[Image-SIG] Re: aliasing on resize or thumnail?

marc lindahl marc@bowery.com
Wed, 05 Sep 2001 10:20:53 -0400


> From: "Clover Andrew" <aclover@1value.com>
> 
> They do blur the picture a little for me, in comparison if NEAREST. I
> believe what is happening - by design - is that BILINEAR and BICUBIC are
> just exactly that: they calculate each pixel color from the four pixels
> closest to it in the original image.

That's not how it's supposed to work, to be an antialising filter, is it?
It should apply a linear or bicubic curve over how ever many pixels (in the
source) map to the square of destination pixels.  Is it a bug, then??