divide an image to blocks

hi i have an 256*256 image and i want to divide it to 8*8 blocks without overlapping and then calculate DCT for each blocks. how to do it?please help me

1 件のコメント

Geoff Hayes
Geoff Hayes 2014 年 10 月 31 日
Nadia - if you have the Image Processing Toolbox, you should check the example from here DCT with blockproc.

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回答 (1 件)

Image Analyst
Image Analyst 2014 年 11 月 1 日

0 投票

There are code samples in the FAQ using two different methods, mat2cell() and regular indexing. That just gives you the subimages. You can call a function on them if you want to process each subimage. If you want to use blockproc(), see my attached demos.

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2014 年 10 月 31 日

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2014 年 11 月 1 日

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