W3C home > Mailing lists > Public > www-svg@w3.org > February 2011

Re: [Moderator Action (size limit exceeded)] RE: SVG masks and luminance calculations

From: Erik Dahlstrom <ed@opera.com>
Date: Mon, 07 Feb 2011 14:43:30 +0100
To: "Chris Lilley" <chris@w3.org>, "Rik Cabanier" <cabanier@adobe.com>
Cc: "Boris Zbarsky" <bzbarsky@mit.edu>, "Tavmjong Bah" <tavmjong@free.fr>, "Dirk Schulze" <vbs85@gmx.de>, "www-svg@w3.org" <www-svg@w3.org>, "Robert Longson" <longsonr@gmail.com>
Message-ID: <op.vqjcepatgeuyw5@localhost>
Forwarding yet another message on behalf of Jos Hirth:

Adobe Illustrator CS3 also does it the sRGB way. (It's kinda unlikely that  
they touched that code with CS4 or CS5.)
Screenshot: http://i.imgur.com/v1FWt.png

Rik, can you confirm? This was testing with  


On Sun, 06 Feb 2011 22:02:53 +0100, Rik Cabanier <cabanier@adobe.com>  

> Alternatively, you can find the complete spec here:  
> http://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/pdf_reference_1-7.pdf
> Page 523 has the formula for luminance..
>> -----Original Message-----
>> From: Chris Lilley [mailto:chris@w3.org]
>> Sent: Saturday, February 05, 2011 2:59 AM
>> To: Rik Cabanier
>> Cc: Erik Dahlstrom; Boris Zbarsky; Tavmjong Bah; Dirk Schulze; www-
>> svg@w3.org; Robert Longson
>> Subject: Re: [Moderator Action (size limit exceeded)] RE: SVG masks and
>> luminance calculations
>> On Friday, February 4, 2011, 6:46:01 PM, Rik wrote:
>> RC> Assuming you're talking about luminosity masks, the formula for
>> RC> calculating them is defined in the PDF spec.
>> RC> I've attached the relevant pages to this mail. (Page 523 has the
>> RC> actual math.)
>> The original email was rejected because the attachment was too large.
>> The original attachment can be found at
>> http://lists.w3.org/Archives/Public/www-archive/2011Feb/att-
>> 0009/Pages_from_pdf_reference_1-7.pdf
>> --
>>  Chris Lilley   Technical Director, Interaction Domain
>>  W3C Graphics Activity Lead, Fonts Activity Lead  Co-Chair, W3C  
>> Hypertext
>> CG  Member, CSS, WebFonts, SVG Working Groups

Erik Dahlstrom, Core Technology Developer, Opera Software
Co-Chair, W3C SVG Working Group
Personal blog: http://my.opera.com/macdev_ed
Received on Monday, 7 February 2011 13:44:13 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 8 March 2017 09:47:24 UTC