Re: Preview RGB space versus RGB working space
Re: Preview RGB space versus RGB working space
- Subject: Re: Preview RGB space versus RGB working space
- From: Roger Breton <email@hidden>
- Date: Tue, 22 May 2001 08:21:14 -0400
Chris,
>
LAB is not lossless - needing more bits than most RGB spaces to get
>
the same accuracy.
Could you give a specific example of "why LAB is not lossless"? An example
where a color expressed in "RGB" needs less bit than its sibling in Lab,
like you describe above?
>
Also, ICC LAB is not infinite, and many RGB working spaces include
>
colors ouside of ICC LAB.
First, what difference could there be between "CIE" Lab and "ICC" Lab, if
any? And second, you mean "imaginary RGB devices" (RGB working spaces) that
have their primaries located outside of the spectrum locus?
>
There are many reasons (which we've covered before) why LAB is not a
>
good working space.
Could you refer approximately under what subject heading you've discussed
this here in the past so that I can do a proper search?
>
Chris
Regards,
--
Roger Breton
Quibec Institute of Graphic Communications
Montrial (Quibec) Canada T. (514) 389-5061 F. (514) 389-5840
email@hidden