用OpenCV调整视频大小

用OpenCV调整视频大小

// videoProcess.cpp : 定义控制台应用程序的入口点。
//

#include"stdafx.h" 
#include <stdio.h> 
#include <cv.h> 
#include <highgui.h> 

int main(int argc, char *argv[]) 
{ 
 CvCapture* capture = cvCaptureFromAVI("D:\\video\\sunglass\\day\\x12.avi"); 

IplImage* frame = 0; 

int isColor = 1;   
 int fps    = 25; // or 25
 CvVideoWriter *writer = cvCreateVideoWriter("D:\\video\\sunglass\\day\\xx12.avi",CV_FOURCC('X','V','I','D'),fps,cvSize(640,480),isColor);   

cvNamedWindow( "vivi"); 
 //读取和显示 
 while(1) 
 { 
  frame = cvQueryFrame(capture); //获取一帧图片 
  if(frame == NULL) 
   break; 

CvSize dstSize = cvSize(frame->width * 2, frame->height * 2);
  IplImage *dst = cvCreateImage(dstSize, frame->depth, frame->nChannels);

cvResize( frame, dst, CV_INTER_LINEAR );
  cvShowImage( "vivi", dst ); //将其显示 
  char key = cvWaitKey(10); 
 
  cvWriteFrame(writer, dst);
  frame = NULL;
  cvReleaseImage(&dst);
 } 

cvReleaseVideoWriter(&writer);   
 cvDestroyWindow("vivi"); 

return 0; 
} 

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Ubuntu Linux下安装OpenCV2.4.1所需包

Ubuntu 12.04 安装 OpenCV2.4.2

CentOS下OpenCV无法读取视频文件

Ubuntu 12.04下安装OpenCV 2.4.5总结

Ubuntu 10.04中安装OpenCv2.1九步曲

基于QT和OpenCV的人脸识别系统

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OpenCV的详细介绍：请点这里
OpenCV的下载地址：请点这里