[scilab-Users] Discrete cosine transform

[Serge Steer]

Le 31/01/2012 17:14, grivet a écrit :
> Hello,
> The discrete cosine transform is often used in image processing and in 
> some versions of Fourier transform spectroscopy. Does such a function 
> exist in Scilab?  Are there any plans to implement it?
> The DCT (and DST, the discrete sine transform) are available in FFTW 
> but it would be convenient if they were directly callable in Scilab.
> Failing that, doesnanybody have a ready made version of these 
> transforms built on fft?
> Thanks in advance for your suggestions
> JP Grivet
>
>
>
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I am currently working to improve fftw interface in Scilab to take into 
account the symmetry of the data. I have also in mind to add the DCT and 
DST function based on the fftw procedures.

Serge Steer
INRIA