Print Email Facebook Twitter Spatial multiple description coding for scalable video streams Title Spatial multiple description coding for scalable video streams Author Choupani, R. Wong, S. Tolun, M. Faculty Electrical Engineering, Mathematics and Computer Science Department Software Computer Technology Date 2014-08-25 Abstract The need for adapting video stream delivery over heterogeneous and unreliable networks requires self-adaptive and error resilient coding. Network bandwidth fluctuations can be handled by means of a video coding scheme which adapts to the channel conditions. However, packet losses which are frequent in wireless networks can cause a mismatch during the reconstruction in the receiver end and result in an accumulation of errors which deteriorates the quality of the delivered video. A combination of multiple description coding in pixel domain and scalable video coding schemes which addresses both video adaptation and robustness to data loss is proposed in this paper. The proposed scheme combines error concealment with spatial video scalability. In order to improve the fidelity of the reconstructed to the original frames in presence of packet loss, a multilayer polyphase spatial decomposition algorithmis proposed. Classical multiple description methods interpolate themissing data which results in smoothing and artifact at object boundaries. The proposed algorithm addresses the quality degradation due to low-pass filtering effect of interpolation methods.We also comparatively analyze the trade-off between robustness to channel errors and coding efficiency. To reference this document use: http://resolver.tudelft.nl/uuid:5ed40794-90af-46c6-a9a8-e67b93c50ea2 ISSN 1687-7578 Source International Journal of Digital Multimedia Broadcasting, art. nr.: 132621, 2014 Part of collection Institutional Repository Document type journal article Rights © 2014 Roya Choupani et al.This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Files PDF 317101.pdf 1.72 MB Close viewer /islandora/object/uuid:5ed40794-90af-46c6-a9a8-e67b93c50ea2/datastream/OBJ/view