Hello, I divide an image into 4x4 blocks, and I want to select 512 blocks and do some math on them and embed some information.

Hello,

I divide an image into 4x4 blocks, and I want to select 512 blocks and do some math on them and embed some information. And to extract the embedded information, I find the same blocks and the operation Do the extraction.

Thanks if anyone can help

Answer 1

[Image Analyst]

See the FAQ:

https://matlab.fandom.com/wiki/FAQ#How_do_I_split_an_image_into_non-overlapping_blocks.3F

Also see my attached demos.

[javad danesh]

Thanks for the help.