Project import generated by Copybara.

GitOrigin-RevId: 2146b10f0a498f665f246e16033b686c7947b92d

MANIFEST.in

@@ -14,3 +14,6 @@ exclude mediapipe/modules/objectron/object_detection_3d_sneakers.tflite
 exclude mediapipe/modules/objectron/object_detection_3d_chair.tflite
 exclude mediapipe/modules/objectron/object_detection_3d_camera.tflite
 exclude mediapipe/modules/objectron/object_detection_3d_cup.tflite
+exclude mediapipe/modules/objectron/object_detection_ssd_mobilenetv2_oidv4_fp16.tflite
+exclude mediapipe/modules/pose_landmark/pose_landmark_lite.tflite
+exclude mediapipe/modules/pose_landmark/pose_landmark_heavy.tflite

docs/framework_concepts/framework_concepts.md

@@ -110,3 +110,12 @@ Other policies are also available, implemented using a separate kind of
 component known as an InputStreamHandler.
 
 See [Synchronization](synchronization.md) for more details.
+
+### Realtime data streams
+
+MediaPipe calculator graphs are often used to process streams of video or audio
+frames for interactive applications. Normally, each Calculator runs as soon as
+all of its input packets for a given timestamp become available. Calculators
+used in realtime graphs need to define output timestamp bounds based on input
+timestamp bounds in order to allow downstream calculators to be scheduled
+promptly. See [Realtime data streams](realtime.md) for details.

docs/framework_concepts/realtime.md

@@ -0,0 +1,187 @@
+---
+layout: default
+title: Processing real-time data streams
+nav_order: 6
+has_children: true
+has_toc: false
+---
+
+# Processing real-time data streams
+{: .no_toc }
+
+1. TOC
+{:toc}
+---
+
+## Realtime timestamps
+
+MediaPipe calculator graphs are often used to process streams of video or audio
+frames for interactive applications. The MediaPipe framework requires only that
+successive packets be assigned monotonically increasing timestamps. By
+convention, realtime calculators and graphs use the recording time or the
+presentation time of each frame as its timestamp, with each timestamp indicating
+the microseconds since `Jan/1/1970:00:00:00`. This allows packets from various
+sources to be processed in a globally consistent sequence.
+
+## Realtime scheduling
+
+Normally, each Calculator runs as soon as all of its input packets for a given
+timestamp become available. Normally, this happens when the calculator has
+finished processing the previous frame, and each of the calculators producing
+its inputs have finished processing the current frame. The MediaPipe scheduler
+invokes each calculator as soon as these conditions are met. See
+[Synchronization](synchronization.md) for more details.
+
+## Timestamp bounds
+
+When a calculator does not produce any output packets for a given timestamp, it
+can instead output a "timestamp bound" indicating that no packet will be
+produced for that timestamp. This indication is necessary to allow downstream
+calculators to run at that timestamp, even though no packet has arrived for
+certain streams for that timestamp. This is especially important for realtime
+graphs in interactive applications, where it is crucial that each calculator
+begin processing as soon as possible.
+
+Consider a graph like the following:
+
+```
+node {
+   calculator: "A"
+   input_stream: "alpha_in"
+   output_stream: "alpha"
+}
+node {
+   calculator: "B"
+   input_stream: "alpha"
+   input_stream: "foo"
+   output_stream: "beta"
+}
+```
+
+Suppose: at timestamp `T`, node `A` doesn't send a packet in its output stream
+`alpha`. Node `B` gets a packet in `foo` at timestamp `T` and is waiting for a
+packet in `alpha` at timestamp `T`. If `A` doesn't send `B` a timestamp bound
+update for `alpha`, `B` will keep waiting for a packet to arrive in `alpha`.
+Meanwhile, the packet queue of `foo` will accumulate packets at `T`, `T+1` and
+so on.
+
+To output a packet on a stream, a calculator uses the API functions
+`CalculatorContext::Outputs` and `OutputStream::Add`. To instead output a
+timestamp bound on a stream, a calculator can use the API functions
+`CalculatorContext::Outputs` and `CalculatorContext::SetNextTimestampBound`. The
+specified bound is the lowest allowable timestamp for the next packet on the
+specified output stream. When no packet is output, a calculator will typically
+do something like:
+
+```
+cc->Outputs().Tag("output_frame").SetNextTimestampBound(
+  cc->InputTimestamp().NextAllowedInStream());
+```
+
+The function `Timestamp::NextAllowedInStream` returns the successive timestamp.
+For example, `Timestamp(1).NextAllowedInStream() == Timestamp(2)`.
+
+## Propagating timestamp bounds
+
+Calculators that will be used in realtime graphs need to define output timestamp
+bounds based on input timestamp bounds in order to allow downstream calculators
+to be scheduled promptly. A common pattern is for calculators to output packets
+with the same timestamps as their input packets. In this case, simply outputting
+a packet on every call to `Calculator::Process` is sufficient to define output
+timestamp bounds.
+
+However, calculators are not required to follow this common pattern for output
+timestamps, they are only required to choose monotonically increasing output
+timestamps. As a result, certain calculators must calculate timestamp bounds
+explicitly. MediaPipe provides several tools for computing appropriate timestamp
+bound for each calculator.
+
+1\. **SetNextTimestampBound()** can be used to specify the timestamp bound, `t +
+1`, for an output stream.
+
+```
+cc->Outputs.Tag("OUT").SetNextTimestampBound(t.NextAllowedInStream());
+```
+
+Alternatively, an empty packet with timestamp `t` can be produced to specify the
+timestamp bound `t + 1`.
+
+```
+cc->Outputs.Tag("OUT").Add(Packet(), t);
+```
+
+The timestamp bound of an input stream is indicated by the packet or the empty
+packet on the input stream.
+
+```
+Timestamp bound = cc->Inputs().Tag("IN").Value().Timestamp();
+```
+
+2\. **TimestampOffset()** can be specified in order to automatically copy the
+timestamp bound from input streams to output streams.
+
+```
+cc->SetTimestampOffset(0);
+```
+
+This setting has the advantage of propagating timestamp bounds automatically,
+even when only timestamp bounds arrive and Calculator::Process is not invoked.
+
+3\. **ProcessTimestampBounds()** can be specified in order to invoke
+`Calculator::Process` for each new "settled timestamp", where the "settled
+timestamp" is the new highest timestamp below the current timestamp bounds.
+Without `ProcessTimestampBounds()`, `Calculator::Process` is invoked only with
+one or more arriving packets.
+
+```
+cc->SetProcessTimestampBounds(true);
+```
+
+This setting allows a calculator to perform its own timestamp bounds calculation
+and propagation, even when only input timestamps are updated. It can be used to
+replicate the effect of `TimestampOffset()`, but it can also be used to
+calculate a timestamp bound that takes into account additional factors.
+
+For example, in order to replicate `SetTimestampOffset(0)`, a calculator could
+do the following:
+
+```
+absl::Status Open(CalculatorContext* cc) {
+  cc->SetProcessTimestampBounds(true);
+}
+
+absl::Status Process(CalculatorContext* cc) {
+  cc->Outputs.Tag("OUT").SetNextTimestampBound(
+      cc->InputTimestamp().NextAllowedInStream());
+}
+```
+
+## Scheduling of Calculator::Open and Calculator::Close
+
+`Calculator::Open` is invoked when all required input side-packets have been
+produced. Input side-packets can be provided by the enclosing application or by
+"side-packet calculators" inside the graph. Side-packets can be specified from
+outside the graph using the API's `CalculatorGraph::Initialize` and
+`CalculatorGraph::StartRun`. Side packets can be specified by calculators within
+the graph using `CalculatorGraphConfig::OutputSidePackets` and
+`OutputSidePacket::Set`.
+
+Calculator::Close is invoked when all of the input streams have become `Done` by
+being closed or reaching timestamp bound `Timestamp::Done`.
+
+**Note:** If the graph finishes all pending calculator execution and becomes
+`Done`, before some streams become `Done`, then MediaPipe will invoke the
+remaining calls to `Calculator::Close`, so that every calculator can produce its
+final outputs.
+
+The use of `TimestampOffset` has some implications for `Calculator::Close`. A
+calculator specifying `SetTimestampOffset(0)` will by design signal that all of
+its output streams have reached `Timestamp::Done` when all of its input streams
+have reached `Timestamp::Done`, and therefore no further outputs are possible.
+This prevents such a calculator from emitting any packets during
+`Calculator::Close`. If a calculator needs to produce a summary packet during
+`Calculator::Close`, `Calculator::Process` must specify timestamp bounds such
+that at least one timestamp (such as `Timestamp::Max`) remains available during
+`Calculator::Close`. This means that such a calculator normally cannot rely upon
+`SetTimestampOffset(0)` and must instead specify timestamp bounds explicitly
+using `SetNextTimestampBounds()`.

docs/solutions/pose.md

@@ -79,19 +79,32 @@ to visualize its associated subgraphs, please see
 ## Pose Estimation Quality
 
 To evaluate the quality of our [models](./models.md#pose) against other
-well-performing publicly available solutions, we use a validation dataset,
+well-performing publicly available solutions, we use three different validation
-consisting of 1k images with diverse Yoga, HIIT, and Dance postures. Each image
+datasets, representing different verticals: Yoga, Dance and HIIT. Each image
 contains only a single person located 2-4 meters from the camera. To be
 consistent with other solutions, we perform evaluation only for 17 keypoints
 from [COCO topology](https://cocodataset.org/#keypoints-2020).
 
-Method                                                                                                | [mAP](https://cocodataset.org/#keypoints-eval) | [PCK@0.2](https://github.com/cbsudux/Human-Pose-Estimation-101) | [FPS](https://en.wikipedia.org/wiki/Frame_rate), Pixel 3 [TFLite GPU](https://www.tensorflow.org/lite/performance/gpu_advanced) | [FPS](https://en.wikipedia.org/wiki/Frame_rate), MacBook Pro (15-inch, 2017)
+Method                                                                                                | Yoga <br/> [`mAP`] | Yoga <br/> [`PCK@0.2`] | Dance <br/> [`mAP`] | Dance <br/> [`PCK@0.2`] | HIIT <br/> [`mAP`] | HIIT <br/> [`PCK@0.2`]
------------------------------------------------------------------------------------------------------ | ---------------------------------------------: | --------------------------------------------------------------: | ------------------------------------------------------------------------------------------------------------------------------: | ---------------------------------------------------------------------------:
+----------------------------------------------------------------------------------------------------- | -----------------: | ---------------------: | ------------------: | ----------------------: | -----------------: | ---------------------:
-BlazePose.Lite                                                                                        | 49.1                                           | 91.7                                                            | 49                                                                                                                              | 40
+BlazePose.Heavy                                                                                       | 68.1               | **96.4**               | 73.0                | **97.2**                | 74.0               | **97.5**
-BlazePose.Full                                                                                        | 64.5                                           | 95.8                                                            | 40                                                                                                                              | 37
+BlazePose.Full                                                                                        | 62.6               | **95.5**               | 67.4                | **96.3**                | 68.0               | **95.7**
-BlazePose.Heavy                                                                                       | 70.9                                           | 97.0                                                            | 19                                                                                                                              | 26
+BlazePose.Lite                                                                                        | 45.0               | **90.2**               | 53.6                | **92.5**                | 53.8               | **93.5**
-[AlphaPose.ResNet50](https://github.com/MVIG-SJTU/AlphaPose)                                          | 57.6                                           | 93.1                                                            | N/A                                                                                                                             | N/A
+[AlphaPose.ResNet50](https://github.com/MVIG-SJTU/AlphaPose)                                          | 63.4               | **96.0**               | 57.8                | **95.5**                | 63.4               | **96.0**
-[Apple Vision](https://developer.apple.com/documentation/vision/detecting_human_body_poses_in_images) | 37.0                                           | 85.3                                                            | N/A                                                                                                                             | N/A
+[Apple.Vision](https://developer.apple.com/documentation/vision/detecting_human_body_poses_in_images) | 32.8               | **82.7**               | 36.4                | **91.4**                | 44.5               | **88.6**
+
+![pose_tracking_pck_chart.png](../images/mobile/pose_tracking_pck_chart.png) |
+:--------------------------------------------------------------------------: |
+*Fig 2. Quality evaluation in [`PCK@0.2`].*                                  |
+
+We designed our models specifically for live perception use cases, so all of
+them work in real-time on the majority of modern devices.
+
+Method          | Latency <br/> Pixel 3 [TFLite GPU](https://www.tensorflow.org/lite/performance/gpu_advanced) | Latency <br/> MacBook Pro (15-inch 2017)
+--------------- | -------------------------------------------------------------------------------------------: | ---------------------------------------:
+BlazePose.Heavy | 53 ms                                                                                        | 38 ms
+BlazePose.Full  | 25 ms                                                                                        | 27 ms
+BlazePose.Lite  | 20 ms                                                                                        | 25 ms
 
 ## Models
 
@@ -109,7 +122,7 @@ hip midpoints.
 
 ![pose_tracking_detector_vitruvian_man.png](../images/mobile/pose_tracking_detector_vitruvian_man.png) |
 :----------------------------------------------------------------------------------------------------: |
-*Fig 2. Vitruvian man aligned via two virtual keypoints predicted by BlazePose detector in addition to the face bounding box.* |
+*Fig 3. Vitruvian man aligned via two virtual keypoints predicted by BlazePose detector in addition to the face bounding box.* |
 
 ### Pose Landmark Model (BlazePose GHUM 3D)
 
@@ -124,7 +137,7 @@ this [paper](https://arxiv.org/abs/2006.10204) and
 
 ![pose_tracking_full_body_landmarks.png](../images/mobile/pose_tracking_full_body_landmarks.png) |
 :----------------------------------------------------------------------------------------------: |
-*Fig 3. 33 pose landmarks.*                                                                      |
+*Fig 4. 33 pose landmarks.*                                                                      |
 
 ## Solution APIs
 
@@ -384,3 +397,6 @@ on how to build MediaPipe examples.
 *   [Models and model cards](./models.md#pose)
 *   [Web demo](https://code.mediapipe.dev/codepen/pose)
 *   [Python Colab](https://mediapipe.page.link/pose_py_colab)
+
+[`mAP`]: https://cocodataset.org/#keypoints-eval
+[`PCK@0.2`]: https\://github.com/cbsudux/Human-Pose-Estimation-101

mediapipe/calculators/core/BUILD

@@ -233,6 +233,22 @@ cc_test(
     ],
 )
 
+cc_library(
+    name = "concatenate_vector_calculator_hdr",
+    hdrs = ["concatenate_vector_calculator.h"],
+    visibility = ["//visibility:public"],
+    deps = [
+        ":concatenate_vector_calculator_cc_proto",
+        "//mediapipe/framework:calculator_framework",
+        "//mediapipe/framework/api2:node",
+        "//mediapipe/framework/api2:port",
+        "//mediapipe/framework/port:integral_types",
+        "//mediapipe/framework/port:ret_check",
+        "//mediapipe/framework/port:status",
+    ],
+    alwayslink = 1,
+)
+
 cc_library(
     name = "concatenate_vector_calculator",
     srcs = ["concatenate_vector_calculator.cc"],

mediapipe/calculators/core/default_side_packet_calculator.cc

@@ -71,7 +71,8 @@ absl::Status DefaultSidePacketCalculator::GetContract(CalculatorContract* cc) {
   if (cc->InputSidePackets().HasTag(kOptionalValueTag)) {
     cc->InputSidePackets()
         .Tag(kOptionalValueTag)
-        .SetSameAs(&cc->InputSidePackets().Tag(kDefaultValueTag));
+        .SetSameAs(&cc->InputSidePackets().Tag(kDefaultValueTag))
+        .Optional();
   }
 
   RET_CHECK(cc->OutputSidePackets().HasTag(kValueTag));

mediapipe/calculators/image/BUILD

@@ -410,7 +410,9 @@ cc_library(
     srcs = ["image_properties_calculator.cc"],
     visibility = ["//visibility:public"],
     deps = [
+        "//mediapipe/framework/api2:node",
         "//mediapipe/framework:calculator_framework",
+        "//mediapipe/framework/formats:image",
         "//mediapipe/framework/formats:image_frame",
         "//mediapipe/framework/port:ret_check",
         "//mediapipe/framework/port:status",

mediapipe/calculators/image/image_properties_calculator.cc

@@ -12,25 +12,32 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include "mediapipe/framework/api2/node.h"
 #include "mediapipe/framework/calculator_framework.h"
+#include "mediapipe/framework/formats/image.h"
 #include "mediapipe/framework/formats/image_frame.h"
 
 #if !MEDIAPIPE_DISABLE_GPU
 #include "mediapipe/gpu/gpu_buffer.h"
 #endif  // !MEDIAPIPE_DISABLE_GPU
 
-namespace {
-constexpr char kImageFrameTag[] = "IMAGE";
-constexpr char kGpuBufferTag[] = "IMAGE_GPU";
-}  // namespace
-
 namespace mediapipe {
+namespace api2 {
+
+#if MEDIAPIPE_DISABLE_GPU
+// Just a placeholder to not have to depend on mediapipe::GpuBuffer.
+using GpuBuffer = AnyType;
+#else
+using GpuBuffer = mediapipe::GpuBuffer;
+#endif  // MEDIAPIPE_DISABLE_GPU
 
 // Extracts image properties from the input image and outputs the properties.
 // Currently only supports image size.
 // Input:
 //   One of the following:
-//   IMAGE: An ImageFrame
+//   IMAGE: An Image or ImageFrame (for backward compatibility with existing
+//          graphs that use IMAGE for ImageFrame input)
+//   IMAGE_CPU: An ImageFrame
 //   IMAGE_GPU: A GpuBuffer
 //
 // Output:
@@ -42,59 +49,64 @@ namespace mediapipe {
 //   input_stream: "IMAGE:image"
 //   output_stream: "SIZE:size"
 // }
-class ImagePropertiesCalculator : public CalculatorBase {
+class ImagePropertiesCalculator : public Node {
  public:
-  static absl::Status GetContract(CalculatorContract* cc) {
+  static constexpr Input<
-    RET_CHECK(cc->Inputs().HasTag(kImageFrameTag) ^
+      OneOf<mediapipe::Image, mediapipe::ImageFrame>>::Optional kIn{"IMAGE"};
-              cc->Inputs().HasTag(kGpuBufferTag));
+  // IMAGE_CPU, dedicated to ImageFrame input, is only needed in some top-level
-    if (cc->Inputs().HasTag(kImageFrameTag)) {
+  // graphs for the Python Solution APIs to figure out the type of input stream
-      cc->Inputs().Tag(kImageFrameTag).Set<ImageFrame>();
+  // without running into ambiguities from IMAGE.
-    }
+  // TODO: Remove IMAGE_CPU once Python Solution APIs adopt Image.
-#if !MEDIAPIPE_DISABLE_GPU
+  static constexpr Input<mediapipe::ImageFrame>::Optional kInCpu{"IMAGE_CPU"};
-    if (cc->Inputs().HasTag(kGpuBufferTag)) {
+  static constexpr Input<GpuBuffer>::Optional kInGpu{"IMAGE_GPU"};
-      cc->Inputs().Tag(kGpuBufferTag).Set<::mediapipe::GpuBuffer>();
+  static constexpr Output<std::pair<int, int>> kOut{"SIZE"};
-    }
-#endif  // !MEDIAPIPE_DISABLE_GPU
 
-    if (cc->Outputs().HasTag("SIZE")) {
+  MEDIAPIPE_NODE_CONTRACT(kIn, kInCpu, kInGpu, kOut);
-      cc->Outputs().Tag("SIZE").Set<std::pair<int, int>>();
-    }
 
-    return absl::OkStatus();
+  static absl::Status UpdateContract(CalculatorContract* cc) {
-  }
+    RET_CHECK_EQ(kIn(cc).IsConnected() + kInCpu(cc).IsConnected() +
+                     kInGpu(cc).IsConnected(),
+                 1)
+        << "One and only one of IMAGE, IMAGE_CPU and IMAGE_GPU input is "
+           "expected.";
 
-  absl::Status Open(CalculatorContext* cc) override {
-    cc->SetOffset(TimestampDiff(0));
     return absl::OkStatus();
   }
 
   absl::Status Process(CalculatorContext* cc) override {
-    int width;
+    std::pair<int, int> size;
-    int height;
 
-    if (cc->Inputs().HasTag(kImageFrameTag) &&
+    if (kIn(cc).IsConnected()) {
-        !cc->Inputs().Tag(kImageFrameTag).IsEmpty()) {
+      kIn(cc).Visit(
-      const auto& image = cc->Inputs().Tag(kImageFrameTag).Get<ImageFrame>();
+          [&size](const mediapipe::Image& value) {
-      width = image.Width();
+            size.first = value.width();
-      height = image.Height();
+            size.second = value.height();
+          },
+          [&size](const mediapipe::ImageFrame& value) {
+            size.first = value.Width();
+            size.second = value.Height();
+          });
+    }
+    if (kInCpu(cc).IsConnected()) {
+      const auto& image = *kInCpu(cc);
+      size.first = image.Width();
+      size.second = image.Height();
     }
 #if !MEDIAPIPE_DISABLE_GPU
-    if (cc->Inputs().HasTag(kGpuBufferTag) &&
+    if (kInGpu(cc).IsConnected()) {
-        !cc->Inputs().Tag(kGpuBufferTag).IsEmpty()) {
+      const auto& image = *kInGpu(cc);
-      const auto& image =
+      size.first = image.width();
-          cc->Inputs().Tag(kGpuBufferTag).Get<mediapipe::GpuBuffer>();
+      size.second = image.height();
-      width = image.width();
-      height = image.height();
     }
 #endif  // !MEDIAPIPE_DISABLE_GPU
 
-    cc->Outputs().Tag("SIZE").AddPacket(
+    kOut(cc).Send(size);
-        MakePacket<std::pair<int, int>>(width, height)
-            .At(cc->InputTimestamp()));
 
     return absl::OkStatus();
   }
 };
-REGISTER_CALCULATOR(ImagePropertiesCalculator);
 
+MEDIAPIPE_REGISTER_NODE(ImagePropertiesCalculator);
+
+}  // namespace api2
 }  // namespace mediapipe

mediapipe/calculators/tensor/BUILD

@@ -585,6 +585,7 @@ cc_library(
         ],
         "//conditions:default": [],
     }),
+    visibility = ["//visibility:public"],
     deps = [
         ":image_to_tensor_utils",
         "//mediapipe/framework/formats:image",

mediapipe/calculators/tensor/image_to_tensor_converter_gl_buffer.cc

@@ -312,7 +312,7 @@ class GlProcessor : public ImageToTensorConverter {
       return absl::OkStatus();
     }));
 
-    return tensor;
+    return std::move(tensor);
   }
 
   ~GlProcessor() override {

mediapipe/calculators/tensor/image_to_tensor_converter_metal.cc

@@ -383,7 +383,7 @@ class MetalProcessor : public ImageToTensorConverter {
           tflite::gpu::HW(output_dims.height, output_dims.width),
           command_buffer, buffer_view.buffer()));
       [command_buffer commit];
-      return tensor;
+      return std::move(tensor);
     }
   }
 

mediapipe/calculators/tensor/image_to_tensor_converter_opencv.cc

@@ -103,7 +103,7 @@ class OpenCvProcessor : public ImageToTensorConverter {
         GetValueRangeTransformation(kInputImageRangeMin, kInputImageRangeMax,
                                     range_min, range_max));
     transformed.convertTo(dst, CV_32FC3, transform.scale, transform.offset);
-    return tensor;
+    return std::move(tensor);
   }
 
  private:

mediapipe/calculators/util/landmarks_smoothing_calculator.cc

@@ -205,11 +205,12 @@ class VelocityFilter : public LandmarksFilter {
 class OneEuroFilterImpl : public LandmarksFilter {
  public:
   OneEuroFilterImpl(double frequency, double min_cutoff, double beta,
-                    double derivate_cutoff)
+                    double derivate_cutoff, float min_allowed_object_scale)
       : frequency_(frequency),
         min_cutoff_(min_cutoff),
         beta_(beta),
-        derivate_cutoff_(derivate_cutoff) {}
+        derivate_cutoff_(derivate_cutoff),
+        min_allowed_object_scale_(min_allowed_object_scale) {}
 
   absl::Status Reset() override {
     x_filters_.clear();
@@ -224,15 +225,25 @@ class OneEuroFilterImpl : public LandmarksFilter {
     // Initialize filters once.
     MP_RETURN_IF_ERROR(InitializeFiltersIfEmpty(in_landmarks.landmark_size()));
 
+    const float object_scale = GetObjectScale(in_landmarks);
+    if (object_scale < min_allowed_object_scale_) {
+      *out_landmarks = in_landmarks;
+      return absl::OkStatus();
+    }
+    const float value_scale = 1.0f / object_scale;
+
     // Filter landmarks. Every axis of every landmark is filtered separately.
     for (int i = 0; i < in_landmarks.landmark_size(); ++i) {
       const auto& in_landmark = in_landmarks.landmark(i);
 
       auto* out_landmark = out_landmarks->add_landmark();
       *out_landmark = in_landmark;
-      out_landmark->set_x(x_filters_[i].Apply(timestamp, in_landmark.x()));
+      out_landmark->set_x(
-      out_landmark->set_y(y_filters_[i].Apply(timestamp, in_landmark.y()));
+          x_filters_[i].Apply(timestamp, value_scale, in_landmark.x()));
-      out_landmark->set_z(z_filters_[i].Apply(timestamp, in_landmark.z()));
+      out_landmark->set_y(
+          y_filters_[i].Apply(timestamp, value_scale, in_landmark.y()));
+      out_landmark->set_z(
+          z_filters_[i].Apply(timestamp, value_scale, in_landmark.z()));
     }
 
     return absl::OkStatus();
@@ -265,6 +276,7 @@ class OneEuroFilterImpl : public LandmarksFilter {
   double min_cutoff_;
   double beta_;
   double derivate_cutoff_;
+  double min_allowed_object_scale_;
 
   std::vector<OneEuroFilter> x_filters_;
   std::vector<OneEuroFilter> y_filters_;
@@ -344,7 +356,8 @@ absl::Status LandmarksSmoothingCalculator::Open(CalculatorContext* cc) {
         options.one_euro_filter().frequency(),
         options.one_euro_filter().min_cutoff(),
         options.one_euro_filter().beta(),
-        options.one_euro_filter().derivate_cutoff());
+        options.one_euro_filter().derivate_cutoff(),
+        options.one_euro_filter().min_allowed_object_scale());
   } else {
     RET_CHECK_FAIL()
         << "Landmarks filter is either not specified or not supported";

mediapipe/calculators/util/landmarks_smoothing_calculator.proto

@@ -50,9 +50,9 @@ message LandmarksSmoothingCalculatorOptions {
   // For the details of the filter implementation and the procedure of its
   // configuration please check http://cristal.univ-lille.fr/~casiez/1euro/
   message OneEuroFilter {
-    // Frequency of incomming frames defined in seconds. Used only if can't be
+    // Frequency of incomming frames defined in frames per seconds. Used only if
-    // calculated from provided events (e.g. on the very first frame).
+    // can't be calculated from provided events (e.g. on the very first frame).
-    optional float frequency = 1 [default = 0.033];
+    optional float frequency = 1 [default = 30.0];
 
     // Minimum cutoff frequency. Start by tuning this parameter while keeping
     // `beta = 0` to reduce jittering to the desired level. 1Hz (the default
@@ -68,6 +68,10 @@ message LandmarksSmoothingCalculatorOptions {
     // algorithm, but can be tuned to further smooth the speed (i.e. derivate)
     // on the object.
     optional float derivate_cutoff = 4 [default = 1.0];
+
+    // If calculated object scale is less than given value smoothing will be
+    // disabled and landmarks will be returned as is.
+    optional float min_allowed_object_scale = 5 [default = 1e-6];
   }
 
   oneof filter_options {

mediapipe/calculators/util/refine_landmarks_from_heatmap_calculator.cc

@@ -77,10 +77,12 @@ class RefineLandmarksFromHeatmapCalculatorImpl
     const auto& options =
         cc->Options<mediapipe::RefineLandmarksFromHeatmapCalculatorOptions>();
 
-    ASSIGN_OR_RETURN(auto out_lms, RefineLandmarksFromHeatMap(
+    ASSIGN_OR_RETURN(
-                                       in_lms, hm_raw, hm_tensor.shape().dims,
+        auto out_lms,
-                                       options.kernel_size(),
+        RefineLandmarksFromHeatMap(
-                                       options.min_confidence_to_refine()));
+            in_lms, hm_raw, hm_tensor.shape().dims, options.kernel_size(),
+            options.min_confidence_to_refine(), options.refine_presence(),
+            options.refine_visibility()));
 
     kOutLandmarks(cc).Send(std::move(out_lms));
     return absl::OkStatus();
@@ -104,7 +106,8 @@ class RefineLandmarksFromHeatmapCalculatorImpl
 absl::StatusOr<mediapipe::NormalizedLandmarkList> RefineLandmarksFromHeatMap(
     const mediapipe::NormalizedLandmarkList& in_lms,
     const float* heatmap_raw_data, const std::vector<int>& heatmap_dims,
-    int kernel_size, float min_confidence_to_refine) {
+    int kernel_size, float min_confidence_to_refine, bool refine_presence,
+    bool refine_visibility) {
   ASSIGN_OR_RETURN(auto hm_dims, GetHwcFromDims(heatmap_dims));
   auto [hm_height, hm_width, hm_channels] = hm_dims;
 
@@ -136,7 +139,7 @@ absl::StatusOr<mediapipe::NormalizedLandmarkList> RefineLandmarksFromHeatMap(
     float sum = 0;
     float weighted_col = 0;
     float weighted_row = 0;
-    float max_value = 0;
+    float max_confidence_value = 0;
 
     // Main loop. Go over kernel and calculate weighted sum of coordinates,
     // sum of weights and max weights.
@@ -150,15 +153,33 @@ absl::StatusOr<mediapipe::NormalizedLandmarkList> RefineLandmarksFromHeatMap(
         // options.
         float confidence = Sigmoid(heatmap_raw_data[idx]);
         sum += confidence;
-        max_value = std::max(max_value, confidence);
+        max_confidence_value = std::max(max_confidence_value, confidence);
         weighted_col += col * confidence;
         weighted_row += row * confidence;
       }
     }
-    if (max_value >= min_confidence_to_refine && sum > 0) {
+    if (max_confidence_value >= min_confidence_to_refine && sum > 0) {
       out_lms.mutable_landmark(lm_index)->set_x(weighted_col / hm_width / sum);
       out_lms.mutable_landmark(lm_index)->set_y(weighted_row / hm_height / sum);
     }
+    if (refine_presence && sum > 0 &&
+        out_lms.landmark(lm_index).has_presence()) {
+      // We assume confidence in heatmaps describes landmark presence.
+      // If landmark is not confident in heatmaps, probably it is not present.
+      const float presence = out_lms.landmark(lm_index).presence();
+      const float new_presence = std::min(presence, max_confidence_value);
+      out_lms.mutable_landmark(lm_index)->set_presence(new_presence);
+    }
+    if (refine_visibility && sum > 0 &&
+        out_lms.landmark(lm_index).has_visibility()) {
+      // We assume confidence in heatmaps describes landmark presence.
+      // As visibility = (not occluded but still present) -> that mean that if
+      // landmark is not present, it is not visible as well.
+      // I.e. visibility confidence cannot be bigger than presence confidence.
+      const float visibility = out_lms.landmark(lm_index).visibility();
+      const float new_visibility = std::min(visibility, max_confidence_value);
+      out_lms.mutable_landmark(lm_index)->set_visibility(new_visibility);
+    }
   }
   return out_lms;
 }

mediapipe/calculators/util/refine_landmarks_from_heatmap_calculator.h

@@ -43,7 +43,8 @@ class RefineLandmarksFromHeatmapCalculator : public NodeIntf {
 absl::StatusOr<mediapipe::NormalizedLandmarkList> RefineLandmarksFromHeatMap(
     const mediapipe::NormalizedLandmarkList& in_lms,
     const float* heatmap_raw_data, const std::vector<int>& heatmap_dims,
-    int kernel_size, float min_confidence_to_refine);
+    int kernel_size, float min_confidence_to_refine, bool refine_presence,
+    bool refine_visibility);
 
 }  // namespace mediapipe
 

mediapipe/calculators/util/refine_landmarks_from_heatmap_calculator.proto

@@ -24,4 +24,6 @@ message RefineLandmarksFromHeatmapCalculatorOptions {
   }
   optional int32 kernel_size = 1 [default = 9];
   optional float min_confidence_to_refine = 2 [default = 0.5];
+  optional bool refine_presence = 3 [default = false];
+  optional bool refine_visibility = 4 [default = false];
 }

mediapipe/calculators/util/refine_landmarks_from_heatmap_calculator_test.cc

@@ -70,8 +70,8 @@ TEST(RefineLandmarksFromHeatmapTest, Smoke) {
     z, z, z};
   // clang-format on
 
-  auto ret_or_error = RefineLandmarksFromHeatMap(vec_to_lms({{0.5, 0.5}}),
+  auto ret_or_error = RefineLandmarksFromHeatMap(
-                                                 hm.data(), {3, 3, 1}, 3, 0.1);
+      vec_to_lms({{0.5, 0.5}}), hm.data(), {3, 3, 1}, 3, 0.1, true, true);
   MP_EXPECT_OK(ret_or_error);
   EXPECT_THAT(lms_to_vec(*ret_or_error),
               ElementsAre(Pair(FloatEq(0), FloatEq(1 / 3.))));
@@ -94,7 +94,7 @@ TEST(RefineLandmarksFromHeatmapTest, MultiLayer) {
 
   auto ret_or_error = RefineLandmarksFromHeatMap(
       vec_to_lms({{0.5, 0.5}, {0.5, 0.5}, {0.5, 0.5}}), hm.data(), {3, 3, 3}, 3,
-      0.1);
+      0.1, true, true);
   MP_EXPECT_OK(ret_or_error);
   EXPECT_THAT(lms_to_vec(*ret_or_error),
               ElementsAre(Pair(FloatEq(0), FloatEq(1 / 3.)),
@@ -119,7 +119,7 @@ TEST(RefineLandmarksFromHeatmapTest, KeepIfNotSure) {
 
   auto ret_or_error = RefineLandmarksFromHeatMap(
       vec_to_lms({{0.5, 0.5}, {0.5, 0.5}, {0.5, 0.5}}), hm.data(), {3, 3, 3}, 3,
-      0.6);
+      0.6, true, true);
   MP_EXPECT_OK(ret_or_error);
   EXPECT_THAT(lms_to_vec(*ret_or_error),
               ElementsAre(Pair(FloatEq(0.5), FloatEq(0.5)),
@@ -140,8 +140,9 @@ TEST(RefineLandmarksFromHeatmapTest, Border) {
     z, z, 0}, 3, 3, 2);
   // clang-format on
 
-  auto ret_or_error = RefineLandmarksFromHeatMap(
+  auto ret_or_error =
-      vec_to_lms({{0.0, 0.0}, {0.9, 0.9}}), hm.data(), {3, 3, 2}, 3, 0.1);
+      RefineLandmarksFromHeatMap(vec_to_lms({{0.0, 0.0}, {0.9, 0.9}}),
+                                 hm.data(), {3, 3, 2}, 3, 0.1, true, true);
   MP_EXPECT_OK(ret_or_error);
   EXPECT_THAT(lms_to_vec(*ret_or_error),
               ElementsAre(Pair(FloatEq(0), FloatEq(1 / 3.)),

mediapipe/framework/BUILD

@@ -1638,6 +1638,8 @@ cc_test(
         ":calculator_contract_test_cc_proto",
         ":calculator_framework",
         ":graph_validation",
+        "//mediapipe/calculators/core:constant_side_packet_calculator",
+        "//mediapipe/calculators/core:default_side_packet_calculator",
         "//mediapipe/calculators/core:pass_through_calculator",
         "//mediapipe/framework:calculator_cc_proto",
         "//mediapipe/framework:packet_generator_cc_proto",

mediapipe/framework/formats/image.h

@@ -236,7 +236,8 @@ inline int Image::channels() const {
 
 inline int Image::step() const {
   if (use_gpu_)
-    return width() * ImageFrame::ByteDepthForFormat(image_format());
+    return width() * channels() *
+           ImageFrame::ByteDepthForFormat(image_format());
   else
     return image_frame_->WidthStep();
 }

mediapipe/framework/graph_validation_test.cc

@@ -499,5 +499,55 @@ TEST(GraphValidationTest, OptionalInputsForGraph) {
   MP_EXPECT_OK(graph_1.WaitUntilDone());
 }
 
+// Shows a calculator graph and DefaultSidePacketCalculator running with and
+// without one optional side packet.
+TEST(GraphValidationTest, DefaultOptionalInputsForGraph) {
+  // A subgraph defining one optional input-side-packet.
+  auto config_1 = ParseTextProtoOrDie<CalculatorGraphConfig>(R"pb(
+    type: "PassThroughGraph"
+    input_side_packet: "side_input_0"
+    output_side_packet: "OUTPUT:output_0"
+    node {
+      calculator: "ConstantSidePacketCalculator"
+      options: {
+        [mediapipe.ConstantSidePacketCalculatorOptions.ext]: {
+          packet { int_value: 2 }
+        }
+      }
+      output_side_packet: "PACKET:int_packet"
+    }
+    node {
+      calculator: "DefaultSidePacketCalculator"
+      input_side_packet: "OPTIONAL_VALUE:side_input_0"
+      input_side_packet: "DEFAULT_VALUE:int_packet"
+      output_side_packet: "VALUE:side_output_0"
+    }
+  )pb");
+  GraphValidation validation_1;
+  MP_EXPECT_OK(validation_1.Validate({config_1}, {}));
+  CalculatorGraph graph_1;
+  MP_EXPECT_OK(graph_1.Initialize({config_1}, {}));
+
+  // Run the graph specifying the optional side packet.
+  std::map<std::string, Packet> side_packets;
+  side_packets.insert({"side_input_0", MakePacket<int>(33)});
+  MP_EXPECT_OK(graph_1.StartRun(side_packets));
+  MP_EXPECT_OK(graph_1.CloseAllPacketSources());
+  MP_EXPECT_OK(graph_1.WaitUntilDone());
+
+  // The specified side packet value is used.
+  auto side_packet_0 = graph_1.GetOutputSidePacket("side_output_0");
+  EXPECT_EQ(side_packet_0->Get<int>(), 33);
+
+  // Run the graph omitting the optional inputs.
+  MP_EXPECT_OK(graph_1.StartRun({}));
+  MP_EXPECT_OK(graph_1.CloseAllPacketSources());
+  MP_EXPECT_OK(graph_1.WaitUntilDone());
+
+  // The default side packet value is used.
+  side_packet_0 = graph_1.GetOutputSidePacket("side_output_0");
+  EXPECT_EQ(side_packet_0->Get<int>(), 2);
+}
+
 }  // namespace
 }  // namespace mediapipe

mediapipe/framework/profiler/graph_profiler.cc

@@ -604,7 +604,6 @@ absl::Status GraphProfiler::CaptureProfile(GraphProfile* result) {
     *result->mutable_calculator_profiles()->Add() = std::move(p);
   }
   this->Reset();
-  AssignNodeNames(result);
   return status;
 }
 

mediapipe/framework/tool/BUILD

@@ -681,6 +681,7 @@ cc_library(
         "//mediapipe/framework/port:logging",
         "//mediapipe/framework/port:ret_check",
         "//mediapipe/framework/port:status",
+        "//mediapipe/framework/tool:switch_container_cc_proto",
         "@com_google_absl//absl/strings",
     ],
     alwayslink = 1,
@@ -705,6 +706,7 @@ cc_library(
         "//mediapipe/framework/port:logging",
         "//mediapipe/framework/port:ret_check",
         "//mediapipe/framework/port:status",
+        "//mediapipe/framework/tool:switch_container_cc_proto",
         "@com_google_absl//absl/strings",
     ],
     alwayslink = 1,

mediapipe/framework/tool/switch_container.cc

@@ -82,6 +82,8 @@ CalculatorGraphConfig::Node* BuildDemuxNode(
     CalculatorGraphConfig* config) {
   CalculatorGraphConfig::Node* result = config->add_node();
   *result->mutable_calculator() = "SwitchDemuxCalculator";
+  *result->mutable_input_stream_handler()->mutable_input_stream_handler() =
+      "ImmediateInputStreamHandler";
   return result;
 }
 
@@ -91,9 +93,42 @@ CalculatorGraphConfig::Node* BuildMuxNode(
     CalculatorGraphConfig* config) {
   CalculatorGraphConfig::Node* result = config->add_node();
   *result->mutable_calculator() = "SwitchMuxCalculator";
+  *result->mutable_input_stream_handler()->mutable_input_stream_handler() =
+      "ImmediateInputStreamHandler";
   return result;
 }
 
+// Copies options from one node to another.
+void CopyOptions(const CalculatorGraphConfig::Node& source,
+                 CalculatorGraphConfig::Node* dest) {
+  if (source.has_options()) {
+    *dest->mutable_options() = source.options();
+  }
+  *dest->mutable_node_options() = source.node_options();
+}
+
+// Clears options that are consumed by the container and not forwarded.
+void ClearContainerOptions(SwitchContainerOptions* result) {
+  result->clear_contained_node();
+}
+
+// Clears options that are consumed by the container and not forwarded.
+void ClearContainerOptions(CalculatorGraphConfig::Node* dest) {
+  if (dest->has_options() &&
+      dest->mutable_options()->HasExtension(SwitchContainerOptions::ext)) {
+    ClearContainerOptions(
+        dest->mutable_options()->MutableExtension(SwitchContainerOptions::ext));
+  }
+  for (google::protobuf::Any& a : *dest->mutable_node_options()) {
+    if (a.Is<SwitchContainerOptions>()) {
+      SwitchContainerOptions extension;
+      a.UnpackTo(&extension);
+      ClearContainerOptions(&extension);
+      a.PackFrom(extension);
+    }
+  }
+}
+
 // Returns an unused name similar to a specified name.
 std::string UniqueName(std::string name, std::set<std::string>* names) {
   CHECK(names != nullptr);
@@ -199,12 +234,16 @@ absl::StatusOr<CalculatorGraphConfig> SwitchContainer::GetConfig(
 
   // Add a graph node for the demux, mux.
   auto demux = BuildDemuxNode(input_tags, &config);
+  CopyOptions(container_node, demux);
+  ClearContainerOptions(demux);
   demux->add_input_stream("SELECT:gate_select");
   demux->add_input_stream("ENABLE:gate_enable");
   demux->add_input_side_packet("SELECT:gate_select");
   demux->add_input_side_packet("ENABLE:gate_enable");
 
   auto mux = BuildMuxNode(output_tags, &config);
+  CopyOptions(container_node, mux);
+  ClearContainerOptions(mux);
   mux->add_input_stream("SELECT:gate_select");
   mux->add_input_stream("ENABLE:gate_enable");
   mux->add_input_side_packet("SELECT:gate_select");

mediapipe/framework/tool/switch_container_test.cc

@@ -225,6 +225,12 @@ TEST(SwitchContainerTest, ApplyToSubnodes) {
           input_stream: "foo"
           output_stream: "C0__:switchcontainer__c0__foo"
           output_stream: "C1__:switchcontainer__c1__foo"
+          options {
+            [mediapipe.SwitchContainerOptions.ext] {}
+          }
+          input_stream_handler {
+            input_stream_handler: "ImmediateInputStreamHandler"
+          }
         }
         node {
           name: "switchcontainer__TripleIntCalculator"
@@ -245,6 +251,12 @@ TEST(SwitchContainerTest, ApplyToSubnodes) {
           input_stream: "C0__:switchcontainer__c0__bar"
           input_stream: "C1__:switchcontainer__c1__bar"
           output_stream: "bar"
+          options {
+            [mediapipe.SwitchContainerOptions.ext] {}
+          }
+          input_stream_handler {
+            input_stream_handler: "ImmediateInputStreamHandler"
+          }
         }
         node {
           calculator: "PassThroughCalculator"
@@ -270,6 +282,75 @@ TEST(SwitchContainerTest, RunsWithSubnodes) {
   RunTestContainer(supergraph);
 }
 
+// Shows the SwitchContainer  does not allow input_stream_handler overwrite.
+TEST(SwitchContainerTest, ValidateInputStreamHandler) {
+  EXPECT_TRUE(SubgraphRegistry::IsRegistered("SwitchContainer"));
+  CalculatorGraph graph;
+  CalculatorGraphConfig supergraph = SideSubnodeContainerExample();
+  *supergraph.mutable_input_stream_handler()->mutable_input_stream_handler() =
+      "DefaultInputStreamHandler";
+  MP_ASSERT_OK(graph.Initialize(supergraph, {}));
+  CalculatorGraphConfig expected_graph = mediapipe::ParseTextProtoOrDie<
+      CalculatorGraphConfig>(R"pb(
+    node {
+      name: "switchcontainer__SwitchDemuxCalculator"
+      calculator: "SwitchDemuxCalculator"
+      input_side_packet: "ENABLE:enable"
+      input_side_packet: "foo"
+      output_side_packet: "C0__:switchcontainer__c0__foo"
+      output_side_packet: "C1__:switchcontainer__c1__foo"
+      options {
+        [mediapipe.SwitchContainerOptions.ext] {}
+      }
+      input_stream_handler {
+        input_stream_handler: "ImmediateInputStreamHandler"
+      }
+    }
+    node {
+      name: "switchcontainer__TripleIntCalculator"
+      calculator: "TripleIntCalculator"
+      input_side_packet: "switchcontainer__c0__foo"
+      output_side_packet: "switchcontainer__c0__bar"
+      input_stream_handler { input_stream_handler: "DefaultInputStreamHandler" }
+    }
+    node {
+      name: "switchcontainer__PassThroughCalculator"
+      calculator: "PassThroughCalculator"
+      input_side_packet: "switchcontainer__c1__foo"
+      output_side_packet: "switchcontainer__c1__bar"
+      input_stream_handler { input_stream_handler: "DefaultInputStreamHandler" }
+    }
+    node {
+      name: "switchcontainer__SwitchMuxCalculator"
+      calculator: "SwitchMuxCalculator"
+      input_side_packet: "ENABLE:enable"
+      input_side_packet: "C0__:switchcontainer__c0__bar"
+      input_side_packet: "C1__:switchcontainer__c1__bar"
+      output_side_packet: "bar"
+      options {
+        [mediapipe.SwitchContainerOptions.ext] {}
+      }
+      input_stream_handler {
+        input_stream_handler: "ImmediateInputStreamHandler"
+      }
+    }
+    node {
+      calculator: "PassThroughCalculator"
+      input_side_packet: "foo"
+      input_side_packet: "bar"
+      output_side_packet: "output_foo"
+      output_side_packet: "output_bar"
+      input_stream_handler { input_stream_handler: "DefaultInputStreamHandler" }
+    }
+    input_stream_handler { input_stream_handler: "DefaultInputStreamHandler" }
+    executor {}
+    input_side_packet: "foo"
+    input_side_packet: "enable"
+    output_side_packet: "output_bar"
+  )pb");
+  EXPECT_THAT(graph.Config(), mediapipe::EqualsProto(expected_graph));
+}
+
 // Shows the SwitchContainer container applied to a pair of simple subnodes.
 TEST(SwitchContainerTest, ApplyToSideSubnodes) {
   EXPECT_TRUE(SubgraphRegistry::IsRegistered("SwitchContainer"));
@@ -286,6 +367,12 @@ TEST(SwitchContainerTest, ApplyToSideSubnodes) {
           input_side_packet: "foo"
           output_side_packet: "C0__:switchcontainer__c0__foo"
           output_side_packet: "C1__:switchcontainer__c1__foo"
+          options {
+            [mediapipe.SwitchContainerOptions.ext] {}
+          }
+          input_stream_handler {
+            input_stream_handler: "ImmediateInputStreamHandler"
+          }
         }
         node {
           name: "switchcontainer__TripleIntCalculator"
@@ -306,6 +393,12 @@ TEST(SwitchContainerTest, ApplyToSideSubnodes) {
           input_side_packet: "C0__:switchcontainer__c0__bar"
           input_side_packet: "C1__:switchcontainer__c1__bar"
           output_side_packet: "bar"
+          options {
+            [mediapipe.SwitchContainerOptions.ext] {}
+          }
+          input_stream_handler {
+            input_stream_handler: "ImmediateInputStreamHandler"
+          }
         }
         node {
           calculator: "PassThroughCalculator"

mediapipe/framework/tool/switch_demux_calculator.cc

@@ -70,17 +70,11 @@ REGISTER_CALCULATOR(SwitchDemuxCalculator);
 
 absl::Status SwitchDemuxCalculator::GetContract(CalculatorContract* cc) {
   // Allow any one of kSelectTag, kEnableTag.
-  if (cc->Inputs().HasTag(kSelectTag)) {
+  cc->Inputs().Tag(kSelectTag).Set<int>().Optional();
-    cc->Inputs().Tag(kSelectTag).Set<int>();
+  cc->Inputs().Tag(kEnableTag).Set<bool>().Optional();
-  } else if (cc->Inputs().HasTag(kEnableTag)) {
-    cc->Inputs().Tag(kEnableTag).Set<bool>();
-  }
   // Allow any one of kSelectTag, kEnableTag.
-  if (cc->InputSidePackets().HasTag(kSelectTag)) {
+  cc->InputSidePackets().Tag(kSelectTag).Set<int>().Optional();
-    cc->InputSidePackets().Tag(kSelectTag).Set<int>();
+  cc->InputSidePackets().Tag(kEnableTag).Set<bool>().Optional();
-  } else if (cc->InputSidePackets().HasTag(kEnableTag)) {
-    cc->InputSidePackets().Tag(kEnableTag).Set<bool>();
-  }
 
   // Set the types for all output channels to corresponding input types.
   std::set<std::string> channel_tags = ChannelTags(cc->Outputs().TagMap());

mediapipe/framework/tool/switch_mux_calculator.cc

@@ -73,17 +73,11 @@ REGISTER_CALCULATOR(SwitchMuxCalculator);
 
 absl::Status SwitchMuxCalculator::GetContract(CalculatorContract* cc) {
   // Allow any one of kSelectTag, kEnableTag.
-  if (cc->Inputs().HasTag(kSelectTag)) {
+  cc->Inputs().Tag(kSelectTag).Set<int>().Optional();
-    cc->Inputs().Tag(kSelectTag).Set<int>();
+  cc->Inputs().Tag(kEnableTag).Set<bool>().Optional();
-  } else if (cc->Inputs().HasTag(kEnableTag)) {
-    cc->Inputs().Tag(kEnableTag).Set<bool>();
-  }
   // Allow any one of kSelectTag, kEnableTag.
-  if (cc->InputSidePackets().HasTag(kSelectTag)) {
+  cc->InputSidePackets().Tag(kSelectTag).Set<int>().Optional();
-    cc->InputSidePackets().Tag(kSelectTag).Set<int>();
+  cc->InputSidePackets().Tag(kEnableTag).Set<bool>().Optional();
-  } else if (cc->InputSidePackets().HasTag(kEnableTag)) {
-    cc->InputSidePackets().Tag(kEnableTag).Set<bool>();
-  }
 
   // Set the types for all input channels to corresponding output types.
   std::set<std::string> channel_tags = ChannelTags(cc->Inputs().TagMap());

mediapipe/graphs/holistic_tracking/BUILD

@@ -44,7 +44,6 @@ cc_library(
     name = "holistic_tracking_gpu_deps",
     deps = [
         ":holistic_tracking_to_render_data",
-        "//mediapipe/calculators/core:constant_side_packet_calculator",
         "//mediapipe/calculators/core:flow_limiter_calculator",
         "//mediapipe/calculators/image:image_properties_calculator",
         "//mediapipe/calculators/util:annotation_overlay_calculator",
@@ -63,7 +62,6 @@ cc_library(
     name = "holistic_tracking_cpu_graph_deps",
     deps = [
         ":holistic_tracking_to_render_data",
-        "//mediapipe/calculators/core:constant_side_packet_calculator",
         "//mediapipe/calculators/core:flow_limiter_calculator",
         "//mediapipe/calculators/image:image_properties_calculator",
         "//mediapipe/calculators/util:annotation_overlay_calculator",

mediapipe/graphs/holistic_tracking/holistic_tracking_cpu.pbtxt

@@ -36,23 +36,9 @@ node {
   }
 }
 
-node {
-  calculator: "ConstantSidePacketCalculator"
-  output_side_packet: "PACKET:0:model_complexity"
-  output_side_packet: "PACKET:1:smooth_landmarks"
-  node_options: {
-    [type.googleapis.com/mediapipe.ConstantSidePacketCalculatorOptions]: {
-      packet { int_value: 1 }
-      packet { bool_value: true }
-    }
-  }
-}
-
 node {
   calculator: "HolisticLandmarkCpu"
   input_stream: "IMAGE:throttled_input_video"
-  input_side_packet: "MODEL_COMPLEXITY:model_complexity"
-  input_side_packet: "SMOOTH_LANDMARKS:smooth_landmarks"
   output_stream: "POSE_LANDMARKS:pose_landmarks"
   output_stream: "POSE_ROI:pose_roi"
   output_stream: "POSE_DETECTION:pose_detection"

mediapipe/graphs/holistic_tracking/holistic_tracking_gpu.pbtxt

@@ -36,23 +36,9 @@ node {
   }
 }
 
-node {
-  calculator: "ConstantSidePacketCalculator"
-  output_side_packet: "PACKET:0:model_complexity"
-  output_side_packet: "PACKET:1:smooth_landmarks"
-  node_options: {
-    [type.googleapis.com/mediapipe.ConstantSidePacketCalculatorOptions]: {
-      packet { int_value: 1 }
-      packet { bool_value: true }
-    }
-  }
-}
-
 node {
   calculator: "HolisticLandmarkGpu"
   input_stream: "IMAGE:throttled_input_video"
-  input_side_packet: "MODEL_COMPLEXITY:model_complexity"
-  input_side_packet: "SMOOTH_LANDMARKS:smooth_landmarks"
   output_stream: "POSE_LANDMARKS:pose_landmarks"
   output_stream: "POSE_ROI:pose_roi"
   output_stream: "POSE_DETECTION:pose_detection"

mediapipe/graphs/pose_tracking/BUILD

@@ -24,10 +24,7 @@ package(default_visibility = ["//visibility:public"])
 cc_library(
     name = "pose_tracking_gpu_deps",
     deps = [
-        "//mediapipe/calculators/core:constant_side_packet_calculator",
         "//mediapipe/calculators/core:flow_limiter_calculator",
-        "//mediapipe/calculators/image:image_properties_calculator",
-        "//mediapipe/calculators/util:landmarks_smoothing_calculator",
         "//mediapipe/graphs/pose_tracking/subgraphs:pose_renderer_gpu",
         "//mediapipe/modules/pose_landmark:pose_landmark_gpu",
     ],
@@ -43,10 +40,7 @@ mediapipe_binary_graph(
 cc_library(
     name = "pose_tracking_cpu_deps",
     deps = [
-        "//mediapipe/calculators/core:constant_side_packet_calculator",
         "//mediapipe/calculators/core:flow_limiter_calculator",
-        "//mediapipe/calculators/image:image_properties_calculator",
-        "//mediapipe/calculators/util:landmarks_smoothing_calculator",
         "//mediapipe/graphs/pose_tracking/subgraphs:pose_renderer_cpu",
         "//mediapipe/modules/pose_landmark:pose_landmark_cpu",
     ],

mediapipe/graphs/pose_tracking/pose_tracking_cpu.pbtxt

@@ -29,54 +29,20 @@ node {
   output_stream: "throttled_input_video"
 }
 
-node {
-  calculator: "ConstantSidePacketCalculator"
-  output_side_packet: "PACKET:model_complexity"
-  node_options: {
-    [type.googleapis.com/mediapipe.ConstantSidePacketCalculatorOptions]: {
-      packet { int_value: 1 }
-    }
-  }
-}
-
 # Subgraph that detects poses and corresponding landmarks.
 node {
   calculator: "PoseLandmarkCpu"
-  input_side_packet: "MODEL_COMPLEXITY:model_complexity"
   input_stream: "IMAGE:throttled_input_video"
   output_stream: "LANDMARKS:pose_landmarks"
   output_stream: "DETECTION:pose_detection"
   output_stream: "ROI_FROM_LANDMARKS:roi_from_landmarks"
 }
 
-# Calculates size of the image.
-node {
-  calculator: "ImagePropertiesCalculator"
-  input_stream: "IMAGE:throttled_input_video"
-  output_stream: "SIZE:image_size"
-}
-
-# Smoothes pose landmarks in order to reduce jitter.
-node {
-  calculator: "LandmarksSmoothingCalculator"
-  input_stream: "NORM_LANDMARKS:pose_landmarks"
-  input_stream: "IMAGE_SIZE:image_size"
-  output_stream: "NORM_FILTERED_LANDMARKS:pose_landmarks_smoothed"
-  node_options: {
-    [type.googleapis.com/mediapipe.LandmarksSmoothingCalculatorOptions] {
-      velocity_filter: {
-        window_size: 5
-        velocity_scale: 10.0
-      }
-    }
-  }
-}
-
 # Subgraph that renders pose-landmark annotation onto the input image.
 node {
   calculator: "PoseRendererCpu"
   input_stream: "IMAGE:throttled_input_video"
-  input_stream: "LANDMARKS:pose_landmarks_smoothed"
+  input_stream: "LANDMARKS:pose_landmarks"
   input_stream: "ROI:roi_from_landmarks"
   input_stream: "DETECTION:pose_detection"
   output_stream: "IMAGE:output_video"

mediapipe/graphs/pose_tracking/pose_tracking_gpu.pbtxt

@@ -29,54 +29,20 @@ node {
   output_stream: "throttled_input_video"
 }
 
-node {
-  calculator: "ConstantSidePacketCalculator"
-  output_side_packet: "PACKET:model_complexity"
-  node_options: {
-    [type.googleapis.com/mediapipe.ConstantSidePacketCalculatorOptions]: {
-      packet { int_value: 1 }
-    }
-  }
-}
-
 # Subgraph that detects poses and corresponding landmarks.
 node {
   calculator: "PoseLandmarkGpu"
-  input_side_packet: "MODEL_COMPLEXITY:model_complexity"
   input_stream: "IMAGE:throttled_input_video"
   output_stream: "LANDMARKS:pose_landmarks"
   output_stream: "DETECTION:pose_detection"
   output_stream: "ROI_FROM_LANDMARKS:roi_from_landmarks"
 }
 
-# Calculates size of the image.
-node {
-  calculator: "ImagePropertiesCalculator"
-  input_stream: "IMAGE_GPU:throttled_input_video"
-  output_stream: "SIZE:image_size"
-}
-
-# Smoothes pose landmarks in order to reduce jitter.
-node {
-  calculator: "LandmarksSmoothingCalculator"
-  input_stream: "NORM_LANDMARKS:pose_landmarks"
-  input_stream: "IMAGE_SIZE:image_size"
-  output_stream: "NORM_FILTERED_LANDMARKS:pose_landmarks_smoothed"
-  node_options: {
-    [type.googleapis.com/mediapipe.LandmarksSmoothingCalculatorOptions] {
-      velocity_filter: {
-        window_size: 5
-        velocity_scale: 10.0
-      }
-    }
-  }
-}
-
 # Subgraph that renders pose-landmark annotation onto the input image.
 node {
   calculator: "PoseRendererGpu"
   input_stream: "IMAGE:throttled_input_video"
-  input_stream: "LANDMARKS:pose_landmarks_smoothed"
+  input_stream: "LANDMARKS:pose_landmarks"
   input_stream: "ROI:roi_from_landmarks"
   input_stream: "DETECTION:pose_detection"
   output_stream: "IMAGE:output_video"

mediapipe/modules/hand_landmark/hand_landmark_tracking_cpu.pbtxt

@@ -154,7 +154,7 @@ node {
 # Extracts image size.
 node {
   calculator: "ImagePropertiesCalculator"
-  input_stream: "IMAGE:image"
+  input_stream: "IMAGE_CPU:image"
   output_stream: "SIZE:image_size"
 }
 

mediapipe/modules/holistic_landmark/holistic_landmark_cpu.pbtxt

@@ -52,7 +52,7 @@ input_stream: "IMAGE:image"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # Whether to filter landmarks across different input images to reduce jitter.

mediapipe/modules/holistic_landmark/holistic_landmark_gpu.pbtxt

@@ -52,7 +52,7 @@ input_stream: "IMAGE:image"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # Whether to filter landmarks across different input images to reduce jitter.

mediapipe/modules/objectron/objectron_cpu.pbtxt

@@ -113,7 +113,7 @@ node {
 # Extracts image size from the input images.
 node {
   calculator: "ImagePropertiesCalculator"
-  input_stream: "IMAGE:image"
+  input_stream: "IMAGE_CPU:image"
   output_stream: "SIZE:image_size"
 }
 

mediapipe/modules/pose_landmark/pose_landmark_by_roi_cpu.pbtxt

@@ -28,7 +28,7 @@ input_stream: "ROI:roi"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # Pose landmarks within the given ROI. (NormalizedLandmarkList)

mediapipe/modules/pose_landmark/pose_landmark_by_roi_gpu.pbtxt

@@ -28,7 +28,7 @@ input_stream: "ROI:roi"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # Pose landmarks within the given ROI. (NormalizedLandmarkList)

mediapipe/modules/pose_landmark/pose_landmark_cpu.pbtxt

@@ -29,12 +29,12 @@ type: "PoseLandmarkCpu"
 input_stream: "IMAGE:image"
 
 # Whether to filter landmarks across different input images to reduce jitter.
-# If unspecified, functions as set to false. (bool)
+# If unspecified, functions as set to true. (bool)
 input_side_packet: "SMOOTH_LANDMARKS:smooth_landmarks"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # Pose landmarks within the given ROI. (NormalizedLandmarkList)
@@ -117,7 +117,7 @@ node: {
 # Calculates size of the image.
 node {
   calculator: "ImagePropertiesCalculator"
-  input_stream: "IMAGE:image"
+  input_stream: "IMAGE_CPU:image"
   output_stream: "SIZE:image_size"
 }
 

mediapipe/modules/pose_landmark/pose_landmark_filtering.pbtxt

@@ -14,7 +14,7 @@
 
 type: "PoseLandmarkFiltering"
 
-# Whether to enable filtering. If unspecified, functions as not enabled. (bool)
+# Whether to enable filtering. If unspecified, functions as enabled. (bool)
 input_side_packet: "ENABLE:enable"
 
 # Size of the image (width & height) where the landmarks are estimated from.
@@ -37,6 +37,7 @@ node {
   output_stream: "NORM_FILTERED_LANDMARKS:filtered_visibility"
   options: {
     [mediapipe.SwitchContainerOptions.ext] {
+      enable: true
       contained_node: {
         calculator: "VisibilitySmoothingCalculator"
         options: {
@@ -68,6 +69,7 @@ node {
   output_stream: "NORM_FILTERED_LANDMARKS:filtered_landmarks"
   options: {
     [mediapipe.SwitchContainerOptions.ext] {
+      enable: true
       contained_node: {
         calculator: "LandmarksSmoothingCalculator"
         options: {
@@ -80,9 +82,16 @@ node {
         calculator: "LandmarksSmoothingCalculator"
         options: {
           [mediapipe.LandmarksSmoothingCalculatorOptions.ext] {
-            velocity_filter: {
+            one_euro_filter {
-              window_size: 5
+              # Min cutoff 0.1 results into ~ 0.02 alpha in landmark EMA filter
-              velocity_scale: 10.0
+              # when landmark is static.
+              min_cutoff: 0.1
+              # Beta 40.0 in combintation with min_cutoff 0.1 results into ~0.8
+              # alpha in landmark EMA filter when landmark is moving fast.
+              beta: 40.0
+              # Derivative cutoff 1.0 results into ~0.17 alpha in landmark
+              # velocity EMA filter.
+              derivate_cutoff: 1.0
             }
           }
         }
@@ -93,22 +102,9 @@ node {
 
 # Smoothes pose landmark visibilities to reduce jitter.
 node {
-  calculator: "SwitchContainer"
+  calculator: "VisibilitySmoothingCalculator"
-  input_side_packet: "ENABLE:enable"
   input_stream: "NORM_LANDMARKS:aux_landmarks"
   output_stream: "NORM_FILTERED_LANDMARKS:filtered_aux_visibility"
-  options: {
-    [mediapipe.SwitchContainerOptions.ext] {
-      contained_node: {
-        calculator: "VisibilitySmoothingCalculator"
-        options: {
-          [mediapipe.VisibilitySmoothingCalculatorOptions.ext] {
-            no_filter: {}
-          }
-        }
-      }
-      contained_node: {
-        calculator: "VisibilitySmoothingCalculator"
   options: {
     [mediapipe.VisibilitySmoothingCalculatorOptions.ext] {
       low_pass_filter {
@@ -117,37 +113,29 @@ node {
     }
   }
 }
-    }
-  }
-}
 
 # Smoothes auxiliary landmarks to reduce jitter.
 node {
-  calculator: "SwitchContainer"
+  calculator: "LandmarksSmoothingCalculator"
-  input_side_packet: "ENABLE:enable"
   input_stream: "NORM_LANDMARKS:filtered_aux_visibility"
   input_stream: "IMAGE_SIZE:image_size"
   output_stream: "NORM_FILTERED_LANDMARKS:filtered_aux_landmarks"
-  options: {
-    [mediapipe.SwitchContainerOptions.ext] {
-      contained_node: {
-        calculator: "LandmarksSmoothingCalculator"
   options: {
     [mediapipe.LandmarksSmoothingCalculatorOptions.ext] {
-            no_filter: {}
+      # Auxiliary landmarks are smoothed heavier than main landmarks to
-          }
+      # make ROI crop for pose landmarks prediction very stable when
-        }
+      # object is not moving but responsive enough in case of sudden
-      }
+      # movements.
-      contained_node: {
+      one_euro_filter {
-        calculator: "LandmarksSmoothingCalculator"
+        # Min cutoff 0.01 results into ~ 0.002 alpha in landmark EMA
-        options: {
+        # filter when landmark is static.
-          [mediapipe.LandmarksSmoothingCalculatorOptions.ext] {
+        min_cutoff: 0.01
-            velocity_filter: {
+        # Beta 1.0 in combintation with min_cutoff 0.01 results into ~0.2
-              window_size: 5
+        # alpha in landmark EMA filter when landmark is moving fast.
-              velocity_scale: 10.0
+        beta: 1.0
-            }
+        # Derivative cutoff 1.0 results into ~0.17 alpha in landmark
-          }
+        # velocity EMA filter.
-        }
+        derivate_cutoff: 1.0
       }
     }
   }

mediapipe/modules/pose_landmark/pose_landmark_gpu.pbtxt

@@ -29,12 +29,12 @@ type: "PoseLandmarkGpu"
 input_stream: "IMAGE:image"
 
 # Whether to filter landmarks across different input images to reduce jitter.
-# If unspecified, functions as set to false. (bool)
+# If unspecified, functions as set to true. (bool)
 input_side_packet: "SMOOTH_LANDMARKS:smooth_landmarks"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # Pose landmarks within the given ROI. (NormalizedLandmarkList)

mediapipe/modules/pose_landmark/pose_landmark_model_loader.pbtxt

@@ -4,7 +4,7 @@ type: "PoseLandmarkModelLoader"
 
 # Complexity of the pose landmark model: 0, 1 or 2. Landmark accuracy as well as
 # inference latency generally go up with the model complexity. If unspecified,
-# functions as set to 0. (int)
+# functions as set to 1. (int)
 input_side_packet: "MODEL_COMPLEXITY:model_complexity"
 
 # TF Lite model represented as a FlatBuffer.
@@ -18,6 +18,7 @@ node {
   output_side_packet: "PACKET:model_path"
   options: {
     [mediapipe.SwitchContainerOptions.ext] {
+      select: 1
       contained_node: {
         calculator: "ConstantSidePacketCalculator"
         options: {

mediapipe/python/solutions/download_utils.py

@@ -0,0 +1,37 @@
+# Copyright 2021 The MediaPipe Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""MediaPipe Downloading utils."""
+
+import os
+import shutil
+import urllib.request
+
+_OSS_URL_PREFIX = 'https://github.com/google/mediapipe/raw/master/'
+
+
+def download_oss_model(model_path: str):
+  """Downloads the oss model from the MediaPipe GitHub repo if it doesn't exist in the package."""
+
+  mp_root_path = os.sep.join(os.path.abspath(__file__).split(os.sep)[:-4])
+  model_abspath = os.path.join(mp_root_path, model_path)
+  if os.path.exists(model_abspath):
+    return
+  model_url = _OSS_URL_PREFIX + model_path
+  print('Downloading model to ' + model_abspath)
+  with urllib.request.urlopen(model_url) as response, open(model_abspath,
+                                                           'wb') as out_file:
+    if response.code != 200:
+      raise ConnectionError('Cannot download ' + model_path +
+                            ' from the MediaPipe Github repo.')
+    shutil.copyfileobj(response, out_file)

mediapipe/python/solutions/hands.py

@@ -44,7 +44,7 @@ class HandLandmark(enum.IntEnum):
   WRIST = 0
   THUMB_CMC = 1
   THUMB_MCP = 2
-  THUMB_DIP = 3
+  THUMB_IP = 3
   THUMB_TIP = 4
   INDEX_FINGER_MCP = 5
   INDEX_FINGER_PIP = 6
@@ -68,8 +68,8 @@ BINARYPB_FILE_PATH = 'mediapipe/modules/hand_landmark/hand_landmark_tracking_cpu
 HAND_CONNECTIONS = frozenset([
     (HandLandmark.WRIST, HandLandmark.THUMB_CMC),
     (HandLandmark.THUMB_CMC, HandLandmark.THUMB_MCP),
-    (HandLandmark.THUMB_MCP, HandLandmark.THUMB_DIP),
+    (HandLandmark.THUMB_MCP, HandLandmark.THUMB_IP),
-    (HandLandmark.THUMB_DIP, HandLandmark.THUMB_TIP),
+    (HandLandmark.THUMB_IP, HandLandmark.THUMB_TIP),
     (HandLandmark.WRIST, HandLandmark.INDEX_FINGER_MCP),
     (HandLandmark.INDEX_FINGER_MCP, HandLandmark.INDEX_FINGER_PIP),
     (HandLandmark.INDEX_FINGER_PIP, HandLandmark.INDEX_FINGER_DIP),

mediapipe/python/solutions/holistic.py

@@ -1,4 +1,4 @@
-# Copyright 2020 The MediaPipe Authors.
+# Copyright 2020-2021 The MediaPipe Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,6 +18,8 @@ from typing import NamedTuple
 import numpy as np
 
 from mediapipe.calculators.core import constant_side_packet_calculator_pb2
+# The following imports are needed because python pb2 silently discards
+# unknown protobuf fields.
 # pylint: disable=unused-import
 from mediapipe.calculators.core import gate_calculator_pb2
 from mediapipe.calculators.core import split_vector_calculator_pb2
@@ -32,9 +34,12 @@ from mediapipe.calculators.util import landmark_projection_calculator_pb2
 from mediapipe.calculators.util import local_file_contents_calculator_pb2
 from mediapipe.calculators.util import non_max_suppression_calculator_pb2
 from mediapipe.calculators.util import rect_transformation_calculator_pb2
+from mediapipe.framework.tool import switch_container_pb2
 from mediapipe.modules.holistic_landmark.calculators import roi_tracking_calculator_pb2
 # pylint: enable=unused-import
+
 from mediapipe.python.solution_base import SolutionBase
+from mediapipe.python.solutions import download_utils
 # pylint: disable=unused-import
 from mediapipe.python.solutions.face_mesh import FACE_CONNECTIONS
 from mediapipe.python.solutions.hands import HAND_CONNECTIONS
@@ -46,6 +51,17 @@ from mediapipe.python.solutions.pose import PoseLandmark
 BINARYPB_FILE_PATH = 'mediapipe/modules/holistic_landmark/holistic_landmark_cpu.binarypb'
 
 
+def _download_oss_pose_landmark_model(model_complexity):
+  """Downloads the pose landmark lite/heavy model from the MediaPipe Github repo if it doesn't exist in the package."""
+
+  if model_complexity == 0:
+    download_utils.download_oss_model(
+        'mediapipe/modules/pose_landmark/pose_landmark_lite.tflite')
+  elif model_complexity == 2:
+    download_utils.download_oss_model(
+        'mediapipe/modules/pose_landmark/pose_landmark_heavy.tflite')
+
+
 class Holistic(SolutionBase):
   """MediaPipe Holistic.
 
@@ -81,6 +97,7 @@ class Holistic(SolutionBase):
         pose landmarks to be considered tracked successfully. See details in
         https://solutions.mediapipe.dev/holistic#min_tracking_confidence.
     """
+    _download_oss_pose_landmark_model(model_complexity)
     super().__init__(
         binary_graph_path=BINARYPB_FILE_PATH,
         side_inputs={

mediapipe/python/solutions/objectron.py

@@ -1,4 +1,4 @@
-# Copyright 2020 The MediaPipe Authors.
+# Copyright 2020-2021 The MediaPipe Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,10 +15,7 @@
 """MediaPipe Objectron."""
 
 import enum
-import os
-import shutil
 from typing import List, Tuple, NamedTuple, Optional
-import urllib.request
 
 import attr
 import numpy as np
@@ -48,6 +45,7 @@ from mediapipe.modules.objectron.calculators import frame_annotation_to_rect_cal
 from mediapipe.modules.objectron.calculators import lift_2d_frame_annotation_to_3d_calculator_pb2
 # pylint: enable=unused-import
 from mediapipe.python.solution_base import SolutionBase
+from mediapipe.python.solutions import download_utils
 
 
 class BoxLandmark(enum.IntEnum):
@@ -92,23 +90,6 @@ BOX_CONNECTIONS = frozenset([
     (BoxLandmark.FRONT_BOTTOM_RIGHT, BoxLandmark.FRONT_TOP_RIGHT),
     (BoxLandmark.BACK_TOP_RIGHT, BoxLandmark.FRONT_TOP_RIGHT),
 ])
-_OSS_URL_PREFIX = 'https://github.com/google/mediapipe/raw/master/'
-
-
-def _download_oss_model(model_path: str):
-  """Download the objectron oss model from GitHub if it doesn't exist in the package."""
-
-  mp_root_path = os.sep.join(os.path.abspath(__file__).split(os.sep)[:-4])
-  model_abspath = os.path.join(mp_root_path, model_path)
-  if os.path.exists(model_abspath):
-    return
-  model_url = _OSS_URL_PREFIX + model_path
-  with urllib.request.urlopen(model_url) as response, open(model_abspath,
-                                                           'wb') as out_file:
-    if response.code != 200:
-      raise ConnectionError('Cannot download ' + model_path +
-                            ' from the MediaPipe Github repo.')
-    shutil.copyfileobj(response, out_file)
 
 
 @attr.s(auto_attribs=True)
@@ -152,10 +133,19 @@ _MODEL_DICT = {
 }
 
 
+def _download_oss_objectron_models(objectron_model: str):
+  """Downloads the objectron models from the MediaPipe Github repo if they don't exist in the package."""
+
+  download_utils.download_oss_model(
+      'mediapipe/modules/objectron/object_detection_ssd_mobilenetv2_oidv4_fp16.tflite'
+  )
+  download_utils.download_oss_model(objectron_model)
+
+
 def get_model_by_name(name: str) -> ObjectronModel:
   if name not in _MODEL_DICT:
     raise ValueError(f'{name} is not a valid model name for Objectron.')
-  _download_oss_model(_MODEL_DICT[name].model_path)
+  _download_oss_objectron_models(_MODEL_DICT[name].model_path)
   return _MODEL_DICT[name]
 
 

mediapipe/python/solutions/pose.py

@@ -1,4 +1,4 @@
-# Copyright 2020 The MediaPipe Authors.
+# Copyright 2020-2021 The MediaPipe Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,6 +20,8 @@ from typing import NamedTuple
 import numpy as np
 
 from mediapipe.calculators.core import constant_side_packet_calculator_pb2
+# The following imports are needed because python pb2 silently discards
+# unknown protobuf fields.
 # pylint: disable=unused-import
 from mediapipe.calculators.core import gate_calculator_pb2
 from mediapipe.calculators.core import split_vector_calculator_pb2
@@ -37,8 +39,11 @@ from mediapipe.calculators.util import non_max_suppression_calculator_pb2
 from mediapipe.calculators.util import rect_transformation_calculator_pb2
 from mediapipe.calculators.util import thresholding_calculator_pb2
 from mediapipe.calculators.util import visibility_smoothing_calculator_pb2
+from mediapipe.framework.tool import switch_container_pb2
 # pylint: enable=unused-import
+
 from mediapipe.python.solution_base import SolutionBase
+from mediapipe.python.solutions import download_utils
 
 
 class PoseLandmark(enum.IntEnum):
@@ -117,6 +122,17 @@ POSE_CONNECTIONS = frozenset([
 ])
 
 
+def _download_oss_pose_landmark_model(model_complexity):
+  """Downloads the pose landmark lite/heavy model from the MediaPipe Github repo if it doesn't exist in the package."""
+
+  if model_complexity == 0:
+    download_utils.download_oss_model(
+        'mediapipe/modules/pose_landmark/pose_landmark_lite.tflite')
+  elif model_complexity == 2:
+    download_utils.download_oss_model(
+        'mediapipe/modules/pose_landmark/pose_landmark_heavy.tflite')
+
+
 class Pose(SolutionBase):
   """MediaPipe Pose.
 
@@ -151,6 +167,7 @@ class Pose(SolutionBase):
         pose landmarks to be considered tracked successfully. See details in
         https://solutions.mediapipe.dev/pose#min_tracking_confidence.
     """
+    _download_oss_pose_landmark_model(model_complexity)
     super().__init__(
         binary_graph_path=BINARYPB_FILE_PATH,
         side_inputs={

mediapipe/util/filtering/one_euro_filter.cc

@@ -21,7 +21,8 @@ OneEuroFilter::OneEuroFilter(double frequency, double min_cutoff, double beta,
   last_time_ = 0;
 }
 
-double OneEuroFilter::Apply(absl::Duration timestamp, double value) {
+double OneEuroFilter::Apply(absl::Duration timestamp, double value_scale,
+                            double value) {
   int64_t new_timestamp = absl::ToInt64Nanoseconds(timestamp);
   if (last_time_ >= new_timestamp) {
     // Results are unpredictable in this case, so nothing to do but
@@ -39,7 +40,7 @@ double OneEuroFilter::Apply(absl::Duration timestamp, double value) {
 
   // estimate the current variation per second
   double dvalue = x_->HasLastRawValue()
-                      ? (value - x_->LastRawValue()) * frequency_
+                      ? (value - x_->LastRawValue()) * value_scale * frequency_
                       : 0.0;  // FIXME: 0.0 or value?
   double edvalue = dx_->ApplyWithAlpha(dvalue, GetAlpha(derivate_cutoff_));
   // use it to update the cutoff frequency

mediapipe/util/filtering/one_euro_filter.h

@@ -13,7 +13,7 @@ class OneEuroFilter {
   OneEuroFilter(double frequency, double min_cutoff, double beta,
                 double derivate_cutoff);
 
-  double Apply(absl::Duration timestamp, double value);
+  double Apply(absl::Duration timestamp, double value_scale, double value);
 
  private:
   double GetAlpha(double cutoff);

setup.py

@@ -1,4 +1,4 @@
-"""Copyright 2020 The MediaPipe Authors.
+"""Copyright 2020-2021 The MediaPipe Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -436,9 +436,9 @@ setuptools.setup(
         'Operating System :: MacOS :: MacOS X',
         'Operating System :: Microsoft :: Windows',
         'Operating System :: POSIX :: Linux',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3 :: Only',
         'Topic :: Scientific/Engineering',
         'Topic :: Scientific/Engineering :: Artificial Intelligence',