Apparatus and method for error concealment for hierarchical subb

Details Apparatus and method for error concealment for hierarchical subb Apparatus and method for error concealment for hierarchical subb

1999-08-19

2000-10-24

Couso, Jose L.

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

G06K 946

Patent

active

061379158

ABSTRACT:
An apparatus and a method for concealing errors in a hierarchical subband coding/decoding system. Specifically, error concealment of a corrupted or missing coefficient is achieved by using uncorrupted coefficient(s) or a window of coefficients corresponding to the same spatial location from other subbands.

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Hasan et al., "Subimage Error Concealment Techniques", Proceedings of the 1998 IEEE International Symposium on, vol. 4, pp. 245-248.
Chung et al., "DCT Based Error Concealment for RTSP Video over a Modem Internet Connection", Proceedings of the 1998 IEEE International Symposium on, vol. 6, pp. 518-521.
Lee H--J Et Al: "An Error Concealment Algorithm for Wavelet-Coded Images Over Packet-Switched Networks" Proceeding of the SPIE, XP000770115 p. 226, line 5-12; figure 3 Jul. 1996.
Hemami S S Et Al: "Subband-Coded Image Reconstruction for Loss Y Packet Networks" IEEE Transactions on Image Processing, US, IEEE Inc. New York, vol. 6, No. 4, pp. 523-559 XP000686223 ISSN: 1057-7149 abstract p. 524, paragraph 3 figure 7 Apr. 4, 1997.
PCT International Search Report corresponding to PCT Application PCT/US99/19087.

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