how to write a code in matlab to segment the characters using the watershed algorithm?

I'm purely new to matlab application so please tell how to segment these characters using WATERSHED algorithm

[Walter Roberson]

Duplicates https://www.mathworks.com/matlabcentral/answers/339214-anyone-knows-how-to-write-a-function-in-matlab-to-segment-the-characters-using-the-watershed-algorit

[DB]

Sorry for that ..! Some one said question is not in proper way that's why i'm rewrite the question and please tell me how to do this ?