How to calculate Multi Block DCT of an image where block size are 2x2; 4x4 and 8x8? Thanks

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Mohammad Manzurul Islam 2018-2-6

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评论： Mohammad Manzurul Islam 2018-2-6

Hi, I am trying to calculate MBDCT of a 2D gray image where block size is 2x2 or 4x4 or 8x8. I have used dct2 function before. But as far I understand, dct2 function calculates the entire image matrix. So can you please tell me how to code this? Thanks a lot for your kind guidance.

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Abhishek Ballaney 2018-2-6

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https://ww2.mathworks.cn/matlabcentral/answers/380967-how-to-calculate-multi-block-dct-of-an-image-where-block-size-are-2x2-4x4-and-8x8-thanks#answer_303678

https://in.mathworks.com/help/images/ref/dct2.html

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Mohammad Manzurul Islam 2018-2-6

As i said, I need to apply dct on blocks of image. For example, the blocks may be 2x2 or 4x4 or any other block size. And image can be of any size.

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