dct quantisation on image
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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
回答（1 个）
SRI
2014-11-6
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Hi Vaishali
Now go through the command blkproc(which is nothing but a block processing) just apply the 8x8 matrix into this block
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