opencv:图像变换

#include "cv.h"#include "highgui.h"int main(int argc,char** argv){    IplImage* img = cvLoadImage("E:/opencv/1.jpg");    IplImage* out = cvCreateImage(cvSize(img->width/2,img->height/2),img->depth,img->nChannels);    cvNamedWindow("Example4_in",CV_WINDOW_AUTOSIZE);    cvNamedWindow("Example4_out",CV_WINDOW_AUTOSIZE);    cvShowImage("Example4_in",img);    cvPyrDown(img,out);    cvShowImage("Example4_out",out);    cvWaitKey(0);    cvReleaseImage(&img);    cvReleaseImage(&out);    cvDestroyWindow("Example4_in");    cvDestroyWindow("Example4_out");}