Animation data compression in MPEG-4: interpolators

Author

Kim, James D K ; Jung, Seok Yoon ; Han, Mahnjin ; Jang, Euee S. ; Woo, Sang Oak ; Lee, Shin Jun ; Gyeong Ja Jang

Author_Institution

Multimedia Lab., Samsung Adv. Inst. of Technol., South Korea

Volume

3

fYear

2002

fDate

2002

Abstract

In this paper, we propose new technologies to compress the interpolator nodes in VRML/MPEG-4 BIFS (binary format for scene). Interpolators are used to animate the 3D objects in a VRML/MPEG-4 BIFS scene. For interactive applications with quite a few animated 3D synthetic objects, two components are dominant in the amount of data to represent the animation: 3D object and its animation. In the current MPEG-4, 3D model coding (3DMC) yields a high compression ratio with reasonable quality for the 3D object, while predictive MFField coding (PMFC) yields a moderate compression ratio with reasonable quality for the animation data. The proposed techniques are to provide a high compression on animation data and have been adopted to MPEG-4 system amendment 4 (AFX/MUW).

Keywords

code standards; computer animation; data compression; image coding; interpolation; virtual reality languages; 3D model coding; 3D objects; 3D synthetic objects; AFX/MUW; BIFS; MPEG-4; VRML; animation data compression; binary format for scene; compression ratio; interactive applications; interpolators; predictive MFField coding; system amendment 4; Animation; Data compression; Decoding; Encoding; Interpolation; Layout; Linear approximation; MPEG 4 Standard; Predictive models; Redundancy;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing. 2002. Proceedings. 2002 International Conference on

ISSN

1522-4880

Print_ISBN

0-7803-7622-6

Type

conf

DOI

10.1109/ICIP.2002.1038896

Filename

1038896