Rate-Distortion Optimal Adaptive Quantization and Coefficient Thresholding for MPEG Coding

Farin, Dirk ; Käsemann, Michael ; With, Peter H. N. de ; Effelsberg, Wolfgang

Document Type: Conference or workshop publication
Year of publication: 2002
Book title: Proceedings of the 23rd Symposium on Information Theory in the Benelux : Louvain-la-Neuve, Belgium May 29-31, 2002
The title of a journal, publication series: Proceedings of the 23rd IEEE Symposium on Information Theory in the Benelux
Page range: 131-138
Date of the conference: 30.04.2002
Place of publication: Enschede
Publishing house: Werkgemeenschap voor Informatie- en Communicatietheorie
Publication language: English
Institution: School of Business Informatics and Mathematics > Praktische Informatik IV (Effelsberg 1989-2017)
Subject: 004 Computer science, internet
Abstract: This paper presents an MPEG-2 compatible adaptive quantization algorithm that leads to the optimal encoding of I-frames in the sense of maximizing PSNR. It integrates three key features into a single Lagrangian optimization model: adaptive quantization including quantizer-change overhead consideration, coefficient thresholding, and a new coefficient amplitude reduction technique. Our results show that I-frames generated by the TM5 reference encoder are about 1.5-2.0 dB below the theoretical optimum.

Dieser Eintrag ist Teil der Universitätsbibliographie.

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