OpenCV Best method to automatically draw a straight line through points

Question

what OpenCV Python tool would be the best to draw a straight line between multiple 'points' on an image ? Something like a BestFitLine but for thresoldedimage, not a plot

Thanks

source image

processed image (binary threshold) the black dot are supposed to be each individual crop

what I'd like to have

Answer 1

I'm afraid Hough Lines will fail here. You could try ransac to get best estimated line, erase those points and run next ransac . Tough you still can encounter some troubles: exactly how many clusters do you want to recognize? You could set min score sample score for a line model. You'd also need to filter out horizontal lines.

There're ransac implementations in both scikit-learn and scikit-image .

Answer 2

如果您还没有尝试过，请使用 OpenCV 函数HoughLines()和HoughLinesP()来检测图像中的线条。