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The Color Calibration across Multi-Projector Display

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Author(s): Shu Liu | Qiuqi Ruan | Xiaoli Li

Journal: Journal of Signal and Information Processing
ISSN 2159-4465

Volume: 02;
Issue: 02;
Start page: 53;
Date: 2011;
Original page

Keywords: Multi-Projector Display | Color Calibration | Alpha Blending | Cubic B-Spline

ABSTRACT
Large plane displays are often achieved by combining tiled imaging elements, which give the appearance of a single, seamless display. However, this is difficult to realize in practical use, since differences in color will make the tiles dis-tinct even if the geometric calibration is perfect. The paper presents an approach of color calibration using cubic B- spline. According to the theory of cubic B-spline, we construct the color transfer function of each projector. This ap-proach reduces the color and photometric non-uniformities to achieve seamless tiled multi-projector display well. Finally, we propose the difference between blending region and overlapping region which can help to achieve a better effect of alpha blending.
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