Why isAndroid use copyRotate and flipHorizontal?

[Guo8a]

codes below:

if (Platform.isAndroid) {
  image = imageLib.copyRotate(image, angle: -90);
  image = imageLib.flipHorizontal(image);
}
var tensorImage = TensorImage(TensorType.float32);
tensorImage.loadImage(image);
tensorImage = imageProcessor.process(tensorImage);