Opencv 视频转为图像序列的实现
时间：2021-07-15 09:30:40|栏目：C代码|点击： 次
基于OpenCV的视频转为图像序列方法：
基于C++版本
#include <iostream>
#include "cv.h"
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
void main()
{
VideoCapture cap("C:\\Users\\Leo\\Desktop\\Megamind.avi");
if ( !cap.isOpened() )
{
return ;
}
int imgIndex(0);
for ( ; ; )
{
Mat frame;
cap >> frame;
if ( frame.empty() )
{
break;
}
char* imageSaveName = new char[64];
sprintf( imageSaveName, "C:\\Users\\Leo\\Desktop\\new\\%05d.jpg", imgIndex );
imwrite( imageSaveName, frame );
delete[] imageSaveName;
imgIndex++;
}
cout << "total frames: " << imgIndex << endl;
}
基于C版本
#include <iostream>
#include "cv.h"
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
void main()
{
// video read
CvCapture *capture = cvCreateFileCapture("C:\\Users\\Leo\\Desktop\\Megamind.avi");
IplImage *frame;
int imgIndex(0);
while(1)
{
frame = cvQueryFrame(capture);
if ( !frame )
{
break;
}
char* imageSaveName = new char[64];
sprintf( imageSaveName, "C:\\Users\\Leo\\Desktop\\new\\%05d.jpg", imgIndex );
cvSaveImage( imageSaveName, frame );
delete[] imageSaveName;
imgIndex++;
}
cout << "total frames: " << imgIndex << endl;
cvDestroyWindow( "VideoImage" );
cvReleaseCapture( &capture );
cvReleaseImage( &frame );
}
测试数据为OpenCV自带的视频：Megamind.avi，可以在opencv\sources\samples\cpp\tutorial_code\HighGUI\video-input-psnr-ssim\video路径下查找，共270帧图像，运行结果部分截图如下：
