how to capture the local similarity and register the number of pixels that are similar to its neighbors in matlab

For each pixel that is similar in features to its neighbors

Answer 1

[Image Analyst]

Please define "similarity" and "features" and what exact form of output you'd like.

[Sheema Khattak]

Similarity between a pixel and its neighbors within a window of size 5. secondly what is the role of Euclidean distance in image processing?

[Image Analyst]

Please read my answer again.

Euclidean distance is the distance between two points. What else do you want to know. It's used in lots of places - too many to list. That's like asking "how is the square root used in math?" You can't expect an answer to that.

[Sheema Khattak]

I actually need to work on this kindly I need to know that can I implement this idea in matlab? Kindly refer to the 2,2.1 and 2.2 section of the paper.