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Proceedings Paper

Stereo side information generation in low-delay distributed stereo video coding
Author(s): Matteo Salmistraro; Søren Forchhammer
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Paper Abstract

Distributed Video Coding (DVC) is a technique that allows shifting the computational complexity from the encoder to the decoder. One of the core elements of the decoder is the creation of the Side Information (SI), which is a hypothesis of what the to-be-decoded frame looks like. Much work on DVC has been carried out: often the decoder can use future and past frames in order to obtain the SI exploiting the time redundancy. Other work has addressed a Multiview scenario; exploiting the frames coming from cameras close to the one we are decoding (usually a left and right camera) it is possible to create SI exploiting the inter-view spatial redundancy. A careful fusion of the two SI should be done in order to use the best part of each SI. In this work we study a Stereo Low-Delay scenario using only two views. Due to the delay constraint we use only past frames of the sequence we are decoding and past and present frames of the other. This is done by using Extrapolation, to exploit the time redundancy and well known techniques for stereo error concealment. This allows us to create good quality SI even if we are only using two views. In this work we have also used a new method in order to fuse the two SIs, inspired by Multi-Hypothesis decoding. In this work the multiple hypotheses are used to fuse the SIs. Preliminary results show improvements up to 1 Βd.

Paper Details

Date Published: 15 October 2012
PDF: 10 pages
Proc. SPIE 8499, Applications of Digital Image Processing XXXV, 84990P (15 October 2012); doi: 10.1117/12.929230
Show Author Affiliations
Matteo Salmistraro, Technical Univ. of Denmark (Denmark)
Søren Forchhammer, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 8499:
Applications of Digital Image Processing XXXV
Andrew G. Tescher, Editor(s)

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