Object-oriented video coding algorithm for very low bit-rate system

Author

Chen, Liang-Gee ; Chiu, You-Ming ; Chiueh, Tzi-Dar ; Jong, Her-Ming

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

1994

fDate

5-8 Dec 1994

Firstpage

614

Lastpage

618

Abstract

In this paper, a video coding method based on region segmentation is proposed. It is designed for very low bit-rate systems such as video-phone and video-conferencing. Instead of block-based coding, we adopt an object-oriented approach, which first calculates the motion vector of each pixel using a modified optical flow approach, then segments the motion field into circumscribed rectangular regions that can be efficiently coded. Simulation results of several typical image sequences reveal that the proposed algorithm is both effective and of high performance

Keywords

image segmentation; image sequences; motion estimation; object-oriented methods; teleconferencing; video coding; videotelephony; circumscribed rectangular regions; image sequences; low bit-rate system; modified optical flow approach; motion vector; object-oriented video coding; region segmentation; videoconferencing; videophones; Cost function; Degradation; Image motion analysis; Image segmentation; Image sequences; Motion estimation; Object oriented modeling; Particle beam optics; Video coding; Videoconference;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on

Conference_Location

Taipei

Print_ISBN

0-7803-2440-4

Type

conf

DOI

10.1109/APCCAS.1994.514622

Filename

514622