[Typo3-dev] Extended class

[Wolfgang Klinger]

 Hi!

 On Wed, 16 Feb 2005, Kraft Bernhard wrote the following:
> >    GIMP: possible=1, speed=6, quality=9, size=7
> >    GD:   possible=1, speed=2, quality=5, size=6
> >    IM4:  possible=1, speed=9, quality=8, size=8
> 
> One thing which came to my mind:
> 
> How will you define "quality". I don't know if there are any programs
> which can determine the quality of an image after a transformation in
> relation to the original image.
> I think it will be quite hard to define the quality of a "sharpen" or
> "blur" function ...
> 

 with JPEG (http://www.jpeg.org/) "quality" is a defined value, I think.
 There's a reference code to generate a pair of quantization tables, but
 different applications may use their own code instead; you'll
 have to investigate that first;


 bye
 Wolfgang