OpenCv(1):简单的输入输出 分类： OpenCv 2014-08-28 16:27 100人阅读 评论(0) 收藏

今天开始学习OpenCv, 通过图像放缩和canny算子熟悉了一下怎么用OpenCv读入和显示图片，cvSize(cvGetSize(n))这一句总是报错，是说只有一个参数，书上的代码有点问题。

#include "cv.h"

#include "highgui.h"

void example2_4(IplImage* image){

cvNamedWindow("Example4-in");

cvNamedWindow("Example4-out");

cvShowImage("Example4-in", image);

IplImage* out= cvCreateImage(

cvGetSize(image),

IPL_DEPTH_8U,3

);

cvSmooth(image, out, CV_GAUSSIAN,3,3);

cvShowImage("Example4-out", out);

cvReleaseImage(&out);

cvWaitKey(0);

cvDestroyWindow("Example4_in");

cvDestroyWindow("Example4-out");

}

IplImage* cvPyrDown(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);

};

IplImage* doCanny(IplImage* in,double lowThresh,double highThresh,double aperture){

if(in->nChannels !=1)

return(0);

IplImage* out= cvCreateImage(

cvSize(in->width,in->height) ,

IPL_DEPTH_8U,

1

);

cvCanny(in,out,lowThresh,highThresh,aperture);

return(out);

};