how are number of edges differ from one edge detecting method to another?

on basis of what parameter edges can be identified in an imge? and what makes different in number of edges from each edge detecting methods like canny,sobel and fuzzy?

[Adam]

Simplest option is to try each one and find out!

Answer 1

[Image Analyst]

They use different algorithm so of course they're not going to agree on every single pixel. You can look up the precise algorithms online if you want - no sense in me explaining them, or copying and pasting the descriptions here, when you can just look them up.

Answer 2

[jagadeesh gondela]

how can i get count of total number of edges in an image? Is there any code for that?

[Image Analyst]

If you like the edges that your algorithm gives you, then you can count them with bwlabel():

[~, numEdges] = bwlabel(binaryImage);