Quality Assessment of an Adaptive Filter for Artifact Reduction in Mobile Video Sequences

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Ulrich Engelke, Andreas Rossholm, Hans-Jürgen Zepernick, Benny Lövström
Title: Quality Assessment of an Adaptive Filter for Artifact Reduction in Mobile Video Sequences
Conference name: ISWPC
Year: 2007
Publisher: IEEE
City: San Juan, Puerto Rico
ISI number: 000247082000068
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Authors e-mail: uen@bth.se
Language: English
Abstract: In this paper, we examine an adaptive deblocking deringing filter for mobile video sequences in H.263 format. The considered filter has been designed with reference to the constraints of computational complexity and working memory of mobile terminals. The post filter suggested by the International Telecommunications Union (ITU) in Recommendation H.263 App. III is also included as a reference. Given that fidelity metrics such as the peak signal-to-noise ratio (PSNR) do not necessarily correlate well with video quality as experienced by the user, we consider in this paper objective quality metrics that can incorporate knowledge about the user's perception into the quality assessment. Guidelines for choosing filter parameters in relation to user-perceived video quality are obtained from the numerical results.
Subject: Telecommunications\General
Signal processing\Image and Video Processing
Keywords: Video quality, video communication, video artifacts, video filtering
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