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Error concealment of transform coded images with continuous QoS

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2 Author(s)
Xiao Su ; Comput. Eng. Dept., San Jose State Univ., CA, USA ; Yi Shang

Transmission of block-based transform coded images over lossy packet networks is subject to packet losses, causing blocks to be lost or damaged. We propose a new hybrid error concealment algorithm to achieve continuous QoS in terms of both image quality and reconstruction time. It integrates the dc concealment with the information-restoration scheme, and provides a continuous range of time-quality trade-offs by controlling percentage of the missing blocks to be reconstructed by the dc concealment. Extensive experimental results show that our approach works well for both homogeneous and textured images, and achieves high-quality images in short time.

Published in:

Information Technology: Coding and Computing, 2004. Proceedings. ITCC 2004. International Conference on  (Volume:2 )

Date of Conference:

5-7 April 2004