How do I select and produce a 8x8 pixel region of an original image as a new image?

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Clement Chua
Clement Chua on 5 Dec 2020
Answered: Keerthana Chiruvolu on 8 Dec 2020
I need to select an 8 pixel by 8 pixel region of the image from an interesting area of the image and perform 2D DCT on it.

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Answers (1)

Keerthana Chiruvolu
Keerthana Chiruvolu on 8 Dec 2020
Hi,
You can use the imcrop() function to crop the region of interest an image, and perform 2-D DCT using dct2() function. Alternately, you may also select the region of interest by specifying the rows and columns parameters of the dct2() function.

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