Removing the pixel structure from projected images using a transparent spatial filter

Shawn L. Kelly

doi:10.1117/12.60359

1 July 1992 Removing the pixel structure from projected images using a transparent spatial filter

Shawn L. Kelly

Proceedings Volume 1664, High-Resolution Displays and Projection Systems; (1992) https://doi.org/10.1117/12.60359
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

Electronic image projection systems generally suffer from dark grid (pixelation) or scan line structures which become more noticeable as the image is expanded. Since these structures represent a high spatial frequency error in the image, appropriate spatial filtering can be used to reduce this error and increase image fidelity. A new, transparent spatial filter is introduced and demonstrated to depixelize the image produced by a liquid crystal video projector. Various filter design and fabrication guidelines to achieve the best apparent image are also discussed.

Citation Download Citation

Shawn L. Kelly "Removing the pixel structure from projected images using a transparent spatial filter", Proc. SPIE 1664, High-Resolution Displays and Projection Systems, (1 July 1992); https://doi.org/10.1117/12.60359

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