OpenCV学习05

输出图像的高和宽为原图像的一半

//
//  main.cpp
//  Study05
//
//  Created by Sean on 16/2/18.
//  Copyright © 2016年 Sean. All rights reserved.
//

#include <iostream>
#include "highgui.h"

using namespace std;

IplImage* doPyrdown(IplImage* in,int filter = CV_GAUSSIAN_5x5)
{
    //assert(in->width%2==0 && in->height%2==0);
    IplImage* out=cvCreateImage
    (
     cvSize(in->width/2,in->height/2),
     in->depth,
     in->nChannels
     );
    cvPyrDown(in, out);
    return out;
}

int main(int argc, const char * argv[]) {
    // insert code here...
    cout << "Hello, World!\n";
    IplImage* in = cvLoadImage("/Users/sean/Pictures/11.png");
    cvNamedWindow("Example05_re");
    cvNamedWindow("Example05_af");
    cvShowImage("Example05_re", in);
    cvShowImage("Example05_af", doPyrdown(in));
    while(cvWaitKey(0)!=27);
    cvReleaseImage(&in);
    cvDestroyAllWindows();
    return 0;
}