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[Bug 648379] Re: Artifacts when scaling down with Sinc Lanczos3

To: edubuntu-bugs@xxxxxxxxxxxxxxxxxxx
From: Harenome Ranaivoarivony Razanajato <kshegzyaj@xxxxxxxxx>
Date: Sat, 11 Jun 2011 06:48:24 -0000
Reply-to: Bug 648379 <648379@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I can confirm that resizing at 1/5 of the original size can cause the
appearance of some artifacts.

I have tried with the sizes you have been using, and with an original size of 1000x1000.
I have also tried with a 1200x1200 picture resized to 200x200, and the same problem occurs. Maybe the range is wider than you thought, as it also happens around a 1/6 ratio.

Also, it seem to occur only with white. I haven't been able to reproduce
the bug if the image is filled with another color.

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Title:
  Artifacts when scaling down with Sinc Lanczos3

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