hough变换

// Hough.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "cv.h"
#include "cxcore.h"
#include "highgui.h"

int main(int argc, char* argv[])
{
	const char* filename="f:\\vc\\cv\\adc.jpg";
	IplImage* src=cvLoadImage(filename,0);
	IplImage* dst;
	IplImage* color_dst;
	CvMemStorage* storage=cvCreateMemStorage(0);
	CvSeq* lines=0;
	int i;
	if(!src)
		return -1;
	dst =cvCreateImage(cvGetSize(src),8,1);
	color_dst=cvCreateImage(cvGetSize(src),8,3);
	cvCanny(src,dst,50,200,3);
	cvCvtColor(dst,color_dst,CV_GRAY2BGR);
#if	0
	lines=cvHoughLines2(dst,storage,CV_HOUGH_STANDARD,1,CV_PI/180,100,0,0);
	for(i=0;itotal,100);i++)
	{
			float* line=(float*)cvGetSeqElem(lines,i);
			float rho=line[0];
			float theta=line[1];
			CvPoint pt1,pt2;
			double a=cos(theta),b=sin(theta);
			double x0=a*rho,y0=b*rho;
			pt1.x=cvRound(x0+1000*(-b));
			pt1.y=cvRound(y0+1000*(a));
			pt2.x=cvRound(x0-1000*(-b));
			pt2.y=cvRound(y0-1000*(a));
			cvLine(color_dst,pt1,pt2,CV_RGB(255,0,0),3,CV_AA,0);
	}
#else 
	lines=cvHoughLines2(dst,storage,CV_HOUGH_PROBABILISTIC,1,CV_PI/180,50,50,10);
	for(i=0;itotal;i++)
	{
		CvPoint* line=(CvPoint*)cvGetSeqElem(lines,i);
		cvLine(color_dst,line[0],line[1],CV_RGB(255,0,0),3,CV_AA,0);

	}
#endif
	cvNamedWindow("Source",1);
	cvShowImage("Source",src);
	cvNamedWindow("Hough",1);
	cvShowImage("Hough",color_dst);
	cvWaitKey(0);

	return 0;
}