KEYWORDS: Digital micromirror devices, 3D displays, Super resolution, Cameras, Calibration, Image resolution, 3D image processing, Projection systems, Image processing, Relays
We describe a projection system that presents a 20 megapixel image using a single XGA SLM and time-division
multiplexing. The system can be configured as a high-resolution 2-D display or a highly multi-view horizontal parallax
display. In this paper, we present a technique for characterizing the light transport function of the display and for
precompensating the image for the measured transport function. The techniques can improve the effective quality of the
display without modifying its optics. Precompensation is achieved by approximately solving a quadratic optimization
problem. Compared to a linear filter, this technique is not limited by a fixed kernel size and can propagate image detail
to all related pixels. Large pixel-count images are supported through dividing the problem into blocks. A remedy for
blocking artifacts is given. Results of the algorithm are presented based on simulations of a display design. The display
characterization method is suitable for experimental designs that may be dim and imperfectly aligned. Simulated results
of the characterization and precompensation process are presented. RMS and qualitative improvement of display image
quality are demonstrated.
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