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  • [学习OpenCV攻略][008][Canny边缘检测]

    cvGetSize(输入图片)

    得到输入图片的大小

    cvCanny(输入图片,输出图片,lowThresh,highThresh,aperture)

    把输入图片按设定光圈值进行Canny边缘检测,然后输出到输出图片中

    #include "cv.h"
    #include "highgui.h"
    
    IplImage *doCanny(IplImage *in, double lowThresh, double highThresh, double aperture){
    	if(in->nChannels != 1){
    		return NULL;
    	}
    	
    	IplImage *out = cvCreateImage(cvGetSize(in), in->depth, 1);
    	cvCanny(in, out, lowThresh, highThresh, aperture);
    	
    	return out;
    }
    
    int main(int argc, char **argv){
    	IplImage *img_rgb = cvLoadImage(argv[1]);
    	IplImage *img_gry = cvCreateImage(cvSize(img_rgb->width, img_rgb->height), img_rgb->depth, 1);
    	
    	cvCvtColor(img_rgb, img_gry, CV_BGR2GRAY);
    	
    	cvNamedWindow("gray", CV_WINDOW_AUTOSIZE);
    	cvNamedWindow("canny", CV_WINDOW_AUTOSIZE);
    	
    	cvShowImage("gray", img_gry);
    	
    	IplImage *img_cny = doCanny(img_gry, 10, 100, 3);
    	cvShowImage("canny", img_cny);
    	
    	cvWaitKey(0);
    	
    	cvReleaseImage(&img_cny);
    	cvReleaseImage(&img_gry);
    	cvReleaseImage(&img_rgb);
    	
    	cvDestroyWindow("canny");
    	cvDestroyWindow("gray");
    	
    	return 0;
    }
    
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  • 原文地址:https://www.cnblogs.com/d442130165/p/4920588.html
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