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Proceedings Paper

Improving the performance of the MPEG2 coder at high quality
Author(s): V. Ralph Algazi; Tongying Wang; Andrew G. Tescher; John T. Reagan
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Paper Abstract

The development of the MPEG video coding standard is an important step in the commercial development of digital media, but constrains further performance improvements that may be possible by innovative algorithmic methods. The approach described in this paper keeps the basic structure of the MPEG2 coder, but allows for pre- and post-processing of the video sequence. We have two broad options available. The first one is to perform image processing prior to encoding, so as to improve the compression-quality trade off in the subsequent MPEG2 coder. The second one is to use image processing on the decoded video to improve its quality. This second approach includes the widely recognized desire to reduce end of block impairments of DCT based coders. In this paper, we report some of our work on both pre- and post processing to improve performance. For this work, we focus on the use of data dependent inhomogeneous filtering that preserves the structure and thus quality of images, while reducing unwanted random noise.

Paper Details

Date Published: 16 February 1996
PDF: 10 pages
Proc. SPIE 2663, Very High Resolution and Quality Imaging, (16 February 1996); doi: 10.1117/12.233033
Show Author Affiliations
V. Ralph Algazi, Univ. of California/Davis (United States)
Tongying Wang, Univ. of California/Davis (United States)
Andrew G. Tescher, Lockheed Martin Palo Alto Research Lab. (United States)
John T. Reagan, Lockheed Martin Palo Alto Research Lab. (United States)

Published in SPIE Proceedings Vol. 2663:
Very High Resolution and Quality Imaging
V. Ralph Algazi; Sadayasu Ono; Andrew G. Tescher, Editor(s)

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