尝试一下

     IplImage img;
     bmp = Bitmap.createBitmap(img.width(), img.height(), Bitmap.Config.ARGB_8888);

     bmp.copyPixelsFromBuffer(img.getByteBuffer());

     Mat mROI = new Mat(new Size(img.width(), img.height()), CV_8UC4);

     Utils.bitmapToMat(bmp, mROI);