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Conference Paper: A rate-constrained adaptive quantization scheme for wavelet pyramid image coding

TitleA rate-constrained adaptive quantization scheme for wavelet pyramid image coding
Authors
KeywordsElectronics
Issue Date1996
PublisherIEEE.
Citation
The 1996 IEEE International Symposium on Circuits and Systems, Atlanta, GA., 12-15 May 1996. In IEEE International Symposium on Circuits and Systems Proceedings, 1996, v. 2, p. 636-639 How to Cite?
AbstractIt is well known that orthogonal wavelet transform with filters of nonlinear phase gives poor visual results in low bit rate image coding. Biorthogonal wavelet is a good substitute, which is, however essentially nonorthogonal. A greedy steepest descend algorithm is proposed to design an adaptive quantization scheme based on the actual statistics of the input image. Since the L2 norm of the quantization error is not preserved through the nonorthogonal transform, a quantization error estimation formula considering the characteristic value of the reconstruction filters is derived to incorporate the adaptive quantization scheme. Computer simulation results demonstrate significant SNR gains over standard coding technique, and comparable visual improvements.
DescriptionConference theme: Connecting the World
Persistent Identifierhttp://hdl.handle.net/10722/45954
ISSN

 

DC FieldValueLanguage
dc.contributor.authorNi, JQen_HK
dc.contributor.authorHo, KLen_HK
dc.contributor.authorTse, KWen_HK
dc.date.accessioned2007-10-30T06:39:22Z-
dc.date.available2007-10-30T06:39:22Z-
dc.date.issued1996en_HK
dc.identifier.citationThe 1996 IEEE International Symposium on Circuits and Systems, Atlanta, GA., 12-15 May 1996. In IEEE International Symposium on Circuits and Systems Proceedings, 1996, v. 2, p. 636-639en_HK
dc.identifier.issn0271-4302en_HK
dc.identifier.urihttp://hdl.handle.net/10722/45954-
dc.descriptionConference theme: Connecting the World-
dc.description.abstractIt is well known that orthogonal wavelet transform with filters of nonlinear phase gives poor visual results in low bit rate image coding. Biorthogonal wavelet is a good substitute, which is, however essentially nonorthogonal. A greedy steepest descend algorithm is proposed to design an adaptive quantization scheme based on the actual statistics of the input image. Since the L2 norm of the quantization error is not preserved through the nonorthogonal transform, a quantization error estimation formula considering the characteristic value of the reconstruction filters is derived to incorporate the adaptive quantization scheme. Computer simulation results demonstrate significant SNR gains over standard coding technique, and comparable visual improvements.en_HK
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE International Symposium on Circuits and Systems Proceedings-
dc.rights©1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectElectronicsen_HK
dc.titleA rate-constrained adaptive quantization scheme for wavelet pyramid image codingen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0271-4302&volume=2&spage=636&epage=639&date=1996&atitle=A+rate-constrained+adaptive+quantization+scheme+for+wavelet+pyramid+image+codingen_HK
dc.identifier.emailHo, KL: klho@eee.hku.hk-
dc.identifier.emailTse, KW: kwtse@eee.hku.hk-
dc.identifier.authorityHo, KL=rp00117-
dc.identifier.authorityTse, KW=rp00180-
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/ISCAS.1996.541805en_HK
dc.identifier.scopuseid_2-s2.0-0029724099-
dc.identifier.hkuros13272-
dc.identifier.volume2-
dc.identifier.spage636-
dc.identifier.epage639-
dc.identifier.scopusauthoridNi, JQ=7201636714-
dc.identifier.scopusauthoridHo, KL=7403581592-
dc.identifier.scopusauthoridTse, KW=7102609851-
dc.customcontrol.immutablesml 151116 - merged-

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