how to divide into blocks of 8x8 pixels?

4 vues (au cours des 30 derniers jours)
dian
dian le 10 Oct 2013
I have project "A Robust Digital Watermarking with Mixed Transform Technique for Digital Image".
There are two attachtment, the sourecode I made, and the embedding and extraction watermark process.
I've done the DWT process, and have problem with dividing into blocks of 8x8 pixels. Can you help me?
  1 commentaire
sixwwwwww
sixwwwwww le 10 Oct 2013
Dear dian, attachments are missing. Try again attaching your code files

Connectez-vous pour commenter.

Réponses (3)

Matt J
Matt J le 11 Oct 2013
One way using MAT2TILES ( Available Here )
>> A=rand(24); mat2tiles(A,[8,8])
ans =
[8x8 double] [8x8 double] [8x8 double]
[8x8 double] [8x8 double] [8x8 double]
[8x8 double] [8x8 double] [8x8 double]

Image Analyst
Image Analyst le 11 Oct 2013

Spandan Tiwari
Spandan Tiwari le 11 Oct 2013
The function blockproc in the Image Processing Toolbox maybe a natural fit if you would like to do process the image in blocks.

Catégories

En savoir plus sur Wavelet Toolbox dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by