Resize bug (Bilinear and nearest neighbour)

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ost
Posts: 1
Joined: Wed Dec 15, 2010 9:57 am

Resize bug (Bilinear and nearest neighbour)

Post by ost »

Maybe I'm picky here, but I'm doing some technical tests here.
When resizing a 10x10 pixel image (just a symmetric simple X) to either 10x15 or 15x10 using the mentioned methods, the result is not what I expect. The symmetry is lost. My bet would be a rounding issue...

Im on version 1.97.8 (Sep 20 2010)
Libformat Version 5.76
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XnTriq
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Re: Resize bug (Bilinear and nearest neighbour)

Post by XnTriq »

I believe that's typical for Nearest-neighbor interpolation, ...
  • Adobe Photoshop v6.0.1:
    Image
... but I can confirm a bug with Bilinear interpolation :bugconfirmed:
  • Adobe Photoshop v6.0.1:
    Image
  • XnView v1.97.8:
    Image
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helmut
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Joined: Sun Oct 12, 2003 6:47 pm
Location: Frankfurt, Germany

Re: Resize bug (Bilinear and nearest neighbour)

Post by helmut »

Thank you, XnTriq for this excellent demo. :-) A clear bug in the bilinear interpolation.