Opencv 视频转为图像序列的实现

Z时代
2024-01-10
分类：IT

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 );
}