Use of second-order derivative-based smoothness measure for error concealment in transform-based codecs

Wenwu Zhu, Yao Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we study the recovery of lost or erroneous transform coefficients in image communication systems employing block transform codecs. Previously, Wang et al. have developed a technique that exploits the smoothness property of image signals, and recovered the damaged blocks by maximizing a smoothness measure. There the first order derivative was used as the smoothness measure, which can lead to the blurring of sharp edges. In order to alleviate the edge blurring problem of this method, in this paper, we study the use of second order derivatives as the smoothness measure, including the quadratic variation and the Laplacian operators. Our simulation results show that a weighted combination of the quadratic variation and the Laplacian operator can significantly reduce the blurring across the edges while enforcing smoothness along the edges.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages1205-1214
Number of pages10
Volume2501
Edition2/-
ISBN (Print)0819418587
StatePublished - 1995
EventVisual Communications and Image Processing '95 - Taipei, Taiwan
Duration: May 24 1995May 26 1995

Other

OtherVisual Communications and Image Processing '95
CityTaipei, Taiwan
Period5/24/955/26/95

Fingerprint

blurring
Mathematical transformations
Derivatives
Image communication systems
Recovery
operators
telecommunication
recovery
coefficients
simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Zhu, W., & Wang, Y. (1995). Use of second-order derivative-based smoothness measure for error concealment in transform-based codecs. In Proceedings of SPIE - The International Society for Optical Engineering (2/- ed., Vol. 2501, pp. 1205-1214). Society of Photo-Optical Instrumentation Engineers.

Use of second-order derivative-based smoothness measure for error concealment in transform-based codecs. / Zhu, Wenwu; Wang, Yao.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2501 2/-. ed. Society of Photo-Optical Instrumentation Engineers, 1995. p. 1205-1214.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhu, W & Wang, Y 1995, Use of second-order derivative-based smoothness measure for error concealment in transform-based codecs. in Proceedings of SPIE - The International Society for Optical Engineering. 2/- edn, vol. 2501, Society of Photo-Optical Instrumentation Engineers, pp. 1205-1214, Visual Communications and Image Processing '95, Taipei, Taiwan, 5/24/95.
Zhu W, Wang Y. Use of second-order derivative-based smoothness measure for error concealment in transform-based codecs. In Proceedings of SPIE - The International Society for Optical Engineering. 2/- ed. Vol. 2501. Society of Photo-Optical Instrumentation Engineers. 1995. p. 1205-1214
Zhu, Wenwu ; Wang, Yao. / Use of second-order derivative-based smoothness measure for error concealment in transform-based codecs. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2501 2/-. ed. Society of Photo-Optical Instrumentation Engineers, 1995. pp. 1205-1214
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