cvGaussBGModel

int _tmain(int argc, _TCHAR* argv[]) {IplImage* pFrame = NULL;      IplImage* pFrImg = NULL;    IplImage* pBkImg = NULL;      CvCapture* pCapture = NULL;      int nFrmNum = 0;    cvNamedWindow("video", 1);    cvNamedWindow("background",1);    cvNamedWindow("foreground",1);      cvMoveWindow("video", 30, 0);    cvMoveWindow("background", 360, 0);    cvMoveWindow("foreground", 690, 0);   /*if( argc > 2 )      {           fprintf(stderr, "Usage: bkgrd [video_file_name]\n");           return -1;      }*/     ////打开视频文件    //   if( !(pCapture = cvCaptureFromFile(""))        //   {      //      cerror("cannot open the file\n");      //      return -2;        //   }   //打开摄像头       if( !(pCapture = cvCaptureFromCAM(0)))           {            fprintf(stderr, "Can not open camera.\n");            return -2;           }                    //初始化高斯混合模型参数   CvGaussBGModel* bg_model=NULL;    while(pFrame = cvQueryFrame( pCapture ))      {           nFrmNum++;                 if(nFrmNum == 1)         {             pBkImg = cvCreateImage(cvSize(pFrame->width, pFrame->height),  IPL_DEPTH_8U,3);            pFrImg = cvCreateImage(cvSize(pFrame->width, pFrame->height),  IPL_DEPTH_8U,1);                //高斯背景建模，pFrame可以是多通道图像也可以是单通道图像          //cvCreateGaussianBGModel函数返回值为CvBGStatModel*，          //需要强制转换成CvGaussBGModel*         bg_model = (CvGaussBGModel*)cvCreateGaussianBGModel(pFrame, 0);      }           else      {                     //更新高斯模型        cvUpdateBGStatModel(pFrame, (CvBGStatModel *)bg_model );          //pFrImg为前景图像，只能为单通道         //pBkImg为背景图像，可以为单通道或与pFrame通道数相同         cvCopy(bg_model->foreground,pFrImg,0);            cvCopy(bg_model->background,pBkImg,0);          //把图像正过来         pBkImg->origin=1;        // pFrImg->origin=1;            cvShowImage("video", pFrame);             cvShowImage("background", pBkImg);             cvShowImage("foreground", pFrImg);                if( cvWaitKey(2) >= 0 )                  break;           }         }    //释放高斯模型参数占用内存      cvReleaseBGStatModel((CvBGStatModel**)&bg_model);   cvDestroyWindow("video");    cvDestroyWindow("background");    cvDestroyWindow("foreground");      cvReleaseImage(&pFrImg);    cvReleaseImage(&pBkImg);      cvReleaseCapture(&pCapture);      return 0;}