Joint Spatial-Temporal Layer Bit Allocation with S-Domain Dependent R-D Modeling

A joint spatial-temporal layer (S-T) bit allocation problem for H.264/SVC is studied with dependent layer rate and distortion (R-D) models. We examine dependent R-D models based on the self-domain} (S-domain) analysis, where the R-D characteristics of a dependent coding unit are expressed as the R-D characteristics of its reference and/or base layers. With the proposed R-D models, the complex inter-layer dependency can be simplified to be a linear sum of functions of a single parameter. The joint bit allocation problem is formulated as an optimization problem by the Lagrangian method, which could be numerically solved using the proposed R-D models. As a result, we develop a low-complexity bit allocation scheme for the combined spatial and temporal scalability of H.264/SVC. It is shown by experimental results that our proposed bit allocation algorithm has achieved the coding performance significantly improved from current reference software JSVM. ? 2011 IEEE.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000298610800068&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Computer Science, Theory & MethodsImaging Science & Photographic TechnologyEICPCI-S(ISTP)