[FFmpeg-devel] [PATCH 7/7] avfilter: add afwtdn filter

[Paul B Mahol]

On 7/23/20, Valentin Schweitzer <valentin.schweitzer98 at gmail.com> wrote:
> On 12/06/2020 00:58, Nicolas George wrote:
>> Paul B Mahol (12020-06-12):
>>> FFmpeg is not math encyclopedia.
>> You did not type these numbers, you took them from somewhere. Include it
>> in the source code, where it belongs.
>
> I am not familiar with the entirety of this commit, but this
> seems to concern wavelet coefficients. I think linking a source
> for these coefficients that leads to further documentation instead
> of including this in the source code is a good idea.
>
> For anyone looking for such a source,
> http://wavelets.pybytes.com/wavelet/sym2/
> offers a list of (rounded) coefficients (the specific link is for Symlets
> 2).
> Paul seems to have a source for either a more accurate list or the formulas
> to
> calculate these values. Linking this in the source might be really helpful
> for
> quick debugging or adapting the code later.
>
> I hope this comment was helpful in any way,

LOL, very very funny. Site have javascript copy to copy coefficients,
and yes for almost all wavelets
I used that site as source.

>
> -Valentin
>
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