[Gllug] PNGs

[salsaman at xs4all.nl]

On Mon, February 12, 2007 16:37, Adrian McMenamin wrote:
> Anybody here a graphics expert?
>
> I have written some perl to reduce PNGs using adaptive filtering and it
> works brilliantly on the test suite images (see Image::Pngslimmer in
> CPAN or http://png.transpero.net)
>
> But in the real world it gives lousy results - filtering often seems to
> make images bigger.
>
> Is that to be expected? I am intending to use this with photographs
> because although lossy JPEGs are better for that, all of this came out
> of a J2ME project and most mobiles only display PNGs.
>
> Should I just not bother trying to filter the photos because they are
> unlikely to have the characteristics that work well with filtering (ie
> slowly changing colours)
>
> --
> Gllug mailing list  -  Gllug at gllug.org.uk
> http://lists.gllug.org.uk/mailman/listinfo/gllug
>


Is there some reason why you aren't using pngcrush ?

http://pmt.sourceforge.net/pngcrush/

Gabriel.
http://lives.sourceforge.net


-- 
Gllug mailing list  -  Gllug at gllug.org.uk
http://lists.gllug.org.uk/mailman/listinfo/gllug