Title :
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
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;
Conference_Titel :
Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-2440-4
DOI :
10.1109/APCCAS.1994.514622
