Need help about extracting a circular portion from image
Hello, I am quite new in OpenCV. I have an image with a faint white border marked with a red arrow as shown in the following link. I would like to find the circle. How to find it in OpenCV?
I doubt that houghCircles (http://docs.opencv.org/modules/imgproc/doc/feature_detection.html?highlight=houghcircle#houghcircles) will help you with your kind of picture, but you could try it.