Re: bug #464466: lanczos "corner" artifacts

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On Thu, 07 Aug 2008 22:20:00 +0200, Nicolas Robidoux  
<nrobidoux@xxxxxxxxxxxxxxxx> wrote:

> A student of mine and I have put together a gimp plug-in which ENLARGES  
> images using a method which is analogous to global cubic splines, that  
> is, which gives results analogous to lanczos.


Hi,

in what way do you mean the results are analogous to lancsoz?

Could you perhaps compare results of your plugin with the comparitive  
results on the kingfisher head shot?

http://svenfoo.org/scaletest/133-9.html
http://svenfoo.org/scaletest/133Z8g.png
http://svenfoo.org/scaletest/133C8g.png
and/or the pixel graphic:

http://svenfoo.org/scaletest/133-8.html
http://svenfoo.org/scaletest/133Z8g.png
http://svenfoo.org/scaletest/133C8g.png

these two images scaled to 133% seemed to be the best cases in that test  
group for differentiating cubic and lancsoz. It would be interesting to  
see your plugin results next to those tests. The originals are provided on  
those html pages.



regards.


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