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From: nik@guava.blueberry.co.uk (Nik Clayton)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Making thumbnail images under FreeBSD ?
Date: 1 Oct 1996 14:53:02 GMT
Organization: Atlas Internet
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Message-ID: <52rb8e$d4f@roadrunner.atlas.co.uk>
References: <529gq7$682@vixen.cso.uiuc.edu>
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<SCOTT.96Oct1095225@crux.dcs.qmw.ac.uk>
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In article <SCOTT.96Oct1095225@crux.dcs.qmw.ac.uk>,
scott@dcs.qmw.ac.uk (Scott Mitchell) writes:
> If you have bunch of images to do, there is always pnmindex (part of
> the netpbm port). It creates thumbnails of a group of images and
> combines them into a single big image. Of course you have to convert
> everything to PNM first but otherwise it works fine, and even labels
> the thumbnails.
I've been using something like the following recently, to convert a bunch
of JPEG images for a client:
foreach i (*.jpeg)
setenv b `basename $i .jpeg`
djpeg -pnm $i | pnmscale -xscale .5 -yscale .5 | ppmquant -fs 64 \
ppmtogif > ${b}.gif
end
which turns all the JPEG files in the current directory to GIF files that
are half the size and have 64 colours. Takes maybe 10 seconds to process
50 files, uses djpeg from the jpeg port, and p?m from the netpbm stuff.
Annoys the hell out of the Mac Photoshop users as well (File, Open, Image,
Size, - do scale -, Image, Indexed, - type 64 -, File, Save, repeat ad
nauseum).
N
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