What methods for finding the edges of an image do you know?

Question

Algorithms

What methods for finding the edges of an image do you know?

• Sobel
• gradient method
• Canni
• Pruitt
• Sharr(Sharr)
• Robets
• Binarization (added)

Maybe someone else knows something, because. soon it will be necessary to do a review, I would like to hear, maybe someone else knows the methods ... Thanks in advance.

Answer 1

Border highlighting

Answer 2

It’s a pity, well, I’ll add more binarization ... is that all?

Answer 3

In general, what is meant by the selection of boundaries? Filtering that emphasizes contours or an analytical algorithm that highlights the boundaries of objects? The second does not always require the first. You have filters here. As analytical algorithms - well, at least Hough transformations or wavelet analysis with a set of required primitives.

Answer 4

Phase congruency edge detection. The Australian scientist Peter Kovesi wrote on this topic. His work is easily found online.
I'm trying to implement this method now, I even achieved some success, but I'm not sure that I'm doing everything right. I can give source codes (C++, OpenCV).