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Fwd: Re: Provenance of "sRGB for ICC profiles" on w3.org

From: Peter Occil <poccil14@gmail.com>
Date: Sun, 3 Sep 2017 08:11:25 -0400
To: public-colorweb@w3.org
Cc: www-style@w3.org
Message-ID: <c7f7822b-b76b-3880-dadb-9c226b8f2cf5@gmail.com>
Letting the style mailing list know.


-------- Forwarded Message --------
Subject: 	Re: Provenance of "sRGB for ICC profiles" on w3.org
Date: 	Sun, 3 Sep 2017 08:05:59 -0400
From: 	Peter Occil <poccil14@gmail.com>
To: 	public-colorweb@w3.org



While I'm at it, that document contains a very questionable statement
about the "black point" of sRGB, suggesting that the "black point" has a
"veiling glare luminance" of 0.2 cd/m^2 (and indeed that suggestion
appears further in some of the formulas in that document).  Is it true
that the "sRGB black point" (what sRGB defines as black) has a luminance
of 0.2 cd/m^2 (absolute Y = 0.2) rather than 0 cd/m^2 (absolute Y = 0,
the start of the absolute XYZ scale)?


On 09/02/2017 03:28 PM, Peter Occil wrote:
> I'm aware of the following document posted on the W3C Web site:
>
> https://www.w3.org/Graphics/Color/srgb
>
> I find it very useful as a reference, but: Where did this document 
> come from?  Who were its authors?  When was it posted?  I couldn't 
> find it linked anywhere on the W3C site except on a mailing list 
> message (ref. 1).
>
> Ref. 1. https://lists.w3.org/Archives/Public/www-style/2016Sep/0061.html
>
Received on Sunday, 3 September 2017 12:12:01 UTC

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