Omnidirectional video coding using latitude adaptive down-sampling and pixel rearrangement

S. H. Lee; S. T. Kim; E. Yip; B. D. Choi; J. Song; S. J. Ko

doi:10.1049/el.2017.0035

Omnidirectional video coding using latitude adaptive down-sampling and pixel rearrangement

S. H. Lee, S. T. Kim, E. Yip, B. D. Choi, J. Song, S. J. Ko

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Projection of omnidirectional videos in the spherical domain onto the planar domain is required to utilise existing video compression techniques. Due to its simplicity, the equirectangular projection (ERP) method has been widely adopted for sphere-to-plane mapping. However, the coding efficiency of the ERP method is inefficient because the ERP video includes visual redundancies in the high latitude areas of the sphere. To solve this problem, this Letter presents an efficient data compression scheme that employs latitude adaptive down-sampling followed by pixel rearrangement. Experimental results show that the proposed method can achieve a bitrate reduction of up to 28.9%, as compared with the ERP.

Original language	English
Pages (from-to)	655-657
Number of pages	3
Journal	Electronics Letters
Volume	53
Issue number	10
DOIs	https://doi.org/10.1049/el.2017.0035
Publication status	Published - 2017

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© The Institution of Engineering and Technology 2017.

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1049/el.2017.0035

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abstract = "Projection of omnidirectional videos in the spherical domain onto the planar domain is required to utilise existing video compression techniques. Due to its simplicity, the equirectangular projection (ERP) method has been widely adopted for sphere-to-plane mapping. However, the coding efficiency of the ERP method is inefficient because the ERP video includes visual redundancies in the high latitude areas of the sphere. To solve this problem, this Letter presents an efficient data compression scheme that employs latitude adaptive down-sampling followed by pixel rearrangement. Experimental results show that the proposed method can achieve a bitrate reduction of up to 28.9%, as compared with the ERP.",

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AU - Kim, S. T.

AU - Yip, E.

AU - Choi, B. D.

AU - Song, J.

AU - Ko, S. J.

PY - 2017

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AB - Projection of omnidirectional videos in the spherical domain onto the planar domain is required to utilise existing video compression techniques. Due to its simplicity, the equirectangular projection (ERP) method has been widely adopted for sphere-to-plane mapping. However, the coding efficiency of the ERP method is inefficient because the ERP video includes visual redundancies in the high latitude areas of the sphere. To solve this problem, this Letter presents an efficient data compression scheme that employs latitude adaptive down-sampling followed by pixel rearrangement. Experimental results show that the proposed method can achieve a bitrate reduction of up to 28.9%, as compared with the ERP.

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ER -

Omnidirectional video coding using latitude adaptive down-sampling and pixel rearrangement

Abstract

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