[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]
Subject: RFE: Colour space capability within OpenDocument
(Just as an aside: is it possible for someone to outline the process by which comments on this list are considered by the TC, so that I might follow future discussion on specific features?) The OpenDocument specification references colours in a number of ways and places, unexhaustively: * 15.4.3 Color, which references XSL 7.17.1; * the color datatype defined to be #\hex{6} within the RelaxNG; * 13.1.4 Animate Color; Currently, colour management is a real problem - particularly for high-end or professional printing - since the format is only aware of colour specified as RGB, and doesn't specify a colour space. 13.1.4 is notable for mentioning a HSL colour model, although obviously it's not that relevant to printing, but everywhere else assumes RGB. This causes a number of problems that I hope can be fixed in the future. In particular, the following features would be extremely useful: 1. ability to specify colours in terms of CMY, CMYK; 2. ability to specify an RGB colour space (e.g., sRGB) for conversion purposes; 3. ability to load images etc. in formats such as CMYK, and retain RGB conversions for future use (that is, for RGB display purposes), since different applications will convert them differently (or be unable to convert them); 4. support for ISO 15076 (ICC Color Profiles) - see, e.g., the work in CSS3: http://www.w3.org/TR/css3-iccprof; 5. some degree of support for Pantone(?) While it's not terribly necessary that applications be able to do reasonable conversions, it is absolutely key that images / colours set in CMYK get passed through without being touched so that, for example, output to PDF works. I have little confidence that 5) above is possible per se, although it would be useful to be able to mark a certain colour reference as being a particular Pantone colour, even if the colour isn't close. 3 & 4 I see as less important; where conversions occur, it would be good to have them "saved" for consistency (without getting rid of the non-RGB original!), but to a large extent that can be mostly left up to applications. OpenDocument might simply advise on best practice. Many thanks, Alex.
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]