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Bit-Plane Coding in Extractable Source Coding: Optimality, Modeling, and Application to 360° Data

Fangping Ye 1, 2 Navid Mahmoudian Bidgoli 3 Elsa Dupraz 2, 1 Aline Roumy 4 Karine Amis 5, 1 Thomas Maugey 4
2 Lab-STICC_CODES - Equipe CODES
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance : UMR6285
4 Sirocco - Analysis representation, compression and communication of visual data
Inria Rennes – Bretagne Atlantique , IRISA-D5 - SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE
5 Lab-STICC_COSYDE - Equipe Communication System Design
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance : UMR6285
Abstract : In extractable source coding, multiple correlated sources are jointly compressed but can be individually accessed in the compressed domain. Performance is measured in terms of storage and transmission rates. This problem has multiple applications in interactive video compression such as Free Viewpoint Television or navigation in 360° videos. In this letter, we analyze and improve a practical coding scheme. We consider a binarized coding scheme, which insures a low decoding complexity. First, we show that binarization does not impact the transmission rate but only slightly the storage with respect to a symbol based approach. Second, we propose a Q-ary symmetric model to represent the pairwise joint distribution of the sources instead of the widely used Laplacian model. Third, we introduce a novel pre-estimation strategy, which allows to infer the symbols of some bit planes without any additional data and therefore permits to reduce the storage and transmission rates. In the context of 360° images, the proposed scheme allows to save 14% and 34% bitrate in storage and transmission rates respectively.
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https://hal-imt-atlantique.archives-ouvertes.fr/hal-03294082
Contributor : Karine Amis Connect in order to contact the contributor
Submitted on : Wednesday, July 21, 2021 - 2:03:41 PM
Last modification on : Friday, April 8, 2022 - 4:04:02 PM

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Fangping Ye, Navid Mahmoudian Bidgoli, Elsa Dupraz, Aline Roumy, Karine Amis, et al.. Bit-Plane Coding in Extractable Source Coding: Optimality, Modeling, and Application to 360° Data. IEEE Communications Letters, Institute of Electrical and Electronics Engineers, 2021, 25 (5), pp.1412-1416. ⟨10.1109/LCOMM.2021.3050932⟩. ⟨hal-03294082⟩

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