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  • Research Article
  • Open Access

Joint Wavelet Video Denoising and Motion Activity Detection in Multimodal Human Activity Analysis: Application to Video-Assisted Bioacoustic/Psychophysiological Monitoring

  • 1Email author,
  • 1,
  • 1 and
  • 1
EURASIP Journal on Advances in Signal Processing20072008:792028

  • Received: 28 February 2007
  • Accepted: 8 October 2007
  • Published:


The current work focuses on the design and implementation of an indoor surveillance application for long-term automated analysis of human activity, in a video-assisted biomedical monitoring system. Video processing is necessary to overcome noise-related problems, caused by suboptimal video capturing conditions, due to poor lighting or even complete darkness during overnight recordings. Modified wavelet-domain spatiotemporal Wiener filtering and motion-detection algorithms are employed to facilitate video enhancement, motion-activity-based indexing and summarization. Structural aspects for validation of the motion detection results are also used. The proposed system has been already deployed in monitoring of long-term abdominal sounds, for surveillance automation, motion-artefacts detection and connection with other psychophysiological parameters. However, it can be used to any video-assisted biomedical monitoring or other surveillance application with similar demands.


  • Motion Detection
  • Video Processing
  • Complete Darkness
  • Surveillance Application
  • Poor Lighting

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Authors’ Affiliations

Laboratory of Electroacoustics and TV Systems, Department of Electrical and Computer Engineering, Laboratory of Electronic Media, Department of Journalism and Mass Communication, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece


© C. A. Dimoulas et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.