Good day. I am developing a cash reader for people like me that is blind. I get the image from camera stream and with regular expression grab the digits from the banknote and use google_ml_kit to get the nomination. But it only works if the banknote is in the uprite position. So I also do a check if the number startswith '0' then I want the image to be rotated 180 degrees or if a uint8list flipped. But this is where I run into how to do this. I searched and could not get a way to flip the uint8list, to see if it will work if I reverse it. Also I seem not to find a way to rotate the image from the camera stream. Even though in the code below there is a image rotate variable but do nothing if I set it to 180. Can anyone please direct me to a solution. Below is part of the code I think is relevant on this.
Future _processCameraImage(CameraImage image) async {
final WriteBuffer allBytes = WriteBuffer();
for (Plane plane in image.planes) {
allBytes.putUint8List(plane.bytes);
}
final bytes = allBytes.done().buffer.asUint8List();
final Size imageSize =
Size(image.width.toDouble(), image.height.toDouble());
final camera = cameras[_cameraIndex];
final imageRotation =
InputImageRotationMethods.fromRawValue(camera.sensorOrientation) ??
InputImageRotation.Rotation_0deg;
final inputImageFormat =
InputImageFormatMethods.fromRawValue(image.format.raw) ??
InputImageFormat.NV21;
final planeData = image.planes.map(
(Plane plane) {
return InputImagePlaneMetadata(
bytesPerRow: plane.bytesPerRow,
height: plane.height,
width: plane.width,
);
},
).toList();
final inputImageData = InputImageData(
size: imageSize,
imageRotation: imageRotation,
inputImageFormat: inputImageFormat,
planeData: planeData,
);
final inputImage =
InputImage.fromBytes(bytes: bytes, inputImageData: inputImageData);
widget.onImage(inputImage);
List? speakText = [];
speakText = widget.outputText;
if (speakText!.isNotEmpty) {
await _speak('${widget.outputText}');
} else {
_speak('');
}
}