Opencv 视频转为图像序列的实现

2020-01-26 13:22:30

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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：