[firebase_ml_vision] Live Camera mode, with front camera Android , the smile image is painted in opposite direction in the horizontal axis.

[nqdung230690]

I use example in https://github.com/giandifra/Flutter-Smile-Face-Detection but in Live Camera mode, with front camera Android , the smile image is painted in opposite direction in the horizontal axis. How to fix this issuse ? Sorry my English very bad

[greenlihui]

I didn't read through your code, but I think the problem may be similar to this:
For example in the [firebase_ml_vision]:
in the FaceDetectorPainter

• when using rear(back) camera, code below works well

for (Face face in faces) {
      canvas.drawRect(
        Rect.fromLTWH(
          face.boundingBox.left * scaleX,
          face.boundingBox.top * scaleY,
          face.boundingBox.width * scaleX,
          face.boundingBox.height * scaleY,
        ),
        paint,
      );
}

• when using front camera, (I suppose) the image being streamed is mirrored in the screen(CameraPreivew), code below works for front camera(change left to mirrored left):

for (Face face in faces) {
      canvas.drawRect(
        Rect.fromLTWH(
          (absoluteImageSize.width - face.boundingBox.right) * scaleX,
          face.boundingBox.top * scaleY,
          face.boundingBox.width * scaleX,
          face.boundingBox.height * scaleY,
        ),
        paint,
      );
}

By the way, I am using drawLTWH() instead of draw LTRB() so that I only need to adjust the position of left bounding.