opencv实现图像缩放
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// scaleTransform.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include "cv.h"
#include "highgui.h"
//把图像缩放为原来的1/2
IplImage* doPyrDown(IplImage* in,int filter=IPL_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 _tmain(int argc, _TCHAR* argv[])
{
char* image="E:\\Demo.jpg";
IplImage* in=cvLoadImage(image);
cvNamedWindow("Example5_in",CV_WINDOW_AUTOSIZE);
cvNamedWindow("Example5_out",CV_WINDOW_AUTOSIZE);
IplImage* out=doPyrDown(in,IPL_GAUSSIAN_5x5);
cvShowImage("Example5_in",in);
cvShowImage("Example5_out",out);
cvWaitKey(0);
cvReleaseImage(&in);
cvReleaseImage(&out);
cvDestroyWindow("Example5_in");
cvDestroyWindow("Example5_out");
return 0;
}
//
#include "stdafx.h"
#include "cv.h"
#include "highgui.h"
//把图像缩放为原来的1/2
IplImage* doPyrDown(IplImage* in,int filter=IPL_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 _tmain(int argc, _TCHAR* argv[])
{
char* image="E:\\Demo.jpg";
IplImage* in=cvLoadImage(image);
cvNamedWindow("Example5_in",CV_WINDOW_AUTOSIZE);
cvNamedWindow("Example5_out",CV_WINDOW_AUTOSIZE);
IplImage* out=doPyrDown(in,IPL_GAUSSIAN_5x5);
cvShowImage("Example5_in",in);
cvShowImage("Example5_out",out);
cvWaitKey(0);
cvReleaseImage(&in);
cvReleaseImage(&out);
cvDestroyWindow("Example5_in");
cvDestroyWindow("Example5_out");
return 0;
}
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