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Advanced Color Projector Design Based on Human Visual System

Thakur, Mahesh Kumar Singh
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324514021

Abstract Details

2011, Master of Science (M.S.), University of Dayton, Electrical Engineering.
The current designs of color video projectors suffer from color errors commonly referred to as rainbow artifact. In this thesis, we propose new projector hardware and processing technique that reduce these artifacts signicantly. The hardware and preprocessing designs are tested in simulation by generating a video sequence that can be viewed on a 120 Hz monitor. Our contributions are in three parts. We first propose the notion of rendering error, or an error in the projected image perceived by the human visual system. We then propose spatial-temporal color wheel design incorporated the requirements for the zero rendering error condition and amplitude demodulation. The output was satisfactory, although it required a modied color wheel. Finally, we propose preprocessing scheme that reduce rendering error by introducing a correction term to cancel the predicted rendering error. This technique can be applied to traditional color wheels, and it was veried on RGB and RGBWW color wheels.
Keigo Hirakawa, PhD (Committee Chair)
Russell Hardie, PhD (Committee Member)
Eric Balster, PhD (Committee Member)
Electrical Engineering; Engineering
Advanced; color projector; human visual system; color wheel; RGBWW; RGB; spatial; temporal; spatial-temporal; preprocessing; rendering error; projector hardware;

Recommended Citations

Citations

  • Thakur, M. K. S. (2011). Advanced Color Projector Design Based on Human Visual System [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324514021

    APA Style (7th edition)

  • Thakur, Mahesh Kumar Singh. Advanced Color Projector Design Based on Human Visual System. 2011. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324514021.

    MLA Style (8th edition)

  • Thakur, Mahesh Kumar Singh. "Advanced Color Projector Design Based on Human Visual System." Master's thesis, University of Dayton, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324514021

    Chicago Manual of Style (17th edition)

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© 2011, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.