c++、opencv处理视频的内存泄漏问题

C语言 码拜 7年前 (2015-11-26) 1420次浏览
// OpenCVFindContours.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"  
#include "cxcore.h"   
#include "cv.h"   
#include "highgui.h"  
int _tmain(int argc, _TCHAR* argv[])
{
	CvCapture* pCapture = cvCreateCameraCapture(0);
	IplImage * pFrame;
	IplImage *psrc;
	IplImage *src = cvCreateImage(cvSize(700,700), IPL_DEPTH_8U,3);
	IplImage *gsrc = cvCreateImage(cvGetSize(src), IPL_DEPTH_8U,1);

	IplImage *dsw ;
	IplImage *dst;
	CvMemStorage *storage;
	CvSeq *first_contour;

	while(1)
	{
		psrc=cvQueryFrame(pCapture ); 

		cvResize(psrc,src,1);
		cvCvtColor(src,gsrc,CV_BGR2GRAY);
		dsw = cvCreateImage(cvGetSize(src), 8, 1);  
		dst = cvCreateImage(cvGetSize(src), 8, 3);
		storage = cvCreateMemStorage(0);  
		first_contour = NULL;  
		//turn the src image to a binary image  
		//cvThreshold(src, dsw, 125, 255, CV_THRESH_BINARY_INV);  
		cvThreshold(gsrc, dsw, 100, 255, CV_THRESH_BINARY);  
		cvFindContours(dsw, storage, &first_contour, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE);  
		cvZero(dst);  
		int cnt = 0;  
		for(; first_contour != 0; first_contour = first_contour->h_next)  
		{  
			cnt++;  
			CvScalar color = CV_RGB(rand()&255, rand()&255, rand()&255);  
			cvDrawContours(dst, first_contour, color, color, 0, 2, CV_FILLED, cvPoint(0, 0));  
			CvRect rect = cvBoundingRect(first_contour,0);
			cvRectangle(dst, cvPoint(rect.x, rect.y), cvPoint(rect.x + rect.width, rect.y + rect.height),CV_RGB(255, 0, 0), 1, 8, 0);
		}  
		printf("the num of contours : %d\n", cnt);  
		cvNamedWindow( "Source", 1 );  
		cvShowImage( "Source", src );  
		cvNamedWindow( "dsw", 1 );  
		cvShowImage( "dsw", dsw );  
		cvNamedWindow( "Components", 1 );  
		cvShowImage( "Components", dst );  
	cvReleaseMemStorage(&storage);
		char c=cvWaitKey(10);
		if(c==27)
			break;
	}
	cvDestroyWindow("Source");
	cvDestroyWindow("dsw");
	cvDestroyWindow("Components");
	cvReleaseImage(&pFrame);
	cvReleaseImage(&gsrc);
	cvReleaseImage(&src);
	cvReleaseImage(&dsw);
	cvReleaseImage(&dst);
	//cvReleaseMemStorage(&storage);
	cvReleaseCapture(&pCapture);
	return 0;  
}

求寻找内存泄漏之处~

解决方案:40分
 
int main(int argc, char * argv[])
{
    CvCapture* pCapture = cvCreateCameraCapture(0);
    IplImage * pFrame;
    IplImage *psrc;
    IplImage *src = cvCreateImage(cvSize(700,700), IPL_DEPTH_8U,3);
    IplImage *gsrc = cvCreateImage(cvGetSize(src), IPL_DEPTH_8U,1);
     
    IplImage *dsw ;
    IplImage *dst;
    CvMemStorage *storage;
    CvSeq *first_contour;
     
    while(1)
    {
        psrc=cvQueryFrame(pCapture ); 
         
        cvResize(psrc,src,1);
        cvCvtColor(src,gsrc,CV_BGR2GRAY);
 
        dsw = cvCreateImage(cvGetSize(src), 8, 1);  
        dst = cvCreateImage(cvGetSize(src), 8, 3);
 
        storage = cvCreateMemStorage(0);  
        first_contour = NULL;  
 
        //turn the src image to a binary image  
        //cvThreshold(src, dsw, 125, 255, CV_THRESH_BINARY_INV);  
        cvThreshold(gsrc, dsw, 100, 255, CV_THRESH_BINARY);  
 
        cvFindContours(dsw, storage, &first_contour, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE);  
        cvZero(dst);  
        int cnt = 0;  
        for(; first_contour != 0; first_contour = first_contour->h_next)  
        {  
            cnt++;  
            CvScalar color = CV_RGB(rand()&255, rand()&255, rand()&255);  
            cvDrawContours(dst, first_contour, color, color, 0, 2, CV_FILLED, cvPoint(0, 0));  
            CvRect rect = cvBoundingRect(first_contour,0);
            cvRectangle(dst, cvPoint(rect.x, rect.y), cvPoint(rect.x + rect.width, rect.y + rect.height),CV_RGB(255, 0, 0), 1, 8, 0);
        }  
 
        printf("the num of contours : %d\n", cnt);  
 
        cvNamedWindow( "Source", 1 );  
        cvShowImage( "Source", src );  
 
        cvNamedWindow( "dsw", 1 );  
        cvShowImage( "dsw", dsw );  
 
        cvNamedWindow( "Components", 1 );  
        cvShowImage( "Components", dst );  
 
		cvReleaseMemStorage(&storage);

		cvReleaseImage(&dsw);  // 应移至此处
		cvReleaseImage(&dst); // 应移至此处
 
        char c=cvWaitKey(10);
        if(c==27)
            break;   
    }
 
    cvDestroyWindow("Source");
    cvDestroyWindow("dsw");
    cvDestroyWindow("Components");
 
    //~ cvReleaseImage(&pFrame); //cvReleaseCapture会释放,千万别自己处理
    cvReleaseImage(&gsrc);
    cvReleaseImage(&src);
    
 
    //cvReleaseMemStorage(&storage);
    cvReleaseCapture(&pCapture);
 
    return 0;  
}

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