opencv 对输入视频做直方图均衡化

来源：互联网发布：电影同声翻译软件编辑：程序博客网时间：2024/06/06 01:00

作者：big tiger qq：517725908

以下程序首先读取摄像头的视频，然后转换到yuv空间，对Y进行直方图均衡化，在变回rgb空间，
int main( int argc, char** argv )
{
IplImage* eqlimage = NULL;
IplImage* yuvimage =NULL;
;
IplImage* yImage =NULL;
IplImage* uImage =NULL;
IplImage* vImage =NULL;
IplImage* pFrame =NULL;
CvCapture* pCapture =NULL;
int nFrmNum = 0;

cvNamedWindow("src",1);
cvNamedWindow("dst",2);

     pCapture = cvCreateCameraCapture(-1);
while (1)
{
   pFrame = cvQueryFrame(pCapture);
   nFrmNum++;

   if(1==nFrmNum)
   {
   eqlimage = cvCreateImage(cvGetSize(pFrame),pFrame->depth,3);
   yuvimage = cvCreateImage(cvGetSize(pFrame),pFrame->depth,3);

    yImage =cvCreateImage(cvGetSize(pFrame),pFrame->depth,1);
   uImage = cvCreateImage(cvGetSize(pFrame),pFrame->depth,1);
    vImage = cvCreateImage(cvGetSize(pFrame),pFrame->depth,1);
   }

   cvCvtColor(pFrame,yuvimage,CV_BGR2YCrCb);
   cvSplit(yuvimage, yImage,uImage,vImage,NULL);

   cvEqualizeHist(yImage,yImage);

    cvMerge(yImage,uImage,vImage,NULL,yuvimage);
   cvCvtColor(yuvimage,eqlimage,CV_YCrCb2BGR);


    cvShowImage("src",pFrame);
   cvShowImage("dst",eqlimage);
    if(cvWaitKey(37) == 27)
    {
     break;
    }


}
   cvDestroyWindow("src");
   cvDestroyWindow("dst");

   cvReleaseImage(&yImage);
   cvReleaseImage(&uImage);
   cvReleaseImage(&vImage);
   cvReleaseImage(&yuvimage);
   cvReleaseImage(&eqlimage);

cvReleaseCapture(&pCapture);
return 0;

}