Hello Mady Madhu.

Specializations for M.Tech CSE are Artificial Intelligence, Image Processing, Data Analytics and Security.

I would suggest you to go for Image Processing as it has a very great scope in future in comparison to others. Artifical Intelligence and Data Analytics are in scope for now a days but with the increasing trends and other factors, Image Processing is of greater scope. Do look at you interest. That matters the most. 

Hope it helps you.