<span style="font-size:14px;">#include <opencv\cv.h>#include <opencv\highgui.h>#include <stdio.h>int main( int argc, char** argv ){IplImage* pFrame = NULL;IplImage* pFrImg = NULL;IplImage* pBkImg = NULL;CvMat* pFrameMat = NULL;CvMat* pFrMat = NULL;CvMat* pBkMat = 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);//打开视频文件if( !(pCapture = cvCaptureFromFile("video.avi")) ){fprintf(stderr, "Can not open video file video.avi\n");return -2;}//逐帧读取视频while(pFrame = cvQueryFrame( pCapture )){nFrmNum++;// 第一帧需要申请内存并初始化if(nFrmNum == 1){pBkImg = cvCreateImage(cvSize(pFrame->width, pFrame->height),IPL_DEPTH_8U,1);pFrImg = cvCreateImage(cvSize(pFrame->width, pFrame->height),IPL_DEPTH_8U,1);pBkMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);pFrMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);pFrameMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);// 转换为单通道图像再处理cvCvtColor(pFrame, pBkImg, CV_BGR2GRAY);cvCvtColor(pFrame, pFrImg, CV_BGR2GRAY);cvConvert(pFrImg, pFrameMat);cvConvert(pFrImg, pFrMat);cvConvert(pFrImg, pBkMat);}else{cvCvtColor(pFrame, pFrImg, CV_BGR2GRAY);cvConvert(pFrImg, pFrameMat);// 高斯滤波平滑图像cvSmooth(pFrameMat, pFrameMat, CV_GAUSSIAN, 3, 0, 0);// 当前帧与背景图相减cvAbsDiff(pFrameMat, pBkMat, pFrMat);// 二值化背景图cvThreshold(pFrMat, pFrImg, 60, 255.0, CV_THRESH_BINARY);//进行形态学滤波，，去除噪声. 效果不好,将行车都作为噪声去除了//cvErode(pFrImg, pFrImg, 0, 1);//cvDilate(pFrImg, pFrImg, 0, 1);// 更新背景cvRunningAvg(pFrameMat, pBkMat, 0.003, 0);// 将背景转换为图像格式，用于显示cvConvert(pBkMat, pBkImg);cvShowImage("video", pFrame);cvShowImage("background", pBkImg);cvShowImage("foreground", pFrImg);if( cvWaitKey(2) >= 0 )break;}}cvDestroyWindow("video");cvDestroyWindow("background");cvDestroyWindow("foreground");cvReleaseImage(&pFrImg);cvReleaseImage(&pBkImg);cvReleaseMat(&pFrameMat);cvReleaseMat(&pFrMat);cvReleaseMat(&pBkMat);return 0;}</span>
运行结果截图：
业精于勤，荒于嬉；行成于思，毁于随。
