Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2006-06-06
2006-06-06
Bella, Matthew C. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S590000, C345S593000, C345S594000, C345S597000, C345S601000
Reexamination Certificate
active
07057624
ABSTRACT:
The invention relates to techniques for light leakage compensation in a multi-channel display device. The invention may be particularly useful in calculating single-channel emission spectra for liquid crystal displays (LCD). In order to accurately model and calibrate a display device, an accurate spectral output estimate for each of the individual color channels is needed. The invention provides techniques to compensate for light leakage from adjacent color channels that cause hue shifts in the images reconstructed by the display device. In accordance with the invention, a light leakage emission spectrum can be determined for each color channel of a display based on a measured emission spectrum for the display at a minimum level and assumed emission spectra for light sources in the display. A single-channel emission spectrum is the difference between a cumulative color channel emission spectrum measurement and the light leakage spectra of adjacent color channels.
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Bella Matthew C.
Bocchetti Mark G.
Eastman Kodak Company
Rahmjoo Mike
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