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Re: Image rescaling

From: Stefan Monnier
Subject: Re: Image rescaling
Date: Mon, 15 Sep 2014 10:27:42 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

> Rescaling is apparently a pretty tricky thing that is mostly implemented
> wrong:

> http://www.4p8.com/eric.brasseur/gamma.html

Rescaling an image is exactly the same problem as resampling an audio
file (e.g. to play it at 48KHz instead of the 44.1KHz used on the CD
from which it came).

Doing it naively works, but in some cases gives very poor
results, indeed.


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