Optimizing QPs for Multiview Image Coding for Free Viewpoint Video
Teleconferencing and other applications of 3D video have become of increasing interest. Besides stereo display, realistic 3D requires also free viewpoint video (FVV), in order to provide adequate motion parallax. One of the most efficient ways of synthesizing FVV of natural scenes is by image based rendering, based on multiview video. A new approach for multiview coding has been recently proposed, and shows that encoding each macroblock of each frame with appropriate quantization parameters (QPs) improves compression by around 2X. The QPs used to acheive such improvement are tuned according to an adhoc relation to the weights used in the synthetic view. In this paper we show that the ad-hoc relation is actually optimum for a Guassian source, and derive the optimum QPs for the generic case.
Copyright © 2007 IEEE. Reprinted from IEEE Communications Society. This material is posted here with permission of the IEEE. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.