Merge pull request #4600 from priankakariatyml:ios-orientation-fix

PiperOrigin-RevId: 546358930

mediapipe/tasks/ios/test/vision/face_detector/MPPFaceDetectorTests.mm

@@ -25,7 +25,7 @@
 static NSDictionary *const kPortraitImage =
     @{@"name" : @"portrait", @"type" : @"jpg", @"orientation" : @(UIImageOrientationUp)};
 static NSDictionary *const kPortraitRotatedImage =
-    @{@"name" : @"portrait_rotated", @"type" : @"jpg", @"orientation" : @(UIImageOrientationRight)};
+    @{@"name" : @"portrait_rotated", @"type" : @"jpg", @"orientation" : @(UIImageOrientationLeft)};
 static NSDictionary *const kCatImage = @{@"name" : @"cat", @"type" : @"jpg"};
 static NSString *const kShortRangeBlazeFaceModel = @"face_detection_short_range";
 static NSArray<NSArray *> *const kPortraitExpectedKeypoints = @[

mediapipe/tasks/ios/test/vision/gesture_recognizer/MPPGestureRecognizerTests.m

@@ -343,7 +343,7 @@ static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
   MPPGestureRecognizer *gestureRecognizer =
       [self createGestureRecognizerWithOptionsSucceeds:gestureRecognizerOptions];
   MPPImage *mppImage = [self imageWithFileInfo:kPointingUpRotatedImage
-                                   orientation:UIImageOrientationRight];
+                                   orientation:UIImageOrientationLeft];
 
   MPPGestureRecognizerResult *gestureRecognizerResult = [gestureRecognizer recognizeImage:mppImage
                                                                                     error:nil];

mediapipe/tasks/ios/test/vision/image_classifier/MPPImageClassifierTests.m

@@ -402,7 +402,7 @@ static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
   ];
 
   MPPImage *image = [self imageWithFileInfo:kBurgerRotatedImage
-                                orientation:UIImageOrientationRight];
+                                orientation:UIImageOrientationLeft];
 
   [self assertResultsOfClassifyImage:image
                 usingImageClassifier:imageClassifier
@@ -425,7 +425,7 @@ static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
                                 displayName:nil] ];
 
   MPPImage *image = [self imageWithFileInfo:kMultiObjectsRotatedImage
-                                orientation:UIImageOrientationRight];
+                                orientation:UIImageOrientationLeft];
 
   // roi around folding chair
   MPPImageClassifierResult *imageClassifierResult =

mediapipe/tasks/ios/test/vision/object_detector/MPPObjectDetectorTests.m

@@ -438,7 +438,7 @@ static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
       [[MPPObjectDetectorResult alloc] initWithDetections:detections timestampInMilliseconds:0];
 
   MPPImage *image = [self imageWithFileInfo:kCatsAndDogsRotatedImage
-                                orientation:UIImageOrientationRight];
+                                orientation:UIImageOrientationLeft];
 
   [self assertResultsOfDetectInImage:image
                  usingObjectDetector:objectDetector

mediapipe/tasks/ios/vision/core/sources/MPPImage.h

@@ -62,10 +62,10 @@ NS_SWIFT_NAME(MPImage)
 
 /**
  * Initializes an `MPPImage` object with the given `UIImage`.
- * The orientation of the newly created `MPPImage` will be `UIImageOrientationUp`.
- * Hence, if this image is used as input for any MediaPipe vision tasks, inference will be
- * performed on the it without any rotation. To create an `MPPImage` with a different orientation,
- * please use `[MPPImage initWithImage:orientation:error:]`.
+ * The orientation of the newly created `MPPImage` will be equal to the `imageOrientation` of
+ * `UIImage` and when sent to the vision tasks for inference, rotation will be applied accordingly.
+ * To create an `MPPImage` with an orientation different from its `imageOrientation`, please use
+ * `[MPPImage initWithImage:orientation:error:]`.
  *
  * @param image The image to use as the source. Its `CGImage` property must not be `NULL`.
  * @param error An optional error parameter populated when there is an error in initializing the
@@ -77,14 +77,19 @@ NS_SWIFT_NAME(MPImage)
 - (nullable instancetype)initWithUIImage:(UIImage *)image error:(NSError **)error;
 
 /**
- * Initializes an `MPPImage` object with the given `UIImabe` and orientation.
+ * Initializes an `MPPImage` object with the given `UIImage` and orientation. The given orientation
+ * will be used to calculate the rotation to be applied to the `UIImage` before inference is
+ * performed on it by the vision tasks. The `imageOrientation` stored in the `UIImage` is ignored
+ * when `MPImage` objects created by this method are sent to the vision tasks for inference. Use
+ * `[MPPImage initWithImage:orientation:error:]` to initialize images with the `imageOrientation` of
+ * `UIImage`.
  *
  * If the newly created `MPPImage` is used as input for any MediaPipe vision tasks, inference
  * will be performed on a copy of the image rotated according to the orientation.
  *
  * @param image The image to use as the source. Its `CGImage` property must not be `NULL`.
  * @param orientation The display orientation of the image. This will be stored in the property
- *     `orientation`. `MPPImage`.
+ *     `orientation` `MPPImage` and will override the `imageOrientation` of the passed in `UIImage`.
  * @param error An optional error parameter populated when there is an error in initializing the
  *     `MPPImage`.
  *

mediapipe/tasks/ios/vision/core/sources/MPPVisionTaskRunner.mm

@@ -30,13 +30,13 @@ using ::mediapipe::tasks::core::PacketsCallback;
 }  // namespace
 
 /** Rotation degrees for a 90 degree rotation to the right. */
-static const NSInteger kMPPOrientationDegreesRight = -90;
+static const NSInteger kMPPOrientationDegreesRight = -270;
 
 /** Rotation degrees for a 180 degree rotation. */
 static const NSInteger kMPPOrientationDegreesDown = -180;
 
 /** Rotation degrees for a 90 degree rotation to the left. */
-static const NSInteger kMPPOrientationDegreesLeft = -270;
+static const NSInteger kMPPOrientationDegreesLeft = -90;
 
 static NSString *const kTaskPrefix = @"com.mediapipe.tasks.vision";