Bitplane-by-bitplane shift (BbBShift) - A suggestion for JPEG2000 region of interest image coding

Author

Wang, Zhou ; Bovik, Alan C.

Author_Institution

Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA

Volume

9

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

160

Lastpage

162

Abstract

The JPEG2000 image coding standard defines two kinds of region of interest (ROI) coding methods-the general scaling based method and the maximum shift (maxshift) method. The former requires shape coding of the ROIs, which leads to increased complexity of codec implementations and limits the choice of ROI shapes (currently, only rectangle and ellipse shapes are defined). The latter allows for arbitrarily shaped ROI coding without explicitly transmitting any shape information to the decoder, but does not have the flexibility to select an arbitrary scaling value to define the relative importance of the ROI and the background wavelet coefficients. We propose a bitplane-by-bitplane shift (BbBShift) method, which supports both arbitrary ROI shape and arbitrary scaling without shape coding.

Keywords

code standards; data compression; decoding; image coding; telecommunication standards; transform coding; wavelet transforms; JPEG2000 region of interest image coding; ROI shapes; background wavelet coefficients; bitplane-by-bitplane shift method; codec; decoder; ellipse; image coding standard; maximum shift method; maxshift method; rectangle; scaling based method; shape coding; Code standards; Codecs; Decoding; Frequency; Image coding; Image reconstruction; Instruments; Shape; Wavelet coefficients; Wavelet transforms;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2002.1009009

Filename

1009009