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research article

Fast encoding techniques for Multiview Video Coding

Khattak, S.
•
Hamzaoui, R.
•
Ahmad, S.
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2013
Signal Processing Image Communications

Multiview Video Coding (MVC) is a technique that permits efficient compression of multiview video. MVC uses variable block size motion and disparity estimation for block matching. This requires an exhaustive search process that involves all possible macro-block partition sizes. We analyze the time complexity of MVC and the methods that have been proposed to speed up motion and disparity estimation. We then propose two new methods: Previous Disparity Vector Disparity Estimation (PDV-DE) and Stereo-Motion Consistency Constraint Motion and Disparity Estimation (SMCC-MDE). PDV-DE exploits the correlation between temporal levels and disparity vectors to speed up the disparity estimation process while SMCC-MDE exploits the geometrical relationship of consecutive frame pairs to speed up motion and disparity estimation. We build a complete low complexity MVC encoding solution that combines our two methods with complementary previous methods to speed up motion and disparity search. We evaluate the complexity of our solution in terms of encoding time and number of search points. Our experimental results show that our solution can reduce the encoding time and number of search points of the standard MVC implementation (JMVM 6.0) using the fast TZ search mode up to 93.7% and 96.9%, respectively, with negligible degradation in the rate-distortion performance. Compared to the best published results, this is an improvement of up to 11% and 7%, respectively. (C) 2013 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.image.2012.12.010
Web of Science ID

WOS:000320418100002

Author(s)
Khattak, S.
•
Hamzaoui, R.
•
Ahmad, S.
•
Frossard, P.  
Date Issued

2013

Publisher

Elsevier Science Bv

Published in
Signal Processing Image Communications
Volume

28

Issue

6

Start page

569

End page

580

Subjects

Multiview Video Coding

•

Disparity estimation

•

Motion estimation

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS4  
Available on Infoscience
October 1, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/95848
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