Opencv 視頻轉為圖像序列

Opencv 視頻轉為圖像序列

基於OpenCV的視頻轉為圖像序列方法：

#include 

#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;
}

#include 

#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 );
}

測試數據為OpenCV自帶的視頻：Megamind.avi，可以在opencv\sources\samples\cpp\tutorial_code\HighGUI\video-input-psnr-ssim\video路徑下查找，共270幀圖像，運行結果部分截圖如下：