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List:       koffice-devel
Subject:    Re: Review Request: Krita: Gaussian Blur Filter
From:       Jaroslaw S <kexipl () gmail ! com>
Date:       2009-12-19 9:59:04
Message-ID: 56a746380912190159k196b29e3i55dfc4f079a01724 () mail ! gmail ! com
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2009/12/19 Cyrille Berger <cberger@cberger.net>:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://reviewboard.kde.org/r/2369/#review3454
> -----------------------------------------------------------
> 
> 
> Out of curiosity, I wondered about the speed impact on using floats instead of \
> integers for convolution. But a bigger concern is why the use of "float" instead of \
> "double" (or "qreal") ? 
> Also, the UI for the gaussian blur mention the use of radius, I think it would \
> makes more sense to use sigma (as it was done in the krita-plugin, and in (future \
> version of) gimp), and compute the radius from the sigma. 

Hmm, you mean the visible string?
Sigma may be technically more correct, any idea why is radius widely used?

Photoshop: http://www.photoshopessentials.com/images/photo-effects/photo-templates/photoshop-gaussian-blur.jpg
 Corel Painter: http://www.wacom.com.au/previous/graphire4/img/tutorial/T4_003.jpg

-- 
regards / pozdrawiam, Jaroslaw Staniek
 Kexi & KOffice (http://www.kexi-project.org, http://www.koffice.org)
 KDE Libraries for MS Windows (http://windows.kde.org)
 http://www.linkedin.com/in/jstaniek
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