NDLI: A novel error concealment method for images using watermarking in error-prone channels

Content Provider	IEEE Xplore Digital Library
Author	Gur, G. Alagoz, F. AbdelHafez, M.
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. Eng., Bogazici Univ., Istanbul (Gur, G.; Alagoz, F.)
Abstract	In this paper, we propose a new error concealment method for covering up the high packet losses of an original image after its transmission through an error-prone channel. Error-concealment techniques provide a simple framework to compensate these distortions without incurring additional delays and wasting bandwidth resources which are crucial for real-time applications over networks with limited resources. Unfortunately, most of the existing error-concealment techniques work only if the packet losses are smaller than a threshold and/or they are uniformly distributed. Utilizing data hiding techniques is a potential approach to overcome this restriction. We investigated an error concealment technique utilizing discrete wavelet transform (DWT) for embedding macroblock-based BNM (best-neighborhood-matching) information into the original image in order to utilize spatial redundancy. We propose that this technique can be implemented for error-prone channels to combat such degradations in a backward-compatible scheme. We show that the proposed error concealment technique is a promising one, especially for the erroneous channels causing a wider range of packet losses, at the expense of some degradation in the perceptual quality of the original image
Starting Page	2637
Ending Page	2641
File Size	4415673
Page Count	5
File Format	PDF
ISBN	9783800729098
DOI	10.1109/PIMRC.2005.1651921
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-11
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Watermarking Discrete wavelet transforms Computer errors Degradation Data encapsulation Robustness Propagation losses Bandwidth Redundancy Humans error-prone channels Error concealment watermarking
Content Type	Text
Resource Type	Article

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