ImageUtils.java

public static Bitmap prepareImageForClassification(Bitmap bitmap) {
    Paint paint = new Paint();
    Bitmap finalBitmap = Bitmap.createScaledBitmap(
            bitmap,
            GtsrbModelConfig.INPUT_IMG_SIZE_WIDTH,
            GtsrbModelConfig.INPUT_IMG_SIZE_HEIGHT,
            false);
    Canvas canvas = new Canvas(finalBitmap);
    canvas.drawBitmap(finalBitmap, 0, 0, paint);
    return finalBitmap;
}