Title :
Improved adaptive temporal inter-/extrapolation schemes for distributed video coding
Author :
Hänsel, Ralph ; Müller, Erika
Author_Institution :
Inst. of Commun. Engeneering, Univ. of Rostock, Rostock, Germany
Abstract :
Distributed video coding (DVC) gained a lot of research interest in the last decade, due to its high potential for emerging application scenarios. The RD-performance of a DVC coding scheme is mainly influenced by the side information (SI) quality. It is commonly generated by temporal interpolation (TI). TI fails in areas of occlusion or revelation. Therefore, we propose an Adaptive Pixel-based Temporal Interpolation (APBTI) scheme. It adaptively switches between TI and forward-/backward temporal extrapolation. The additionally proposed APBTI2 applies motion vector field extrapolation to solve the problem for non-linear motion. Simulation results show that the SI quality as well as the overall RD-performance is improved by up to 1.2 dB and 0.5dB respectively.
Keywords :
extrapolation; interpolation; video coding; RD-performance; adaptive pixel-based temporal interpolation; adaptive temporal extrapolation schemes; adaptive temporal interpolation schemes; distributed video coding; motion vector field extrapolation; nonlinear motion; side information quality; Encoding; Extrapolation; Interpolation; Motion estimation; Silicon; Vectors; Video coding;
Conference_Titel :
Picture Coding Symposium (PCS), 2012
Conference_Location :
Krakow
Print_ISBN :
978-1-4577-2047-5
Electronic_ISBN :
978-1-4577-2048-2
DOI :
10.1109/PCS.2012.6213330
