Image analysis for Signal processing help

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Gucci
Gucci 2022-5-1
回答： Sulaymon Eshkabilov 2022-5-1
Hello,
I have an image
How can I select a region of this image to crop out a 10x10 region of pixels and then display this on a figure window?
After this how can I perform a Discrete Cosine Transform (2D DCT) on it
and obtain the DCT coefficient values?
Thank you

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采纳的回答

Sulaymon Eshkabilov
Use imcrop()
How to use this function: >> doc imcrop

更多回答（1 个）

Sulaymon Eshkabilov
Using the Discrete Cosine Transform is quite straightforward. You'd need to employ dctmtx() fcn.
Help documentation:
doc dctmtx
Also, you can view this online documentation:
mathworks.com/help/images/discrete-cosine-transform.html

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