Is there a way to detect ambiguous edges?

1. How can edge be detected?
2. Which algorithm is best for edge detection?
3. How can you detect edges with gradient filters?

How can edge be detected?

The search-based methods detect edges by first computing a measure of edge strength, usually a first-order derivative expression such as the gradient magnitude, and then searching for local directional maxima of the gradient magnitude using a computed estimate of the local orientation of the edge, usually the gradient ...

Which algorithm is best for edge detection?

Canny edge detection algorithm (Canny, 1986) known as optimal edge detection algorithm and the most commonly used edge detection algorithm in practice.

How can you detect edges with gradient filters?

Vertical edges can be detected by using a horizontal gradient operator followed by a threshold operation to detect the extreme values of the gradient. The gradient produces a doublet of extremes, positive-negative or negative-positive, depending on the direction of the transition.