private Bitmap getImageMaskBitmap(Uri imagePath) {
        try {
            Bitmap maskBitmap = null;

            if (maskBitmap == null) {
                if (imagePath.getPath() != null) {
                    Log.d("dbg", "Def uri: " + imagePath.getPath());
                    String imageDirectory = imagePath.getPath()
                                                     .replace("/".concat(imageFilename), "");
                    String maskPath = imageDirectory.concat("/".concat(DATASET_DIRECTORY_NAME)
                                                               .concat("/")
                                                               .concat(imageFilename));
                    File f = new File(getPath(imagePath));
                    Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(),
                                                                      Uri.parse(maskPath));
                }
            }

            return maskBitmap;
        } catch (Exception e) {
            Log.d("dbg", e.getMessage());
            return null;
        }
    }