Warp <war### [at] tagpovrayorg> wrote in news:404b53d0@news.povray.org:


> 
>   How does PNG help to reduce file sizes compared to JPEG?
> 

Not compared to jpeg, but compared to other uncompressed formats.  

> 
>   But JPEG is "broken". 

The p.b.i newsgroup is not broken.  People can share images in a format 
that is widely supported(jpeg).  If the need arises there is an alternate 
format that is almost as pervasive that uses completely lossless 
compression for maximum image quality at greater than 8-bit color(PNG).

The p.b.a newsgroup "IS" broken.  How many times have you read "I can't 
see your animation" because somebody used some super new codec.  Or worse 
you have a dozen codecs installed just to read that newsgroup.  Do we 
really want to go down that road with p.b.i.


IMHO, this whole JPEG2000 debate is putting the cart before the horse.  
First you define the problem, then you develop the solution.  If the 
problem is "displaying images of >8-bit color depth", then there are more 
options available besides JPEG2000.  

I personally prefer PNG and Open EXR ;)



-- 
Tom
_________________________________
The Internet Movie Project
http://www.imp.org/

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