Convert Opencv videos to Image Sequences
The following describes how to convert videos into Image Sequences Based on OpenCV:
Based on C ++
#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;}
C-based
#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 );}
The test data is the video that comes with OpenCV: Megamind. avi, which can be found inopencv\sources\samples\cpp\tutorial_code\HighGUI\video-input-psnr-ssim\video
Search for a total of 270 images in the path. The running result is as follows: