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Re: Agenda, 16 February 2012 SVG WG telcon

From: Alex Danilo <adanilo@google.com>
Date: Fri, 17 Feb 2012 11:44:54 +1100
Message-ID: <CAGdNekRD7Wc1ohWHGZYZEQ3BiR3PHCVY8Jxsj-RxU=8TmXppnA@mail.gmail.com>
To: Chris Lilley <chris@w3.org>
Cc: Erik Dahlstrom <ed@opera.com>, public-svg-wg@w3.org
+1 to that.

There seems to be some disconnect between what colour management is about
recently.

For example the recent thread (on webkit-dev perhaps?) about filters
generating colour that's 'illegal' - i.e. the colour channels greater than
the alpha in pre-multiplied form is wrong. It's just a fluorescent colour.

We really should ensure we do colour science properly.

Alex

On Thu, Feb 16, 2012 at 11:49 PM, Chris Lilley <chris@w3.org> wrote:

> On Thursday, February 16, 2012, 10:14:36 AM, Erik wrote:
>
> ED> Missed one thing:
>
> ED> * color-interpolation-filters
> ED>
> ED>
> http://www.w3.org/mid/CAGN7qDDh_yJX_EzWNtuvW3N_eywgvB3MioMn6FoP_p8kHTwh-A@mail.gmail.com
>
>
> Are we discussing:
>
> a) how to specify the longhand, element-based equivalent to each of the
> css shorthand properties (which will include the value of the
> color-interpolation-filters property,
>
> or
>
> b) whether to remove color-interpolation-filters and color-interpolation,
> thus breaking backwards compatibility and destroying improvements in color
> management in SVG2, because of flawed understanding of basic concepts like
> gamma, chromaticity, and so forth?
>
> If a) then I am all in favour of providing the longhand equivalents and
> would like to see tests that put the longhand and shorthand side by side so
> we can check that implementors are doing the right thing.
>
> If b) and we are seriously considering legislating the dumb approach to
> RGB, then I have strong objections to such a wrong-headed approach.
>
> I can provide links to further reading if people need to brush up on basic
> concepts.
>
>
> --
>  Chris Lilley   Technical Director, Interaction Domain
>  W3C Graphics Activity Lead, Fonts Activity Lead
>  Co-Chair, W3C Hypertext CG
>  Member, CSS, WebFonts, SVG Working Groups
>
>
>
Received on Friday, 17 February 2012 14:45:38 UTC

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