int main()
{
Mat img = imread("img.jpg");
Mat pic(512,512, CV_32FC1),tem,result;
img.convertTo(tem, CV_32FC1);
for (int r = 0; r < 512; r++)
for (int c = 0; c < 512; c++)
pic.ptr<float>(r)[c] = tem.ptr<float>(r)[c];
pic.convertTo(result, CV_8UC1);
imshow("img", img);
imshow("result",result);
waitKey();
return 0;
}
为什么结果图片只是原来的一部分,而且明显变形