Color management of four-primary digital light processing projectors

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Title: Color management of four-primary digital light processing projectors
Author: Wyble, David; Rosen, Mitchell
Abstract: Traditionally, hardware for additive color displays, including projection devices, has been built from a set of only three prima-ries: a red, a green, and a blue. Recently, some manufacturers of projector displays have designed their hardware to project a fourth primary, a white. This fourth primary has been helpful in increasing the luminous output possible from these displays. Because interde-vice color communication infrastructure is based on red, green, and blue channels (RGB), the four- primary devices accept RGB digits and internally convert to red, green, blue, and white channels (RGBW). From a color management viewpoint, the four- color projectors look like RGB devices, but the typical color characterization models fail owing to the complexity introduced by the hidden RGB to RGBW conversion. Several four- primary digital light processing projectors were investigated and a new characterization model is proposed that approximately accounts for the relationship between RGB digital counts and resultant projected colorimetry.
Description: RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/4256
Publishers URL: http://dx.doi.org/10.2352/J.ImagingSci.Technol.(2006)50:1(17)
Date: 2006-01

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