"howard chen" on wrote...
| hello,
|
| I have an automatic compression scrip written in Perl which convert
| photo (jpeg of high quality, over 1600x1200 pixels), to a smaller
| size, e.g. (800x600).
|
| I have been playing with different quality, and filters.
|
| Are there any suggestion for these, seems my script should be done
| automatically, so I cannot check the output and reconvert. I need to
| choose a fixed settings and do all my jobs.
|
I have been in the precess of documenting and updating the resize filter
use in ImageMagick as part of there intergration into the General
Distortion Operator (-distort).
You can see the (incomplete) progress of this documenting in IM Examples
on the resize page. There is a lot in it, as well as a lot on new
features in the latest IM.
Specifically new 'expert' options for handling 'support' 'blur'
'Sinc/Bessel' handling, and even expert control to allow you combine the
functions in different ways, such as producing a Rect (Box) windowed
Sinc (a non-windowed, only support limited sinc filter), or even a
Bartlett (triangular) Windowed Sinc Filter.
Also present are options to control the B,C settings for Cubic Filters
and defined by the Micthell-Netravali paper on a subjective testing of
cublic filters. (This part is yet to be documented on the above page).
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/
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