Edge

Which sigma to use for edge detection

Which sigma to use for edge detection
  1. What is Sigma edge detection?
  2. Which algorithm is best for edge detection?
  3. Which derivative is used for edge detection?
  4. Which filters can be used for edge detection?

What is Sigma edge detection?

The parameter sigma allows to control how detailed the detection of the edges should be. Try to change its value to see what happens. We will use a model called canny with the function canny() of the skimage library.

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.

Which derivative is used for edge detection?

The 2nd derivative of an image where the image highlights regions of rapid intensity change and is therefore often used for edge detection zero crossing edge detectors.

Which filters can be used for edge detection?

The Canny filter is a multi-stage edge detector. It uses a filter based on the derivative of a Gaussian in order to compute the intensity of the gradients. The Gaussian reduces the effect of noise present in the image.

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