Questions tagged [houghcircles]

I'm doing a simple circle detection with HoughCircles, for a clock, no matter how I change the parameters, the circle detection never works correctly, I tried to extra blurring and no use. The input image is this: The output circle is this : The…

I am trying to detect the circles on some lunar craters images. Here are some examples: After binarization, closing operation and removing noise, I ended up with such results: I am now trying to fit the circles to the binarized images. I've…

I have a 17x18 image: Mat src = (Mat_(17, 18) << 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …

i want to detect the radius of two circles in mask image, but cv2.HoughCircles can not detect these two circles. what should i do? thanks in advance. here is the code: import cv2 import numpy as np track_win = 'Tracking' def nothing(x): pass …