opencv获取摄像头

因为比较常用，记下：

#include "stdafx.h"

#include <cv.h>

#include <cxcore.h>

#include <highgui.h>

void main( int argc, char** argv )

{

//声明IplImage指针

IplImage* pFrame = NULL;

//获取摄像头

CvCapture* pCapture = cvCreateCameraCapture(0);

//创建窗口

cvNamedWindow("video", 1);

//显示视屏

while(1)

{

pFrame=cvQueryFrame( pCapture );

if(!pFrame)break;

cvShowImage("video",pFrame);

char c=cvWaitKey(500);

if(c==27)break;

}

cvReleaseCapture(&pCapture);

cvDestroyWindow("video");

}