Object wavelet transform for coding of arbitrarily shaped image segments

Author

Katata, Hiroyuki ; Ito, Norio ; Aono, Tomoko ; Kusao, Hiroshi

Author_Institution

Multimedia Bus. Dev. Center, Sharp Corp., Chiba, Japan

Volume

7

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

234

Lastpage

237

Abstract

Object-based coding is one of the most challenging key features which the ISO/IEC MPEG-4 is trying to standardize. One approach to transform an arbitrary shaped image region is addressed. The proposed approach called object-based wavelet transform (OWT), is simple to implement and is a smooth extension of regular wavelet transform (WT). The OWT consist of two phase processes: one is an extrapolation phase for regular WT and the other is a coefficients handling phase for eliminating redundancy caused by the extrapolation. Due to some experimental results, it is confirmed that the method performs the same as other shape-adaptive approaches with low complexity

Keywords

ISO standards; code standards; extrapolation; image coding; image representation; image segmentation; standardisation; telecommunication standards; transform coding; wavelet transforms; ISO/IEC MPEG-4; arbitrarily shaped image segments; arbitrary shaped image region; coefficients; experimental results; extrapolation; image coding; low complexity; object wavelet transform; shape-adaptive approach; standardization; wavelet based object representation; Discrete cosine transforms; Extrapolation; Filtering; IEC standards; ISO standards; Image coding; Image segmentation; Indium tin oxide; Shape; Wavelet transforms;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.554435

Filename

554435