ans :D
I assume this question asks to map an M x N image to binary gray scale image.
- We can think like we have to map MxN image (set of MN points) to binary space(2 points -0,1)
- We know between set A (having a elements) and set B (having b elements), there are b a distinct functions that can be formed.
- In our problem, we can form 2 MN functions.
- each function will be distinct images
Hence 2 MN distinct binary images can be made