Does anyone know anything about the two functions "dct2e" and "idct2e"?Where can I find their code?

Does anyone know anything about the two functions "dct2e" and "idct2e"? Where can I find their code? Thank you in advance for your suggestions!

Answer 1

[Wayne King]

This is a possibility:

http://www.mathworks.com/matlabcentral/fileexchange/21139-circular-convolution-using-dct-and-dst/all_files

[c befaro]

I have already tried it, but It doesn't work!

[Wayne King]

Can you be specific about what does not work? The link, the download, or the code that you download. The link appears to work for me. Obviously, I cannot speak for the code.

[c befaro]

I was speaking about the code.

Inside the code below there are the two functions I was talking about:

 http://www.damtp.cam.ac.uk/user/cbs31/Research_files/tvneghdode_4squaresplit.m

I can't get good results using this code with the previous suggestion regarding dct2e and idct2e.