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From: scott@dcs.qmw.ac.uk (Scott Mitchell)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Making thumbnail images under FreeBSD ?
Date: 01 Oct 1996 08:52:25 GMT
Organization: Queen Mary & Westfield College, London, UK
Lines: 55
Message-ID: <SCOTT.96Oct1095225@crux.dcs.qmw.ac.uk>
References: <529gq7$682@vixen.cso.uiuc.edu> <529ore$glp@hamilton.maths.tcd.ie>
<529sul$gtn@prometheus.acsu.buffalo.edu>
NNTP-Posting-Host: crux.dcs.qmw.ac.uk
In-reply-to: pleung@cs.buffalo.edu's message of 25 Sep 1996 00:04:37 GMT
In article <529sul$gtn@prometheus.acsu.buffalo.edu> pleung@cs.buffalo.edu (Patrick Leung) writes:
> From: pleung@cs.buffalo.edu (Patrick Leung)
> Newsgroups: comp.unix.bsd.freebsd.misc
> Date: 25 Sep 1996 00:04:37 GMT
> Organization: University at Buffalo
> NNTP-Posting-User: pleung
>
> David Malone (dwmalone@maths.tcd.ie) wrote:
> : dannyman@arh0135.urh.uiuc.edu (Dannyman) writes:
>
> : > gfxcon then took the image and saved a scaled gif fitting wihin 92
> : >x 92 pixels.
>
> : > Pretty good, but what Unix programs exist for me to do the same?
> : >(Or do I have to figure a way to send the jobs to my Amiga?)
>
> : You want ImageMagick from the ports collection. mogrify will do what you
> : want. ( There is an extensive manual page ).
>
> : David.
>
>
> xloadimage -xzoom 45 -yzoom 60 waterfall.jpeg -dump jpeg new_waterfall.jpeg
>
> the dump option, tells xloadimage to dump it into a file instead
> of the screen.
>
>
> In your case,
> #calculate x and y percentage to zoom
>
> $x = (width_in_pixels_of_image / 92.0) * 100
> $y = (height_in_pixels_of_image /92.0) * 100
> xloadimage -xzoom $x -yzoom $y $pic -dump jpeg $new_pic
>
>
> hope this helps,
> Patrick
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.
Cheers,
Scott
--
===========================================================================
Scott Mitchell, CompSci Dept, Queen Mary & Westfield College, London, UK
mailto:scott@dcs.qmw.ac.uk http://www.dcs.qmw.ac.uk/~scott
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