Synchronous and asynchronous multiple object rate control for MPEG-4 video coding

Video scenes containing multiple objects can potentially achieve higher degree of compression and better visual quality with individual coding for each object. Not always are video objects synchronous, implying each object may have a separate temporal resolution. This paper proposes a rate control algorithm for multiple video object encoding. Using a novel bit allocation strategy, the algorithm achieves accurate target hit rate, provides good visual quality, and decreases buffer overflowlunderflow. Experimental results for both synchronous and asynchronous multiple video object encoding demonstrate that, when compared with the existing rate control scheme recommended by the MPEG-4 standard, the proposed algorithm provide bener temporal-spatial tradeoff with more accurate rate regulation.

• Type: Conference
• Year: 2003
• Where: ICIP
• Authors: Yu Sun, Ishfaq Ahmad, Jiancong Luo, Xiaohui Wei
• Keywords: Accurate Rate Regulation, ICIP 2003, Image Processing, Multiple Video Object, Object Encoding Demonstrate, Rate Control Algorithm, Rate Control Scheme