Abstract
This paper describes a bit allocation algorithm to achieve a constant bit rate when coding multiple video objects (MVO's), while improving the rate-distortion (R-D) performance over the reference method for MPEG-4 object-based rate control [1,2]. In object-based coding, bit allocation is performed at the object level and temporal rates of different objects may vary. In this paper, we deal with these two issues. We pay particular attention to maintenance of buffer occupancy levels and propose a new method for spatio-temporal trade-offs for object-based coding. The proposed algorithm is able to successfully achieve the target bit rate, effectively code arbitrarily-shaped MVO's with different temporal rates, and maintain a stable buffer level.
Original language | English (US) |
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Title of host publication | IEEE International Conference on Image Processing |
Volume | 3 |
State | Published - 2002 |
Event | International Conference on Image Processing (ICIP'02) - Rochester, NY, United States Duration: Sep 22 2002 → Sep 25 2002 |
Other
Other | International Conference on Image Processing (ICIP'02) |
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Country/Territory | United States |
City | Rochester, NY |
Period | 9/22/02 → 9/25/02 |
ASJC Scopus subject areas
- Computer Vision and Pattern Recognition
- Hardware and Architecture
- Electrical and Electronic Engineering