Efficient Methods of Inactive Regions Padding for Segmented Sphere Projection (SSP) of 360 Video
Summary :
In this letter, methods of inactive regions padding for Segmented Sphere Projection (SSP) of 360 videos are proposed. A 360 video is projected onto a 2D plane to be coded with diverse projection formats. Some projection formats have inactive regions in the converted 2D plane such as SSP. The inactive regions may cause visual artifacts as well as coding efficiency decrease due to discontinuous boundaries between active and inactive regions. In this letter, to improve coding efficiency and reduce visual artifacts, the inactive regions are padded by using two types of adjacent pixels in either rectangular-face or circle-face boundaries. By padding the inactive regions with the highly correlated adjacent pixels, the discontinuities between active and inactive regions are reduced. The experimental results show that, in terms of end-to-end Weighted to Spherically uniform PSNR (WS-PSNR), the proposed methods achieve 0.3% BD-rate reduction over the existing padding method for SSP. In addition, the visual artifacts along the borders between discontinuous faces are noticeably reduced.
- Publication
- IEICE TRANSACTIONS on Information Vol.E101-D No.11 pp.2836-2839
- Publication Date
- 2018/11/01
- Publicized
- 2018/08/20
- Online ISSN
- 1745-1361
- DOI
- 10.1587/transinf.2018EDL8069
- Type of Manuscript
- LETTER
- Category
- Image Processing and Video Processing
Authors
Yong-Uk YOON
Korea Aerospace University
Yong-Jo AHN
Digital Insights Inc.
Donggyu SIM
Digital Insights Inc.
Jae-Gon KIM
Korea Aerospace University
Keyword
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Yong-Uk YOON, Yong-Jo AHN, Donggyu SIM, Jae-Gon KIM, "Efficient Methods of Inactive Regions Padding for Segmented Sphere Projection (SSP) of 360 Video" in IEICE TRANSACTIONS on Information,
vol. E101-D, no. 11, pp. 2836-2839, November 2018, doi: 10.1587/transinf.2018EDL8069.
Abstract: In this letter, methods of inactive regions padding for Segmented Sphere Projection (SSP) of 360 videos are proposed. A 360 video is projected onto a 2D plane to be coded with diverse projection formats. Some projection formats have inactive regions in the converted 2D plane such as SSP. The inactive regions may cause visual artifacts as well as coding efficiency decrease due to discontinuous boundaries between active and inactive regions. In this letter, to improve coding efficiency and reduce visual artifacts, the inactive regions are padded by using two types of adjacent pixels in either rectangular-face or circle-face boundaries. By padding the inactive regions with the highly correlated adjacent pixels, the discontinuities between active and inactive regions are reduced. The experimental results show that, in terms of end-to-end Weighted to Spherically uniform PSNR (WS-PSNR), the proposed methods achieve 0.3% BD-rate reduction over the existing padding method for SSP. In addition, the visual artifacts along the borders between discontinuous faces are noticeably reduced.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2018EDL8069/_p
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@ARTICLE{e101-d_11_2836,
author={Yong-Uk YOON, Yong-Jo AHN, Donggyu SIM, Jae-Gon KIM, },
journal={IEICE TRANSACTIONS on Information},
title={Efficient Methods of Inactive Regions Padding for Segmented Sphere Projection (SSP) of 360 Video},
year={2018},
volume={E101-D},
number={11},
pages={2836-2839},
abstract={In this letter, methods of inactive regions padding for Segmented Sphere Projection (SSP) of 360 videos are proposed. A 360 video is projected onto a 2D plane to be coded with diverse projection formats. Some projection formats have inactive regions in the converted 2D plane such as SSP. The inactive regions may cause visual artifacts as well as coding efficiency decrease due to discontinuous boundaries between active and inactive regions. In this letter, to improve coding efficiency and reduce visual artifacts, the inactive regions are padded by using two types of adjacent pixels in either rectangular-face or circle-face boundaries. By padding the inactive regions with the highly correlated adjacent pixels, the discontinuities between active and inactive regions are reduced. The experimental results show that, in terms of end-to-end Weighted to Spherically uniform PSNR (WS-PSNR), the proposed methods achieve 0.3% BD-rate reduction over the existing padding method for SSP. In addition, the visual artifacts along the borders between discontinuous faces are noticeably reduced.},
keywords={},
doi={10.1587/transinf.2018EDL8069},
ISSN={1745-1361},
month={November},}
Copy
TY - JOUR
TI - Efficient Methods of Inactive Regions Padding for Segmented Sphere Projection (SSP) of 360 Video
T2 - IEICE TRANSACTIONS on Information
SP - 2836
EP - 2839
AU - Yong-Uk YOON
AU - Yong-Jo AHN
AU - Donggyu SIM
AU - Jae-Gon KIM
PY - 2018
DO - 10.1587/transinf.2018EDL8069
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E101-D
IS - 11
JA - IEICE TRANSACTIONS on Information
Y1 - November 2018
AB - In this letter, methods of inactive regions padding for Segmented Sphere Projection (SSP) of 360 videos are proposed. A 360 video is projected onto a 2D plane to be coded with diverse projection formats. Some projection formats have inactive regions in the converted 2D plane such as SSP. The inactive regions may cause visual artifacts as well as coding efficiency decrease due to discontinuous boundaries between active and inactive regions. In this letter, to improve coding efficiency and reduce visual artifacts, the inactive regions are padded by using two types of adjacent pixels in either rectangular-face or circle-face boundaries. By padding the inactive regions with the highly correlated adjacent pixels, the discontinuities between active and inactive regions are reduced. The experimental results show that, in terms of end-to-end Weighted to Spherically uniform PSNR (WS-PSNR), the proposed methods achieve 0.3% BD-rate reduction over the existing padding method for SSP. In addition, the visual artifacts along the borders between discontinuous faces are noticeably reduced.
ER -
English
