Rate Control for Multi-Object Video Transmission Over Wireless Systems

Object based coding can potentially achieve a higher degree of compression and better visual quality. This paper proposes a multiple object rate control algorithm for video transmissions over wireless systems. The algorithm adopts an efficient bit allocation strategy to intelligently allocates more bits to important objects, while adapts to time-varying wireless channels. Simulation results for both wireless downlink and uplink channels demonstrate that the proposed algorithm effectively improves perceptual quality on important objects, significantly reduces VOP (Video Object Plane in MPEG-4) skipping and thereby, maintains the motion continuity in wireless video transmissions.