Re: [SLUG] Re: An exceedingly courteous .jpg enquiry

[Peter Chubb]

>>>>> "heracles" == heracles  <[EMAIL PROTECTED]> writes:

heracles> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

heracles> Hi Bill, There are several possibilities that come to mind.
heracles> You could bring it into the Gimp and try each of the
heracles> resampling/enlarging methods. You may get a satisfactory
heracles> result.  Or, if you are really keen you could convert it to
heracles> a vector format (can be done but may take more effort than
heracles> it is worth) and then anything goes.

Most of the background-setting tools will scale & smooth, or tile the
image.

For example, wmsetbg -a will scale and smooth keeping the aspect
ratio.  It does a pretty good job too.

xsetroot is pretty limited.
If you're limited to it, you need an X pixmap anyway, so I'd be
doing something like:
        jpegtopnm x.jpeg | pnmscale 1.6 | pnmtoxmp > x.xpm
with maybe a pnmsmooth after scaling.
You can do the same thing with mogrify or convert from the imagemagick
suite if you prefer that to the netpbm toolset.
        convert -resize 1024x768 -support 1.1 x.jpeg x.ppm
(adjust the resize support factor until the image looks right)

--
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
http://www.ertos.nicta.com.au           ERTOS within National ICT Australia
-- 
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html