Finally, got some response... FYI ----------
From: "Fredrik Lundh" <fredrik@pythonware.com> Date: Wed, 5 Sep 2001 17:00:01 +0200 To: <image-sig@python.org> Subject: Re: [Image-SIG] Re: aliasing on resize or thumnail?
marc lindahl <marc@bowery.com> wrote:
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 isn't an anti-aliasing filter: the BILINEAR and BICUBIC resampling filters are intended for geometric transforms (rotations, quadrilateral warps), not thumbnail generation.
(and the ANTIALIAS filter isn't available in 1.1.2)
you can get a better-than-nothing result by resizing multiple times with the BILINEAR filter; untested:
while im.size[0] > size[0] or im.size[1] > size[1]: im = im.resize( (max(size[0], im.size[0]/2), max(size[1], im.size[1]/2)), Image.BILINEAR )
</F>
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