From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Lars Magne Ingebrigtsen <larsi@gnus.org>
Cc: joakim@verona.se, emacs-devel@gnu.org
Subject: Re: Image rescaling
Date: Mon, 15 Sep 2014 10:27:42 -0400 [thread overview]
Message-ID: <jwvppex6jvj.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <m361gpc9y2.fsf@stories.gnus.org> (Lars Magne Ingebrigtsen's message of "Mon, 15 Sep 2014 15:03:33 +0200")
> 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.
Stefan
next prev parent reply other threads:[~2014-09-15 14:27 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-15 12:45 Image rescaling Lars Magne Ingebrigtsen
2014-09-15 12:55 ` joakim
2014-09-15 13:03 ` Lars Magne Ingebrigtsen
2014-09-15 14:27 ` Stefan Monnier [this message]
2014-09-15 15:13 ` David Kastrup
[not found] ` <COL131-W90F448E3DC24C8E66A0E4D84C90@phx.gbl>
[not found] ` <m3d2as98w1.fsf@stories.gnus.org>
2014-09-18 17:03 ` Mirek Kaim
2014-09-15 15:12 ` joakim
2014-09-15 16:14 ` Lars Magne Ingebrigtsen
2014-09-15 19:01 ` joakim
2014-09-15 19:59 ` Lars Magne Ingebrigtsen
2014-09-15 20:00 ` joakim
2014-09-16 0:07 ` Stefan Monnier
2014-09-16 9:42 ` Lars Magne Ingebrigtsen
2014-09-16 11:22 ` Dmitry Antipov
2014-09-16 11:37 ` Lars Magne Ingebrigtsen
2014-09-16 14:42 ` Eli Zaretskii
2014-09-16 14:52 ` Lars Magne Ingebrigtsen
2014-09-16 3:10 ` Stephen J. Turnbull
2014-09-16 14:33 ` Eli Zaretskii
2014-09-19 16:48 ` Ivan Kanis
2014-09-30 14:19 ` Lars Magne Ingebrigtsen
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