Hough变换检测直线

void ImageProcess::LineHghChg(CDC *pDC,Image *Edge)
 {
 int lHeight = Edge->m_height;
 int lWidth = Edge->m_width;
 int iRow,iCol;
 int radius,angle,x,y;
 double a;
 int d;
 int temp[360][1000]={0};
 d=int(sqrt(lHeight*lHeight+lWidth*lWidth));
 double p=3.1415926/180;
 
 for (iRow=0;iRow<lHeight;iRow++)
 {
 for (iCol=0;iCol<lWidth;iCol++)
 {
 if (Edge->pData[iRow][iCol] == 255)
 {
 x=iCol;
 y=iRow;
 
 for (angle=0;angle<360;angle++)
 {
 a=angle*p;
 radius=int((double)x*cos(a)+(double)y*sin(a));
 temp[angle][radius]++;
 }
 
 }
 }