Shape-adaptive region partitioning method for shape-assisted block-based texture coding

Author

Moon, Joo-Hee ; Park, Gwang-Hoon ; Chun, Sung-Moon ; Choi, Seok-Rim

Author_Institution

Inf. & Telcommun. R&D Center, Hyundao Electron. Ind. Co. Ltd., Kyoungki, South Korea

Volume

7

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

240

Lastpage

246

Abstract

In the content-based image coding scheme, segmentation information of the arbitrarily shaped regions may be available for both encoder and decoder. The shape-assisted block-based texture coding methodologies, such as shape-adaptive discrete cosine transform (SADCT), can use this segmentation information to improve the coding efficiency. We introduce the shape-adaptive region partitioning (SARP) methods which can reduce the number of coding blocks that partition the arbitrarily shaped region by modifying the block positions. By simply adding the SARP method to aid the SADCT, the coded texture bits can be reduced by 5-10%, in comparison with the SADCT using a common block-based coding infrastructure which is usual for MPEG-1/2 and H.263

Keywords

adaptive codes; adaptive signal processing; discrete cosine transforms; image segmentation; image texture; transform coding; video coding; H.263; MPEG-1; MPEG-2; coded texture bit reduction; coding efficiency; content based image coding; decoder; encoder; image segmentation information; shape adaptive discrete cosine transform; shape adaptive region partitioning method; shape assisted block based texture coding; video coding; Decoding; Discrete cosine transforms; Image coding; Image segmentation; Moon; Motion estimation; Multidimensional signal processing; Multimedia systems; Signal processing algorithms; Video signal processing;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.554437

Filename

554437