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Article


Title

Recursive block splitting in feature-driven decoder-side depth estimation

Authors

[ 1 ] Wydział Informatyki i Telekomunikacji, Politechnika Poznańska | [ 2 ] Instytut Telekomunikacji Multimedialnej, Wydział Informatyki i Telekomunikacji, Politechnika Poznańska | [ S ] student | [ P ] employee

Scientific discipline (Law 2.0)

[2.3] Information and communication technology

Year of publication

2022

Published in

ETRI Journal

Journal year: 2022 | Journal volume: vol. 44 | Journal number: iss. 1

Article type

scientific article

Publication language

english

Keywords
EN
  • decoder-side depth estimation
  • immersive video
Abstract

EN This paper presents a study on the use of encoder-derived features in decoder-side depth estimation. The scheme of multiview video encoding does notrequire the transmission of depth maps (which carry the geometry of a three-dimensional scene) as only a set of input views and their parameters are com-pressed and packed into the bitstream, with a set of features that could make iteasier to estimate geometry in the decoder. The paper proposes novel recursiveblock splitting for the feature extraction process and evaluates different scenar-ios of feature-driven decoder-side depth estimation, performed by assessingtheir influence on the bitrate of metadata, quality of the reconstructed video,and time of depth estimation. As efficient encoding of multiview sequencesbecame one of the main scopes of the video encoding community, the experi-mental results are based on the “geometry absent” profile from the incomingMPEG Immersive video standard. The results show that the quality of synthe-sized views using the proposed recursive block splitting outperforms that ofthe state-of-the-art approach.

Pages (from - to)

38 - 50

DOI

10.4218/etrij.2021-0308

URL

https://doi.org/10.4218/etrij.2021-0308

License type

other

Open Access Text Version

final published version

Points of MNiSW / journal

40.0

Impact Factor

1.347 [List 2020]

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