Bitmap bmp = null; Mat tmp = new Mat (height, width, CvType.CV_8U, new Scalar(4)); try { //Imgproc.cvtColor(seedsImage, tmp, Imgproc.COLOR_RGB2BGRA); Imgproc.cvtColor(seedsImage, tmp, Imgproc.COLOR_GRAY2RGBA, 4); bmp = Bitmap.createBitmap(tmp.cols(), tmp.rows(), Bitmap.Config.ARGB_8888); Utils.matToBitmap(tmp, bmp); } catch (CvException e){Log.d("Exception",e.getMessage());}