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opencv使用imageData读取像素值问题

2025-03-15 17:11:19

推荐回答（2个）

回答1：

IplImage* img=cvLoadImage(imageName);

cout<width<<","<height<<","<widthStep;
for(int y=0;yheight;y++)
{
unsigned char* p=(unsigned char*)(img->imageData+y*img->widthStep);
for(int x=0;xwidth*img->nChannels;x++)
{
printf("%d ",p[x]);
}

}
你为什么要改为int型呢，存储的是char，你使用int型导致寻址方式改变，访问了越界的内存。另外，你确定你的图像是单通道图像么？

回答2：

用CV_IMAGE_ELEM(src,uchar,y,x)

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