그림 1. 360 비디오 부호화 프레임워크 구조[3] Fig. 1. Framework of 360 video coding [3]
그림 2. SSP 투영 Fig. 2. Segmented Sphere Projection (SSP)
그림 3. SSP 패딩 영역[5] Fig. 3. SSP padding regions [5]
그림 4. 제안 SSP 기하학적 패딩을 위한 각 패딩 영역과 해당 적도 영역 Fig. 4. Padding regions and their corresponding equatorial locations in the proposed geometry padding
그림 5. 기존 SSP와 제안하는 기법이 적용된 SSP 영상의 일부 Fig. 5. Parts of 2D images of the conventional SSP and proposed SSP
그림 6. (a) Copy 패딩이 적용된 SSP (b) 제안 패딩 방식이 적용된 SSP (c) SSP상에서의 viewport 영역 Fig. 6. (a) SSP with copy padding (b) SSP with geometry padding (proposed) (c) Viewport region in SSP
표 1. 실험 결과(Anchor: SSP[5]) Table 1. Experimental Results (Anchor: SSP [5])
References
- J. Ohm, M. Wien, "Future Video Coding - Tools and Developments beyond HEVC," in Proc. ICIP 2017, Oct. 2017.
- 360Lib, [Online]. Available at: https://jvet.hhi.fraunhofer.de/svn/svn_360Lib/
- Y. Ye, E. Alshina, and J. Boyce, "Algorithm descriptions of projection format conversion and video quality metrics in 360Lib (Version 5)," Joint Video Exploration Team of ITU-T SG16 WP3 and ISO/IEC JTC1/ SC29/WG11, JVET-H1004, 8th Meeting, Oct. 2017.
- C. Zhang, Y. Lu, J. Li, and Z. Wen, "AHG8: Segmented Sphere Projection for 360-degree video," Joint Video Exploration Team of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11, JVET-E0025, Jan. 2017.
- Y.-H. Lee, H.-C. Lin, J.-L. Lin, S.-K. Chang, C.-C. Ju, "EE4: ERP/EAP-based segmented sphere projection with different padding sizes," Joint Video Exploration Team of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11, JVET-G0097, Jul. 2017.
- HM reference software, [Online]. Available at: https://hevc.hhi.fraunhofer.de/svn/svn_HEVCSoftware/
- J. Boyce, E. Alshina, and D. Zeng, "Subjective testing method for comparison of 360 video projection formats using HEVC," Joint Video Exploration Team of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11, JVET-F1004, Mar. 2017.