问题
I'm currently working on image processing project and I need to detect edges from image. I thought to use canny edge detection for detect lines of the image, So i searched about canny edge detection using javacv on internet and I found some tutorials which gives the basic idea about canny edge detection technique but I could not be able to find any sample code regarding this. Please can someone provide simple sample edge detection code ?
It’s really appreciate if you can provide code example for following image.
回答1:
For canny edge detection you need to perform like following.
IplImage gray = ...
cvCvtColor(colored, gray, CV_RGB2GRAY);
cvSmooth( gray, smooth, CV_BLUR, 9, 9, 2, 2);
cvThreshold(gray,gray, 155, 255, CV_THRESH_BINARY);
cvCanny( gray, gray, lowThreshold, highThreshold, aperature_size );
Check this Question and Answer for more detail
来源：https://stackoverflow.com/questions/12994612/how-to-do-canny-edge-detection-in-javacv-opencv