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JBE, vol. 24, no. 1, pp.25-31, January, 2019
Geometry Padding for Segmented Sphere Projection (SSP) in 360 Video
Hyun-Ho Kim, Sang-Jin Myeong, Yong-Uk Yoon, and Jae-Gon Kim
C.A E-mail: firstname.lastname@example.org
360 video is attracting attention as immersive media, and is also considered in VVC (Versatile Video Coding), which is being developed in JVET (Joint Video Expert Team) as a new video coding standard of post-HEVC. A 2D image projected from 360 video for its compression may has discontinuities between the projected faces and inactive regions, and they may cause the visual artifacts in the reconstructed video as well as decrease of coding efficiency. In this paper, we propose a method of efficient geometric padding to reduce these discontinuities and inactive regions in the projection format of SSP (Segmented Sphere Projection). Experimental results show that the proposed method improves subjective quality compared to the existing padding of SSP that uses copy padding with minor loss of coding gain.
Keyword: Versatile Video Coding (VVC), JVET, 360 video, visual artifact, padding
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