OpenCV学习二十：canny 算子学习

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懒了，就这样吧

#include <opencv2/opencv.hpp>  
#include <stdio.h>  
#include <stdlib.h>  

using namespace cv;  
using namespace std;  

char file[] = "1.jpg";
int main(int argc, char** argv)  
{  
	Mat img = imread(file, -1);
	pyrDown(img, img, Size(img.cols/2, img.rows/2));
	imshow("1",img);

	Mat gray, canny, final;

	//转灰度 注意输入图像一定是8位灰度图像
	cvtColor(img, gray, CV_BGR2GRAY);

	//candy计算
	Canny(img, canny, 60, 150, 3, false);
	imshow("canny",canny);imwrite("canny.jpg",canny);

	final.create(img.size(), img.type());
	img.copyTo(final, canny);
	imshow("final", final);imwrite("final.jpg", final);
		
	waitKey();
	return 1;
}  

原图

gray

canny

final