End-User DLP Projector Colour Calibration

Bastani, B., Funt, B., and Ghaffari, R., "End-User DLP Projector Colour Calibration", AIC'2005 Proc. 10th Congress of the International Color Association, Granada, May 2005

Abstract:

We have analyzed different approaches to calibrating 4-segment Digital Light Processing (DLP) projectors from the perspective of an end-user. A modification is introduced to Wyble and Rosen�s1,2 model that improves its prediction of tristimulus values (XYZ) as a function of input RGB. Tests also show that Tamura, Tsumura, and Miyake�s Masking model, which was originally introduced to compensate for channel interaction in LCD monitors, performs as well as the improved Wyble-Rosen model in the forward direction (RGB to XYZ). For predicting RGB values given XYZ input data (backward direction); however, we find that the Masking model is more accurate. All the models considered in this paper involve only basic look-up tables and matrix multiplication and as a result are computationally efficient.

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Keywords: Display calibration, DLP projector, digital light processing, masking model, RGB to XYZ

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