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Ralf Jurrien : May 11th 2007 - 18:01 CET

Xerox color language


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XeroxXerox color language : Xerox Corporation scientists are developing a technology to make adjusting colors in a document as easy as simply describing the color. Users can type “make the sky a deeper blue” or give a voice command “make the background carnation pink” and the software does the work. The invention, still in the research stage, creates “color language” by translating human descriptions of color into the precise numerical codes that machines use to print color documents. “Especially in the office environment, there are many non-experts who know how they would like color to appear but have no idea how to manipulate the color to get what they want,” said Geoffrey Woolfe, principal scientist in the Xerox Innovation Group.
Color language
Geoffrey Woolfe added: “You shouldn’t have to be a color expert to make the sky a deeper blue or add a bit of yellow to a sunset.” Yesterday, at the 2007 Annual Meeting of the Inter-Society Color Council (ISCC), Woolfe described his work in a paper called “Natural Language Color Editing.” Xerox has filed for patents on the technology. Woolfe’s discovery means that color adjustments could be made on devices like color office printers and commercial presses without having to deal with the mathematics. For instance, cardinal red on a printer or monitor is really expressed by a set of mathematical coordinates that identify a specific region in a three-dimensional space, which is the gamut of all the colors that the device can display or print. To make that color less orange, the color expert distorts (morphs) that region to a new region in the gamut.

Color language

Common words to adjust color
The ability to use common words to adjust color would have far-reaching implications for non-experts as well as graphic artists, printers, photographers and other professionals who spend a significant amount of time fine tuning the colors in documents. Woolfe focused his research on common human descriptions of color. He found common words used to distinguish different shades and colors could be mapped to the technical language of color created by engineers and used in devices like color office printers and commercial presses. “The innovative part of this is the mapping language,” Woolfe said. “At Xerox we’ve found that if you can connect the human dimension to the mathematical dimension, you get a lot of usability.”

Xerox color language - Voice commands
Although still in the early research stage, Woolfe’s invention could be applied in many different ways. Add voice commands to the technology, and one could literally “tell” a computer to “punch up the purple” in a bouquet of flowers. Or office printers could be commanded to print colors a certain way (“when printing green, make it more of a teal green”). It also would have many uses in digital printing - making it easier for print providers to communicate with their customers. “In the end it’s all about usability,” Woolfe said. “Color is so prevalent today, you shouldn’t have to be an expert to handle it.”





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