detect method

@override Future<R> detect(VisionImage image, int rotationDegrees, int? timestampMilliseconds, { VisionRegionOfInterest? regionOfInterest, })

Completes with copied results; requests and disposal keep their submission order. Only the tasks that accept a region of interest receive regionOfInterest. A browser frame arrives as image.browserFrame, which the backend releases after inference.

Implementation

@override
Future<R> detect(
  VisionImage image,
  int rotationDegrees,
  int? timestampMilliseconds, {
  VisionRegionOfInterest? regionOfInterest,
}) => _submit(
  image.browserFrame != null
      ? {
          'bitmap': image.browserFrame,
          'width': image.width,
          'height': image.height,
          'rotation': rotationDegrees,
          'timestamp': timestampMilliseconds,
        }
      : {
          'path': image.path == null
              ? null
              : Uri.base.resolve(image.path!).toString(),
          'pixels': image.pixels == null
              ? null
              : Uint8List.fromList(image.pixels!).toJS,
          'width': image.width,
          'height': image.height,
          'format': image.format?.name,
          'stride': image.bytesPerRow,
          'rotation': rotationDegrees,
          'timestamp': timestampMilliseconds,
          'region': switch (regionOfInterest) {
            final r? => [r.left, r.top, r.right, r.bottom],
            null => null,
          },
        },
);