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Wyner-Ziv side information generation using a higher order piecewise trajectory temporal interpolation algorithm

Akinola, Mobolaji; Dooley, Laurence and Wong, Patrick (2010). Wyner-Ziv side information generation using a higher order piecewise trajectory temporal interpolation algorithm. In: 2010 International Conference on Graphic and Image Processing (ICGIP 2010), 4-5 Dec 2010, Manila, Philippines.

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Abstract

Distributed video coding (DVC) reverses the traditional coding paradigm of complex encoders allied with basic decoding, to one where the computational cost is largely incurred by the decoder. This enables low-cost, resource-poor sensors to be used at the transmitter in various applications including multi-sensor surveillance. A key constraint governing DVC performance is the quality of side information (SI), a coarse representation of original video frames which are not available at the decoder. Techniques to generate SI have generally been based on linear temporal interpolation, though these do not always produce satisfactory SI quality especially in sequences exhibiting asymmetric (non-linear) motion. This paper presents a higher-order piecewise trajectory temporal interpolation (HOPTTI) algorithm for SI generation that quantitatively and perceptually affords better SI quality in comparison to existing temporal interpolation-based approaches.

Item Type: Conference Item
Copyright Holders: 2010 The Authors
Keywords: distributed video coding (DVC); side information (SI); Wyner-Ziv; trajectory; interpolation
Academic Unit/Department: Mathematics, Computing and Technology > Computing & Communications
Mathematics, Computing and Technology > Computing & Communications
Interdisciplinary Research Centre: Centre for Research in Computing (CRC)
Item ID: 23368
Depositing User: Mobolaji Akinola
Date Deposited: 04 Oct 2010 15:01
Last Modified: 11 Dec 2012 21:50
URI: http://oro.open.ac.uk/id/eprint/23368
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