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Edge-adaptive upsampling of depth map videos for enhanced free viewpoint video quality

journal contribution
posted on 10.10.2016 by Erhan Ekmekcioglu, Marta Mrak, Stewart T. Worrall, Ahmet Kondoz
Quality enhancement of free-viewpoint videos is addressed for 3D video systems that use the colour texture video plus depth map representation format. More specifically, a novel and efficient shape adaptive filter is presented for upsampling depth map videos that are of lower resolution than their colour texture counterparts. Either measurement or estimation of depth map videos can take place at lower resolution. At the same time, depth map reconstruction takes place at low resolution if reduced resolution compression techniques are utilised. The proposed design is based on the observation that significant transitions in depth intensity across depth map frames influence the overall quality of generated free-viewpoint videos. Hence, sharpness and accuracy in the free-viewpoint videos rendered using 3D geometry via depth maps, especially across object borders, are targeted. Accordingly, significant enhancement of rendered free-viewpoint video quality is obtained when the proposed method is applied on top of MPEG spatial scalability filters.

History

School

  • Loughborough University London

Published in

Electronics letters

Volume

45

Issue

7

Pages

353 - 354

Citation

EKMEKCIOGLU, E. ... et al., 2009. Edge-adaptive upsampling of depth map videos for enhanced free viewpoint video quality. Electronics letters, 45 (7), pp.353-354.

Publisher

© IET

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2009

Notes

Closed access.

ISSN

0013-5194

eISSN

1350-911X

Language

en

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