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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/22762

Title: Selective motion vector redundancies for improved error resilience in HEVC
Authors: Carreira, Joao F.M.
Ekmekcioglu, Erhan
Kondoz, Ahmet
Assuncao, Pedro A.A.
Faria, Sergio M.M.
De Silva, Demuni V.S.X.
Keywords: HEVC
Error resilience
Motion vectors redundancy
Issue Date: 2014
Publisher: © IEEE
Citation: CARREIRA, J. ... et al., 2014. Selective motion vector redundancies for improved error resilience in HEVC. IN: Proceedings of 2014 IEEE International Conference on Image Processing (ICIP 2014), Paris, France, 27-30 October 2014, pp.2457-2461.
Abstract: This paper addresses the problem caused by motion vector coding dependencies on the error resilience performance of the emergent High Efficiency Video Coding (HEVC) standard. We propose a method based on the prediction dependency of motion vectors (MV) to select the most relevant ones for redundant coding with reduced overhead. The spatial dependencies are analysed in the encoder to prioritise the MVs that should be selected for redundancy, based on the number of subsequent dependent coding units. Then, a subset of prioritised MVs is transmitted as redundancy (referred to as side information in the paper), to reduce the use and propagation of mismatched MV predictions in case of transmission errors or data loss. The simulation results show that the proposed MV selection method can effectively identify the most relevant motion field, achieving improved error robustness with a reduced redundancy overhead. Exploiting only 30% of the generated MVs for redundancy, average quality gains of up to 1 dB are achieved compared to a uniform MV selection scheme, and up to 2 dB compared to the original HEVC standard with no redundant encoded information.
Description: Closed access.
Version: Published
DOI: ICIP.2014.7025497
URI: https://dspace.lboro.ac.uk/2134/22762
Publisher Link: http://dx.doi.org/10.1109/ICIP.2014.7025497
ISBN: 9781479957514
Appears in Collections:Closed Access (Loughborough University London)

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