opencv中如何利用mat来获取连续内存的图像区域，并改变形状

                cv::Mat patch ;
patch.create(patch_size,patch_size,srcImage.type());
srcImage(patchRect).copyTo(patch);
cv::Mat reshapePatch;
if(patch.isContinuous())
{
reshapePatch = patch.reshape(0,1);  
}
patch.release();