Hough Circles
cv::HoughCircles is an OpenCV function that detects circles in an image using the Hough Circle Transform (based on the gradient method).
Download TouchDesigner version on my Patreon
It is fast and quite reliable when edge detection is clean, but it is very sensitive to parameter tuning (especially minDist, param1, param2, and minRadius/maxRadius).
ScriptOP using TOP texture as input and output lines coordinates as CHOP:
