truongsinh

// ...
  final inputTensor = localInterpreter.getInputTensors().single;
  // shape 1, 300, 300, 3; 1 image * 300 width * 300 height * 3 colors
  inputTensor.data = imgData;
  localInterpreter.invoke();
  // https://www.tensorflow.org/lite/models/object_detection/overview

truongsinh

class PreProcessedImageData {
  final Size originalSize;
  final Uint8List preProccessedImageBytes;

  PreProcessedImageData._(this.originalSize, this.preProccessedImageBytes);

  factory PreProcessedImageData(CameraImage camImg) {
    final rawRgbImage = convertCameraImageToImageColor(camImg);
    final rgbImage = // camera plugin on Android sucks

truongsinh

// ...
imglib.Image convertBGRA8888toImageColor(CameraImage image) {
  final result = imglib.Image.fromBytes(
    image.width,
    image.height,
    image.planes[0].bytes,
    format: imglib.Format.bgra,
  );
  return result;
}

truongsinh

// ...
imglib.Image convertBGRA8888toImageColor(CameraImage image) {
  final result = imglib.Image.fromBytes(
    image.width,
    image.height,
    image.planes[0].bytes,
    format: imglib.Format.bgra,
  );
  return result;
}

truongsinh

// ...
Future<tfl.Interpreter> tflInterpreter(
  String modelFile, {
  int numThreads = 1,
}) async {
  final rawModel = await rootBundle.load('assets/$modelFile');

  Directory appDocDir = await getTemporaryDirectory();
  String appDocPath = appDocDir.path;
  final localFile = File('$appDocPath/$modelFile');

truongsinh

// ...
imglib.Image convertYUV420toImageColor(CameraImage image) {
  final int width = image.width;
  final int height = image.height;
  final int uvRowStride = image.planes[1].bytesPerRow;
  final int uvPixelStride = image.planes[1].bytesPerPixel;

  const alpha255 = (0xFF << 24);

  // imgLib -> Image package from https://pub.dartlang.org/packages/image

truongsinh

// ...
  final labels = (await rootBundle.loadString('assets/$labels')).split("\n").sublist(1);
// ...

truongsinh

	<key>NSCameraUsageDescription</key>
	<string>Camera is used to do live preview</string>

truongsinh

# ...

dependencies:
  camera: 0.5.2+2
  path_provider: 1.3.0
  image: 2.1.4
  tflite_native:
    git:
      url: https://github.com/truongsinh/tflite_native.git
      ref: d2458d1

truongsinh

# ...

# The following section is specific to Flutter.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true