Recursive block splitting in feature-driven decoder-side depth estimation
[ 1 ] Instytut Telekomunikacji Multimedialnej, Wydział Informatyki i Telekomunikacji, Politechnika Poznańska | [ P ] employee
2022
scientific article
english
- decoder-side depth estimation
- immersive video
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.
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