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A Fully Scalable Motion Model for Scalable Video Coding

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2 Author(s)
Meng-Ping Kao ; Dept. of Electr. & Comput. Eng., Univ. of California San Diego, La Jolla, CA ; Truong Nguyen

Motion information scalability is an important requirement for a fully scalable video codec, especially for decoding scenarios of low bit rate or small image size. So far, several scalable coding techniques on motion information have been proposed, including progressive motion vector precision coding and motion vector field layered coding. However, it is still vague on the required functionalities of motion scalability and how it collaborates flawlessly with other scalabilities, such as spatial, temporal, and quality, in a scalable video codec. In this paper, we first define the functionalities required for motion scalability. Based on these requirements, a fully scalable motion model is proposed along with tailored encoding techniques to minimize the coding overhead of scalability. Moreover, the associated rate distortion optimized motion estimation algorithm will be provided to achieve better efficiency throughout various decoding scenarios. Simulation results will be presented to verify the superiorities of proposed scalable motion model over nonscalable ones.

Published in:

Image Processing, IEEE Transactions on  (Volume:17 ,  Issue: 6 )