code: public Bitmap asBitmap(INDArray array, int dataType) {
          return converter2.convert(asFrame(array, dataType));
      }
docs: Converts an INDArray to a Bitmap. Only intended for images with rank 3.
  
  @param array to convert
  @param dataType from JavaCV (DEPTH_FLOAT, DEPTH_UBYTE, etc), or -1 to use same type as the INDArray
  @return data copied to a Frame