Merge pull request #4372 from priankakariatyml:ios-image-classifier-async-fixes
PiperOrigin-RevId: 531517080
This commit is contained in:
commit
c7ba201e6a
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@ -27,6 +27,8 @@ static NSDictionary *const kMultiObjectsRotatedImage =
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@{@"name" : @"multi_objects_rotated", @"type" : @"jpg"};
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static const int kMobileNetCategoriesCount = 1001;
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static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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static NSString *const kLiveStreamTestsDictImageClassifierKey = @"image_classifier";
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static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
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#define AssertEqualErrors(error, expectedError) \
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XCTAssertNotNil(error); \
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@ -54,11 +56,14 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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XCTAssertEqual(imageClassifierResult.classificationResult.classifications.count, 1); \
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XCTAssertEqual(imageClassifierResult.classificationResult.classifications[0].headIndex, 0);
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@interface MPPImageClassifierTests : XCTestCase
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@interface MPPImageClassifierTests : XCTestCase <MPPImageClassifierLiveStreamDelegate> {
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NSDictionary *liveStreamSucceedsTestDict;
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NSDictionary *outOfOrderTimestampTestDict;
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}
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@end
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@implementation MPPImageClassifierTests
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#pragma mark Results
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+ (NSArray<MPPCategory *> *)expectedResultCategoriesForClassifyBurgerImageWithFloatModel {
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@ -436,14 +441,13 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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#pragma mark Running Mode Tests
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- (void)testCreateImageClassifierFailsWithResultListenerInNonLiveStreamMode {
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- (void)testCreateImageClassifierFailsWithDelegateInNonLiveStreamMode {
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MPPRunningMode runningModesToTest[] = {MPPRunningModeImage, MPPRunningModeVideo};
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for (int i = 0; i < sizeof(runningModesToTest) / sizeof(runningModesToTest[0]); i++) {
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MPPImageClassifierOptions *options = [self imageClassifierOptionsWithModelName:kFloatModelName];
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options.runningMode = runningModesToTest[i];
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options.completion = ^(MPPImageClassifierResult *result, NSError *error) {
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};
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options.imageClassifierLiveStreamDelegate = self;
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[self
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assertCreateImageClassifierWithOptions:options
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@ -459,7 +463,7 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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}
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}
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- (void)testCreateImageClassifierFailsWithMissingResultListenerInLiveStreamMode {
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- (void)testCreateImageClassifierFailsWithMissingDelegateInLiveStreamMode {
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MPPImageClassifierOptions *options = [self imageClassifierOptionsWithModelName:kFloatModelName];
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options.runningMode = MPPRunningModeLiveStream;
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@ -555,9 +559,7 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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MPPImageClassifierOptions *options = [self imageClassifierOptionsWithModelName:kFloatModelName];
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options.runningMode = MPPRunningModeLiveStream;
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options.completion = ^(MPPImageClassifierResult *result, NSError *error) {
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};
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options.imageClassifierLiveStreamDelegate = self;
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MPPImageClassifier *imageClassifier = [self imageClassifierWithOptionsSucceeds:options];
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@ -621,16 +623,20 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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options.maxResults = maxResults;
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options.runningMode = MPPRunningModeLiveStream;
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options.completion = ^(MPPImageClassifierResult *result, NSError *error) {
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[self assertImageClassifierResult:result
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hasExpectedCategoriesCount:maxResults
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expectedCategories:
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[MPPImageClassifierTests
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expectedResultCategoriesForClassifyBurgerImageWithFloatModel]];
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};
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options.imageClassifierLiveStreamDelegate = self;
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XCTestExpectation *expectation = [[XCTestExpectation alloc]
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initWithDescription:@"classifyWithOutOfOrderTimestampsAndLiveStream"];
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expectation.expectedFulfillmentCount = 1;
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MPPImageClassifier *imageClassifier = [self imageClassifierWithOptionsSucceeds:options];
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outOfOrderTimestampTestDict = @{
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kLiveStreamTestsDictImageClassifierKey : imageClassifier,
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kLiveStreamTestsDictExpectationKey : expectation
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};
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MPPImage *image = [self imageWithFileInfo:kBurgerImage];
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XCTAssertTrue([imageClassifier classifyAsyncImage:image timestampInMilliseconds:1 error:nil]);
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@ -646,6 +652,9 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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@"INVALID_ARGUMENT: Input timestamp must be monotonically increasing."
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}];
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AssertEqualErrors(error, expectedError);
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NSTimeInterval timeout = 0.5f;
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[self waitForExpectations:@[ expectation ] timeout:timeout];
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}
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- (void)testClassifyWithLiveStreamModeSucceeds {
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@ -655,24 +664,64 @@ static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
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options.maxResults = maxResults;
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options.runningMode = MPPRunningModeLiveStream;
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options.completion = ^(MPPImageClassifierResult *result, NSError *error) {
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[self assertImageClassifierResult:result
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hasExpectedCategoriesCount:maxResults
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expectedCategories:
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[MPPImageClassifierTests
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expectedResultCategoriesForClassifyBurgerImageWithFloatModel]];
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};
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options.imageClassifierLiveStreamDelegate = self;
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NSInteger iterationCount = 100;
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// Because of flow limiting, we cannot ensure that the callback will be
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// invoked `iterationCount` times.
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// An normal expectation will fail if expectation.fullfill() is not called
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// `expectation.expectedFulfillmentCount` times.
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// If `expectation.isInverted = true`, the test will only succeed if
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// expectation is not fullfilled for the specified `expectedFulfillmentCount`.
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// Since in our case we cannot predict how many times the expectation is
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// supposed to be fullfilled setting,
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// `expectation.expectedFulfillmentCount` = `iterationCount` + 1 and
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// `expectation.isInverted = true` ensures that test succeeds if
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// expectation is fullfilled <= `iterationCount` times.
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XCTestExpectation *expectation =
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[[XCTestExpectation alloc] initWithDescription:@"classifyWithLiveStream"];
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expectation.expectedFulfillmentCount = iterationCount + 1;
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expectation.inverted = YES;
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MPPImageClassifier *imageClassifier = [self imageClassifierWithOptionsSucceeds:options];
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liveStreamSucceedsTestDict = @{
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kLiveStreamTestsDictImageClassifierKey : imageClassifier,
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kLiveStreamTestsDictExpectationKey : expectation
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};
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// TODO: Mimic initialization from CMSampleBuffer as live stream mode is most likely to be used
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// with the iOS camera. AVCaptureVideoDataOutput sample buffer delegates provide frames of type
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// `CMSampleBuffer`.
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MPPImage *image = [self imageWithFileInfo:kBurgerImage];
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for (int i = 0; i < 3; i++) {
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for (int i = 0; i < iterationCount; i++) {
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XCTAssertTrue([imageClassifier classifyAsyncImage:image timestampInMilliseconds:i error:nil]);
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}
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NSTimeInterval timeout = 0.5f;
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[self waitForExpectations:@[ expectation ] timeout:timeout];
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}
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- (void)imageClassifier:(MPPImageClassifier *)imageClassifier
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didFinishClassificationWithResult:(MPPImageClassifierResult *)imageClassifierResult
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timestampInMilliseconds:(NSInteger)timestampInMilliseconds
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error:(NSError *)error {
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NSInteger maxResults = 3;
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[self assertImageClassifierResult:imageClassifierResult
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hasExpectedCategoriesCount:maxResults
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expectedCategories:
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[MPPImageClassifierTests
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expectedResultCategoriesForClassifyBurgerImageWithFloatModel]];
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if (imageClassifier == outOfOrderTimestampTestDict[kLiveStreamTestsDictImageClassifierKey]) {
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[outOfOrderTimestampTestDict[kLiveStreamTestsDictExpectationKey] fulfill];
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} else if (imageClassifier ==
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liveStreamSucceedsTestDict[kLiveStreamTestsDictImageClassifierKey]) {
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[liveStreamSucceedsTestDict[kLiveStreamTestsDictExpectationKey] fulfill];
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}
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}
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@end
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@ -85,6 +85,14 @@ NS_SWIFT_NAME(ImageClassifier)
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* interest. Rotation will be applied according to the `orientation` property of the provided
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* `MPPImage`. Only use this method when the `MPPImageClassifier` is created with
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* `MPPRunningModeImage`.
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* This method supports classification of RGBA images. If your `MPPImage` has a source type of
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* `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
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* must have one of the following pixel format types:
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* 1. kCVPixelFormatType_32BGRA
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* 2. kCVPixelFormatType_32RGBA
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*
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* If your `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color space is
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* RGB with an Alpha channel.
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*
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* @param image The `MPPImage` on which image classification is to be performed.
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* @param error An optional error parameter populated when there is an error in performing image
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@ -102,6 +110,15 @@ NS_SWIFT_NAME(ImageClassifier)
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* of the provided `MPPImage`. Only use this method when the `MPPImageClassifier` is created with
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* `MPPRunningModeImage`.
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*
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* This method supports classification of RGBA images. If your `MPPImage` has a source type of
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* `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
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* must have one of the following pixel format types:
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* 1. kCVPixelFormatType_32BGRA
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* 2. kCVPixelFormatType_32RGBA
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*
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* If your `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color space is
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* RGB with an Alpha channel.
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*
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* @param image The `MPPImage` on which image classification is to be performed.
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* @param roi A `CGRect` specifying the region of interest within the given `MPPImage`, on which
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* image classification should be performed.
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@ -121,6 +138,18 @@ NS_SWIFT_NAME(ImageClassifier)
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* the provided `MPPImage`. Only use this method when the `MPPImageClassifier` is created with
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* `MPPRunningModeVideo`.
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*
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* It's required to provide the video frame's timestamp (in milliseconds). The input timestamps must
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* be monotonically increasing.
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*
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* This method supports classification of RGBA images. If your `MPPImage` has a source type of
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* `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
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* must have one of the following pixel format types:
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* 1. kCVPixelFormatType_32BGRA
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* 2. kCVPixelFormatType_32RGBA
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*
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* If your `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color space is
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* RGB with an Alpha channel.
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*
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* @param image The `MPPImage` on which image classification is to be performed.
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* @param timestampInMilliseconds The video frame's timestamp (in milliseconds). The input
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* timestamps must be monotonically increasing.
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@ -143,6 +172,15 @@ NS_SWIFT_NAME(ImageClassifier)
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* It's required to provide the video frame's timestamp (in milliseconds). The input timestamps must
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* be monotonically increasing.
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*
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* This method supports classification of RGBA images. If your `MPPImage` has a source type of
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* `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
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* must have one of the following pixel format types:
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* 1. kCVPixelFormatType_32BGRA
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* 2. kCVPixelFormatType_32RGBA
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*
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* If your `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color space is
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* RGB with an Alpha channel.
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*
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* @param image A live stream image data of type `MPPImage` on which image classification is to be
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* performed.
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* @param timestampInMilliseconds The video frame's timestamp (in milliseconds). The input
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@ -164,12 +202,29 @@ NS_SWIFT_NAME(ImageClassifier)
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* Sends live stream image data of type `MPPImage` to perform image classification using the whole
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* image as region of interest. Rotation will be applied according to the `orientation` property of
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* the provided `MPPImage`. Only use this method when the `MPPImageClassifier` is created with
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* `MPPRunningModeLiveStream`. Results are provided asynchronously via the `completion` callback
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* provided in the `MPPImageClassifierOptions`.
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* `MPPRunningModeLiveStream`.
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*
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* The object which needs to be continuously notified of the available results of image
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* classification must confirm to `MPPImageClassifierLiveStreamDelegate` protocol and implement the
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* `imageClassifier:didFinishClassificationWithResult:timestampInMilliseconds:error:`
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* delegate method.
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*
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* It's required to provide a timestamp (in milliseconds) to indicate when the input image is sent
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* to the image classifier. The input timestamps must be monotonically increasing.
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*
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* This method supports classification of RGBA images. If your `MPPImage` has a source type of
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* `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
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* must have one of the following pixel format types:
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* 1. kCVPixelFormatType_32BGRA
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* 2. kCVPixelFormatType_32RGBA
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*
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* If the input `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color
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* space is RGB with an Alpha channel.
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*
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* If this method is used for classifying live camera frames using `AVFoundation`, ensure that you
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* request `AVCaptureVideoDataOutput` to output frames in `kCMPixelFormat_32RGBA` using its
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* `videoSettings` property.
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*
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* @param image A live stream image data of type `MPPImage` on which image classification is to be
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* performed.
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* @param timestampInMilliseconds The timestamp (in milliseconds) which indicates when the input
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@ -185,15 +240,32 @@ NS_SWIFT_NAME(ImageClassifier)
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NS_SWIFT_NAME(classifyAsync(image:timestampInMilliseconds:));
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/**
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* Sends live stream image data of type `MPPImage` to perform image classification, cropped to the
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* Sends live stream image data of type ``MPPImage`` to perform image classification, cropped to the
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* specified region of interest.. Rotation will be applied according to the `orientation` property
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* of the provided `MPPImage`. Only use this method when the `MPPImageClassifier` is created with
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* `MPPRunningModeLiveStream`. Results are provided asynchronously via the `completion` callback
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* provided in the `MPPImageClassifierOptions`.
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* `MPPRunningModeLiveStream`.
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*
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* The object which needs to be continuously notified of the available results of image
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* classification must confirm to `MPPImageClassifierLiveStreamDelegate` protocol and implement the
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* `imageClassifier:didFinishClassificationWithResult:timestampInMilliseconds:error:` delegate
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* method.
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*
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* It's required to provide a timestamp (in milliseconds) to indicate when the input image is sent
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* to the image classifier. The input timestamps must be monotonically increasing.
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*
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* This method supports classification of RGBA images. If your `MPPImage` has a source type of
|
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* `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
|
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* must have one of the following pixel format types:
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* 1. kCVPixelFormatType_32BGRA
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* 2. kCVPixelFormatType_32RGBA
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*
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* If the input `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color
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* space is RGB with an Alpha channel.
|
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*
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* If this method is used for classifying live camera frames using `AVFoundation`, ensure that you
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* request `AVCaptureVideoDataOutput` to output frames in `kCMPixelFormat_32RGBA` using its
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* `videoSettings` property.
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*
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* @param image A live stream image data of type `MPPImage` on which image classification is to be
|
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* performed.
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* @param timestampInMilliseconds The timestamp (in milliseconds) which indicates when the input
|
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|
|
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@ -27,6 +27,7 @@
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namespace {
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using ::mediapipe::NormalizedRect;
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using ::mediapipe::Packet;
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using ::mediapipe::Timestamp;
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using ::mediapipe::tasks::core::PacketMap;
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using ::mediapipe::tasks::core::PacketsCallback;
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} // namespace
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|
@ -38,9 +39,11 @@ static NSString *const kImageOutStreamName = @"image_out";
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static NSString *const kImageTag = @"IMAGE";
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static NSString *const kNormRectStreamName = @"norm_rect_in";
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static NSString *const kNormRectTag = @"NORM_RECT";
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static NSString *const kTaskGraphName =
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@"mediapipe.tasks.vision.image_classifier.ImageClassifierGraph";
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static NSString *const kTaskName = @"imageClassifier";
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static const int kMicroSecondsPerMilliSecond = 1000;
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|
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#define InputPacketMap(imagePacket, normalizedRectPacket) \
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{ \
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|
@ -53,6 +56,8 @@ static NSString *const kTaskGraphName =
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/** iOS Vision Task Runner */
|
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MPPVisionTaskRunner *_visionTaskRunner;
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}
|
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@property(nonatomic, weak) id<MPPImageClassifierLiveStreamDelegate>
|
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imageClassifierLiveStreamDelegate;
|
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@end
|
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|
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@implementation MPPImageClassifier
|
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|
@ -81,16 +86,58 @@ static NSString *const kTaskGraphName =
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|
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PacketsCallback packetsCallback = nullptr;
|
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|
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if (options.completion) {
|
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if (options.imageClassifierLiveStreamDelegate) {
|
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_imageClassifierLiveStreamDelegate = options.imageClassifierLiveStreamDelegate;
|
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// Capturing `self` as weak in order to avoid `self` being kept in memory
|
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// and cause a retain cycle, after self is set to `nil`.
|
||||
MPPImageClassifier *__weak weakSelf = self;
|
||||
|
||||
// Create a private serial dispatch queue in which the deleagte method will be called
|
||||
// asynchronously. This is to ensure that if the client performs a long running operation in
|
||||
// the delegate method, the queue on which the C++ callbacks is invoked is not blocked and is
|
||||
// freed up to continue with its operations.
|
||||
const char *queueName = [MPPVisionTaskRunner uniqueDispatchQueueNameWithSuffix:kTaskName];
|
||||
dispatch_queue_t callbackQueue = dispatch_queue_create(queueName, NULL);
|
||||
packetsCallback = [=](absl::StatusOr<PacketMap> status_or_packets) {
|
||||
NSError *callbackError = nil;
|
||||
MPPImageClassifierResult *result;
|
||||
if ([MPPCommonUtils checkCppError:status_or_packets.status() toError:&callbackError]) {
|
||||
result = [MPPImageClassifierResult
|
||||
imageClassifierResultWithClassificationsPacket:
|
||||
status_or_packets.value()[kClassificationsStreamName.cppString]];
|
||||
if (!weakSelf) {
|
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return;
|
||||
}
|
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options.completion(result, callbackError);
|
||||
if (![weakSelf.imageClassifierLiveStreamDelegate
|
||||
respondsToSelector:@selector
|
||||
(imageClassifier:
|
||||
didFinishClassificationWithResult:timestampInMilliseconds:error:)]) {
|
||||
return;
|
||||
}
|
||||
|
||||
NSError *callbackError = nil;
|
||||
if (![MPPCommonUtils checkCppError:status_or_packets.status() toError:&callbackError]) {
|
||||
dispatch_async(callbackQueue, ^{
|
||||
[weakSelf.imageClassifierLiveStreamDelegate imageClassifier:weakSelf
|
||||
didFinishClassificationWithResult:nil
|
||||
timestampInMilliseconds:Timestamp::Unset().Value()
|
||||
error:callbackError];
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
PacketMap &outputPacketMap = status_or_packets.value();
|
||||
if (outputPacketMap[kImageOutStreamName.cppString].IsEmpty()) {
|
||||
return;
|
||||
}
|
||||
|
||||
MPPImageClassifierResult *result =
|
||||
[MPPImageClassifierResult imageClassifierResultWithClassificationsPacket:
|
||||
outputPacketMap[kClassificationsStreamName.cppString]];
|
||||
|
||||
NSInteger timeStampInMilliseconds =
|
||||
outputPacketMap[kImageOutStreamName.cppString].Timestamp().Value() /
|
||||
kMicroSecondsPerMilliSecond;
|
||||
dispatch_async(callbackQueue, ^{
|
||||
[weakSelf.imageClassifierLiveStreamDelegate imageClassifier:weakSelf
|
||||
didFinishClassificationWithResult:result
|
||||
timestampInMilliseconds:timeStampInMilliseconds
|
||||
error:callbackError];
|
||||
});
|
||||
};
|
||||
}
|
||||
|
||||
|
|
|
@ -20,20 +20,67 @@
|
|||
|
||||
NS_ASSUME_NONNULL_BEGIN
|
||||
|
||||
@class MPPImageClassifier;
|
||||
|
||||
/**
|
||||
* This protocol defines an interface for the delegates of `MPPImageClassifier` object to receive
|
||||
* results of asynchronous classification of images (i.e, when `runningMode =
|
||||
* MPPRunningModeLiveStream`).
|
||||
*
|
||||
* The delegate of `MPPImageClassifier` must adopt `MPPImageClassifierLiveStreamDelegate` protocol.
|
||||
* The methods in this protocol are optional.
|
||||
*/
|
||||
NS_SWIFT_NAME(ImageClassifierLiveStreamDelegate)
|
||||
@protocol MPPImageClassifierLiveStreamDelegate <NSObject>
|
||||
|
||||
@optional
|
||||
/**
|
||||
* This method notifies a delegate that the results of asynchronous classification of
|
||||
* an image submitted to the `MPPImageClassifier` is available.
|
||||
*
|
||||
* This method is called on a private serial queue created by the `MPPImageClassifier`
|
||||
* for performing the asynchronous delegates calls.
|
||||
*
|
||||
* @param imageClassifier The image classifier which performed the classification.
|
||||
* This is useful to test equality when there are multiple instances of `MPPImageClassifier`.
|
||||
* @param result An `MPPImageClassifierResult` object that contains a list of image classifications.
|
||||
* @param timestampInMilliseconds The timestamp (in milliseconds) which indicates when the input
|
||||
* image was sent to the image classifier.
|
||||
* @param error An optional error parameter populated when there is an error in performing image
|
||||
* classification on the input live stream image data.
|
||||
*/
|
||||
- (void)imageClassifier:(MPPImageClassifier *)imageClassifier
|
||||
didFinishClassificationWithResult:(nullable MPPImageClassifierResult *)result
|
||||
timestampInMilliseconds:(NSInteger)timestampInMilliseconds
|
||||
error:(nullable NSError *)error
|
||||
NS_SWIFT_NAME(imageClassifier(_:didFinishClassification:timestampInMilliseconds:error:));
|
||||
@end
|
||||
|
||||
/**
|
||||
* Options for setting up a `MPPImageClassifier`.
|
||||
*/
|
||||
NS_SWIFT_NAME(ImageClassifierOptions)
|
||||
@interface MPPImageClassifierOptions : MPPTaskOptions <NSCopying>
|
||||
|
||||
/**
|
||||
* Running mode of the image classifier task. Defaults to `MPPRunningModeImage`.
|
||||
* `MPPImageClassifier` can be created with one of the following running modes:
|
||||
* 1. `MPPRunningModeImage`: The mode for performing classification on single image inputs.
|
||||
* 2. `MPPRunningModeVideo`: The mode for performing classification on the decoded frames of a
|
||||
* video.
|
||||
* 3. `MPPRunningModeLiveStream`: The mode for performing classification on a live stream of input
|
||||
* data, such as from the camera.
|
||||
*/
|
||||
@property(nonatomic) MPPRunningMode runningMode;
|
||||
|
||||
/**
|
||||
* The user-defined result callback for processing live stream data. The result callback should only
|
||||
* be specified when the running mode is set to the live stream mode.
|
||||
* TODO: Add parameter `MPPImage` in the callback.
|
||||
* An object that confirms to `MPPImageClassifierLiveStreamDelegate` protocol. This object must
|
||||
* implement `objectDetector:didFinishDetectionWithResult:timestampInMilliseconds:error:` to receive
|
||||
* the results of asynchronous classification on images (i.e, when `runningMode =
|
||||
* MPPRunningModeLiveStream`).
|
||||
*/
|
||||
@property(nonatomic, copy) void (^completion)(MPPImageClassifierResult *result, NSError *error);
|
||||
@property(nonatomic, weak, nullable) id<MPPImageClassifierLiveStreamDelegate>
|
||||
imageClassifierLiveStreamDelegate;
|
||||
|
||||
/**
|
||||
* The locale to use for display names specified through the TFLite Model Metadata, if any. Defaults
|
||||
|
|
|
@ -33,7 +33,7 @@
|
|||
imageClassifierOptions.categoryDenylist = self.categoryDenylist;
|
||||
imageClassifierOptions.categoryAllowlist = self.categoryAllowlist;
|
||||
imageClassifierOptions.displayNamesLocale = self.displayNamesLocale;
|
||||
imageClassifierOptions.completion = self.completion;
|
||||
imageClassifierOptions.imageClassifierLiveStreamDelegate = self.imageClassifierLiveStreamDelegate;
|
||||
|
||||
return imageClassifierOptions;
|
||||
}
|
||||
|
|
|
@ -28,7 +28,7 @@ NS_ASSUME_NONNULL_BEGIN
|
|||
*
|
||||
* @return An `MPPImageClassifierResult` object that contains a list of image classifications.
|
||||
*/
|
||||
+ (MPPImageClassifierResult *)imageClassifierResultWithClassificationsPacket:
|
||||
+ (nullable MPPImageClassifierResult *)imageClassifierResultWithClassificationsPacket:
|
||||
(const mediapipe::Packet &)packet;
|
||||
|
||||
@end
|
||||
|
|
|
@ -27,9 +27,15 @@ using ::mediapipe::Packet;
|
|||
|
||||
@implementation MPPImageClassifierResult (Helpers)
|
||||
|
||||
+ (MPPImageClassifierResult *)imageClassifierResultWithClassificationsPacket:
|
||||
+ (nullable MPPImageClassifierResult *)imageClassifierResultWithClassificationsPacket:
|
||||
(const Packet &)packet {
|
||||
MPPClassificationResult *classificationResult = [MPPClassificationResult
|
||||
MPPClassificationResult *classificationResult;
|
||||
|
||||
if (!packet.ValidateAsType<ClassificationResultProto>().ok()) {
|
||||
return nil;
|
||||
}
|
||||
|
||||
classificationResult = [MPPClassificationResult
|
||||
classificationResultWithProto:packet.Get<ClassificationResultProto>()];
|
||||
|
||||
return [[MPPImageClassifierResult alloc]
|
||||
|
|
|
@ -52,7 +52,6 @@ NS_SWIFT_NAME(ObjectDetectorLiveStreamDelegate)
|
|||
* image was sent to the object detector.
|
||||
* @param error An optional error parameter populated when there is an error in performing object
|
||||
* detection on the input live stream image data.
|
||||
*
|
||||
*/
|
||||
- (void)objectDetector:(MPPObjectDetector *)objectDetector
|
||||
didFinishDetectionWithResult:(nullable MPPObjectDetectionResult *)result
|
||||
|
|
Loading…
Reference in New Issue
Block a user