Re: [boost] GIL Review

From: Joel de Guzman (joel_at_[hidden])
Date: 2006-11-01 02:50:03

Joel de Guzman wrote:
> Matt Gruenke wrote:
>> Joel de Guzman wrote:
> 
>>> I disagree. A color space is a tuple of numbers. It is concerned with
>>> data and layout as far as I can see. That is the very definition of
>>> "tuple".
>>>  
>> That's a color (or pixel value).
>>
>> A color space provides the semantics of these numbers, possibly 
>> including how they are converted to other color spaces.  This may 
>> include its basis, CIE primaries, transfer function, gamut, etc.  (For 
>> more information, here's a good starting point: 
>> http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html )
>>
>> A pixel format establishes the mapping between channels of an image 
>> (i.e. color, pixel value, etc.) and components of a color space.
> 
> Now I see the confusion. There are overlaps in the definition of
> colors and color-spaces of course. Did you think they were orthogonal?
> See: http://tinyurl.com/18r for the definition of color-spaces.

tinyurl mistake again! One more try:

     http://tinyurl.com/veebq

Regards,
-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net