Removed MatrixData dataclass and used NumPy to represent Matrix

mediapipe/tasks/python/components/containers/BUILD

@@ -82,15 +82,6 @@ py_library(
     ],
 )
 
-py_library(
-    name = "matrix_data",
-    srcs = ["matrix_data.py"],
-    deps = [
-        "//mediapipe/framework/formats:matrix_data_py_pb2",
-        "//mediapipe/tasks/python/core:optional_dependencies",
-    ],
-)
-
 py_library(
     name = "detections",
     srcs = ["detections.py"],

mediapipe/tasks/python/components/containers/matrix_data.py

@@ -1,81 +0,0 @@
-# Copyright 2022 The MediaPipe Authors. All Rights Reserved.
-#
-# 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.
-"""Matrix data data class."""
-
-import dataclasses
-import enum
-from typing import Any, Optional
-
-import numpy as np
-from mediapipe.framework.formats import matrix_data_pb2
-from mediapipe.tasks.python.core.optional_dependencies import doc_controls
-
-_MatrixDataProto = matrix_data_pb2.MatrixData
-
-
-class Layout(enum.Enum):
-  COLUMN_MAJOR = 0
-  ROW_MAJOR = 1
-
-
-@dataclasses.dataclass
-class MatrixData:
-  """This stores the Matrix data.
-
-  Here the data is stored in column-major order by default.
-
-  Attributes:
-    rows: The number of rows in the matrix.
-    cols: The number of columns in the matrix.
-    data: The data stored in the matrix as a NumPy array.
-    layout: The order in which the data are stored. Defaults to COLUMN_MAJOR.
-  """
-
-  rows: int = None
-  cols: int = None
-  data: np.ndarray = None
-  layout: Optional[Layout] = Layout.COLUMN_MAJOR
-
-  @doc_controls.do_not_generate_docs
-  def to_pb2(self) -> _MatrixDataProto:
-    """Generates a MatrixData protobuf object."""
-    return _MatrixDataProto(
-        rows=self.rows,
-        cols=self.cols,
-        packed_data=self.data,
-        layout=self.layout.value)
-
-  @classmethod
-  @doc_controls.do_not_generate_docs
-  def create_from_pb2(cls, pb2_obj: _MatrixDataProto) -> 'MatrixData':
-    """Creates a `MatrixData` object from the given protobuf object."""
-    return MatrixData(
-        rows=pb2_obj.rows,
-        cols=pb2_obj.cols,
-        data=np.array(pb2_obj.packed_data),
-        layout=Layout(pb2_obj.layout))
-
-  def __eq__(self, other: Any) -> bool:
-    """Checks if this object is equal to the given object.
-
-    Args:
-      other: The object to be compared with.
-
-    Returns:
-      True if the objects are equal.
-    """
-    if not isinstance(other, MatrixData):
-      return False
-
-    return self.to_pb2().__eq__(other.to_pb2())

mediapipe/tasks/python/test/vision/BUILD

@@ -153,7 +153,6 @@ py_test(
         "//mediapipe/tasks/python/components/containers:category",
         "//mediapipe/tasks/python/components/containers:landmark",
         "//mediapipe/tasks/python/components/containers:rect",
-        "//mediapipe/tasks/python/components/containers:matrix_data",
         "//mediapipe/tasks/python/core:base_options",
         "//mediapipe/tasks/python/test:test_utils",
         "//mediapipe/tasks/python/vision:face_landmarker",

mediapipe/tasks/python/test/vision/face_landmarker_test.py

@@ -26,7 +26,6 @@ from mediapipe.framework.formats import classification_pb2
 from mediapipe.python._framework_bindings import image as image_module
 from mediapipe.tasks.python.components.containers import category as category_module
 from mediapipe.tasks.python.components.containers import landmark as landmark_module
-from mediapipe.tasks.python.components.containers import matrix_data as matrix_data_module
 from mediapipe.tasks.python.components.containers import rect as rect_module
 from mediapipe.tasks.python.core import base_options as base_options_module
 from mediapipe.tasks.python.test import test_utils
@@ -39,7 +38,6 @@ _BaseOptions = base_options_module.BaseOptions
 _Category = category_module.Category
 _Rect = rect_module.Rect
 _Landmark = landmark_module.Landmark
-_MatrixData = matrix_data_module.MatrixData
 _NormalizedLandmark = landmark_module.NormalizedLandmark
 _Image = image_module.Image
 _FaceLandmarker = face_landmarker.FaceLandmarker
@@ -90,14 +88,12 @@ def _get_expected_face_blendshapes(file_path: str):
 
 
 def _make_expected_facial_transformation_matrixes():
-  data = np.array([[0.9995292, -0.005092691, 0.030254554, -0.37340546],
+  matrix = np.array([[0.9995292, -0.005092691, 0.030254554, -0.37340546],
                    [0.0072318087, 0.99744856, -0.07102106, 22.212194],
                    [-0.029815676, 0.07120642, 0.9970159, -64.76358],
                    [0, 0, 0, 1]])
-  rows, cols = len(data), len(data[0])
   facial_transformation_matrixes_results = []
-  facial_transformation_matrix = _MatrixData(rows, cols, data.flatten())
+  facial_transformation_matrixes_results.append(matrix)
-  facial_transformation_matrixes_results.append(facial_transformation_matrix)
   return facial_transformation_matrixes_results
 
 
@@ -145,11 +141,13 @@ class FaceLandmarkerTest(parameterized.TestCase):
     self.assertLen(actual_matrix_list, len(expected_matrix_list))
 
     for i, rename_me in enumerate(actual_matrix_list):
-      self.assertEqual(rename_me.rows, expected_matrix_list[i].rows)
+      self.assertEqual(rename_me.shape[0],
-      self.assertEqual(rename_me.cols, expected_matrix_list[i].cols)
+                       expected_matrix_list[i].shape[0])
+      self.assertEqual(rename_me.shape[1],
+                       expected_matrix_list[i].shape[1])
       self.assertAlmostEqual(
-        rename_me.data.all(),
+        rename_me.all(),
-        expected_matrix_list[i].data.all(),
+        expected_matrix_list[i].all(),
         delta=_FACIAL_TRANSFORMATION_MATRIX_DIFF_MARGIN)
 
   def test_create_from_file_succeeds_with_valid_model_path(self):

mediapipe/tasks/python/vision/BUILD

@@ -189,7 +189,6 @@ py_library(
         "//mediapipe/tasks/cc/vision/face_geometry/proto:face_geometry_py_pb2",
         "//mediapipe/tasks/python/components/containers:category",
         "//mediapipe/tasks/python/components/containers:landmark",
-        "//mediapipe/tasks/python/components/containers:matrix_data",
         "//mediapipe/tasks/python/core:base_options",
         "//mediapipe/tasks/python/core:optional_dependencies",
         "//mediapipe/tasks/python/core:task_info",

mediapipe/tasks/python/vision/face_landmarker.py

@@ -17,6 +17,7 @@ import dataclasses
 import enum
 from typing import Callable, Mapping, Optional, List
 
+import numpy as np
 from mediapipe.framework.formats import classification_pb2
 from mediapipe.framework.formats import landmark_pb2
 from mediapipe.framework.formats import matrix_data_pb2
@@ -29,7 +30,6 @@ from mediapipe.tasks.cc.vision.face_landmarker.proto import face_landmarker_grap
 from mediapipe.tasks.cc.vision.face_geometry.proto import face_geometry_pb2
 from mediapipe.tasks.python.components.containers import category as category_module
 from mediapipe.tasks.python.components.containers import landmark as landmark_module
-from mediapipe.tasks.python.components.containers import matrix_data as matrix_data_module
 from mediapipe.tasks.python.core import base_options as base_options_module
 from mediapipe.tasks.python.core import task_info as task_info_module
 from mediapipe.tasks.python.core.optional_dependencies import doc_controls
@@ -39,6 +39,7 @@ from mediapipe.tasks.python.vision.core import vision_task_running_mode as runni
 
 _BaseOptions = base_options_module.BaseOptions
 _FaceLandmarkerGraphOptionsProto = face_landmarker_graph_options_pb2.FaceLandmarkerGraphOptions
+_LayoutEnum = matrix_data_pb2.MatrixData.Layout
 _RunningMode = running_mode_module.VisionTaskRunningMode
 _ImageProcessingOptions = image_processing_options_module.ImageProcessingOptions
 _TaskInfo = task_info_module.TaskInfo
@@ -126,7 +127,7 @@ class FaceLandmarkerResult:
 
   face_landmarks: List[List[landmark_module.NormalizedLandmark]]
   face_blendshapes: List[List[category_module.Category]]
-  facial_transformation_matrixes: List[matrix_data_module.MatrixData]
+  facial_transformation_matrixes: List[np.ndarray]
 
 
 def _build_landmarker_result(
@@ -170,7 +171,9 @@ def _build_landmarker_result(
       if proto.pose_transform_matrix:
         matrix_data = matrix_data_pb2.MatrixData()
         matrix_data.MergeFrom(proto.pose_transform_matrix)
-        matrix = matrix_data_module.MatrixData.create_from_pb2(matrix_data)
+        order = 'C' if matrix_data.layout == _LayoutEnum.ROW_MAJOR else 'F'
+        data = np.array(matrix_data.packed_data, order=order)
+        matrix = data.reshape((matrix_data.rows, matrix_data.cols))
         facial_transformation_matrixes_results.append(matrix)
 
   return FaceLandmarkerResult(face_landmarks_results, face_blendshapes_results,