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Re: [Bug-gsl] GSL Wavelet Transform

From: Brian Gough
Subject: Re: [Bug-gsl] GSL Wavelet Transform
Date: Wed, 12 Aug 2009 16:26:51 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI)

At Fri, 24 Jul 2009 12:38:10 +0100,
JIA Pei wrote:
> Probably, if you transformed more levels, you lost more data. Because
> wavelet can be looked on as a lossy compression, some times, if the users
> would like to analyze the compression ratio and the quality of the
> reconstructed images--- it's not that useful, but there might be such kind
> of requirements.
> So, is it possible that GSL affords the the "levels" as a public parameter?

I've made a note to export the dwt_step function in a future release.
For now, I would recommend just copying the dwt.c source file into
your application and modifying it, because it is self-contained.

Brian Gough
(GSL Maintainer)

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