Image coding with the MAP criterion

Summary, in English

BCJR based source coding of image residuals is investigated. From a trellis representation of the residual, a joint source-channel coding system is formed. Then the BCJR algorithm is applied to find the MAP encoding. MAP and minimized squared error encoding are compared. The novelty of this work is the use of the BCJR algorithm and the MAP criterion in the source coding procedure. The source encoding system described preserves more features than an MSE based encoder. Also, blocking artifacts are reduced.

• Författare: Tomas Eriksson; Mirek Novak; John B Anderson
• Avdelning/ar: Institutionen för elektro- och informationsteknik
• Publiceringsår: 2002
• Språk: Engelska
• Sidor: 453-453
• Publikation/Tidskrift/Serie: Proceedings, IEEE 2002 Data Compression Conference
• Fulltext: - 65 kB; Download statistics
• Länkar: http://dx.doi.org/10.1109/DCC.2002.999996
• Dokumenttyp: Konferensbidrag
• Förlag: IEEE - Institute of Electrical and Electronics Engineers Inc.
• Ämne: Electrical Engineering, Electronic Engineering, Information Engineering
• Nyckelord: minimized squared error encoding; decorrelation procedure; convolutional codes; MAP criterion; image coding; maximum a posteriori probability criterion; image residuals; source coding; trellis representation; joint source-channel coding; BCJR algorithm; Bahl-Cocke-Jelinek-Raviv algorithm
• Conference name: Proceedings DCC 2002 Data Compression Conference
• Conference date: 2002-04-02 - 2002-04-04
• Conference place: Snowbird, UT, United States
• Status: Published
• Projekt: Informations- och kommunikationsteori: Data- och bildkompression
• Forskningsgrupp: Informations- och kommunikationsteori
• ISBN/ISSN/Övrigt: ISBN: 0-7695-1477-4