Fast source-based dithering for networked digital video

Tom Q. Nguyen; Jonathon Kay; Joseph Pasquale

doi:10.1117/12.171723

1 April 1994 Fast source-based dithering for networked digital video

Tom Q. Nguyen, Jonathon Kay, Joseph Pasquale

Proceedings Volume 2188, High-Speed Networking and Multimedia Computing; (1994) https://doi.org/10.1117/12.171723
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

Source-based dithering is a set of techniques designed to maximize the performance of real- time networked digital video systems that encode and decode video entirely in software. Usually frame grabber hardware presents frames in a 24 bit per pixel (bpp) format. However, most hosts are only equipped with single or eight bit deep displays and thus the color depth of the video must be reduced at some point. If the encoder reduces the color depth, the bandwidth required to carry the video on the network is lowered by a factor of 24 or 3 respectively, and the computational load is lightened on the receiving hosts. The color depth reduction algorithm must be efficient since the resulting frame rate, and thus the degree to which the illusion of motion is preserved, depends on how quickly a pixel can be processed. We use dithering algorithms chosen for efficiency and a contrast enhancement algorithm to improve image quality.

Citation Download Citation

Tom Q. Nguyen, Jonathon Kay, and Joseph Pasquale "Fast source-based dithering for networked digital video", Proc. SPIE 2188, High-Speed Networking and Multimedia Computing, (1 April 1994); https://doi.org/10.1117/12.171723

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