Classification and evaluation of filters for wavelet coded videostreams

✍ Scribed by Andreas Kassler; Alexander Neubeck; Peter Schulthess

• Book ID: 104357566
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 331 KB
• Volume: 16
• Category: Article
• ISSN: 0923-5965
• DOI: 10.1016/s0923-5965(01)00008-x

✦ Synopsis

In this paper, we classify and evaluate "lter algorithms developed for a wavelet based video coder. Filter operations convert one representation of a video stream into a di!erent one in which the client is more interested in. Based on our previous work, we have improved the frame rate "lter and the dynamic rate shaping "lter with preferences (DRS-P) which allows to trade o! bandwidth consumption versus visual quality using given user constraints. The user may specify a target bandwidth and his/her preferences and the DRS-P tunes its internal "lter operations to match the bandwidth contract and the user preferences based on bandwidth estimates and packet statistics gathered during "lter operation. We evaluate di!erent "lter settings and combinations with respect to bandwidth and processing time and show that "lters can be used to e$ciently support real time conferencing scenarios including mobile and low power receivers.

2001 Elsevier Science B.V. All rights reserved.