Question

OpenCV提取IplImage图像数据问题

void cannyEdge(IplImage* image)
{

IplImage *gray = 0;
IplImage *edge = 0;
IplImage *cedge = 0;

//create the output image
cedge = cvCreateImage(cvSize(image->width,image->height),IPL_DEPTH_8U,3);

//convert to grayscale
gray = cvCreateImage(cvSize(image->width,image->height),IPL_DEPTH_8U,1);
edge = cvCreateImage(cvSize(image->width,image->height),IPL_DEPTH_8U,1);

//cvSmooth(image,image);
cvCvtColor(image,gray,CV_BGR2GRAY);

//deal with the image
// cvSmooth(gray,gray,CV_BLUR,3,3,0,0);
cvNot(gray,edge);

//run the edge detector on grayscale
cvCanny(gray,edge,(float)100,(float)300,3);

//copy edge points
cvCopy(image,cedge,edge);

int w=0,h=0,i,j;
unsigned char *data;
//data=reinterpret_cast<unsigned char *>(img->imageData);
data= (unsigned char*)(edge->imageData);
w=edge->width;
h=edge->height;
for(j=0;j<h;j++)
{
for(i=0;i<w;i++)
{
cout<<data[w*j+i];
}
cout<<endl;
}

//show the edge
cvNamedWindow( "edge", 1 );//创建窗口
cvShowImage("edge",edge);//显示图像

}
这段代码是Canny边缘检测，然后我想提取edge中的数据进行处理，但却提不出数据，刚学OpenCV，求指教。并且这种方法
unsigned char *data;
//data=reinterpret_cast<unsigned char *>(img->imageData);
data= (unsigned char*)(edge->imageData);
怎么提出的都是乱码字符呢？

Answer 1

你cvShowImage显示边沿正确吗，如果显示正确那应该是你输出每个像素的数据格式的问题。