dct quantisation on image

Hello

I am writing code for dct image steganography. There I have divided the cover image into 8*8 block. later I subtracted 128 from each pixel value. Then how to apply quantization on each block?

thanks in advance

Answer 1

[SRI]

Hi Vaishali

Now go through the command blkproc(which is nothing but a block processing) just apply the 8x8 matrix into this block