Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity
Aiming at the shortcomings of the coding rate distortion model in traditional video coding,considering the characteristics of equal rectangular omnidirectional video,a method of omnidirectional video coding rate distortion optimization based on spherical weighted structural similarity (WS-SSIM) was...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2019-02-01
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| Series: | Dianxin kexue |
| Subjects: | |
| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2019025/ |
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| author | Yufeng ZHOU Mei YU Baozhen DU Yang SONG Gangyi JIANG |
| author_facet | Yufeng ZHOU Mei YU Baozhen DU Yang SONG Gangyi JIANG |
| author_sort | Yufeng ZHOU |
| collection | DOAJ |
| description | Aiming at the shortcomings of the coding rate distortion model in traditional video coding,considering the characteristics of equal rectangular omnidirectional video,a method of omnidirectional video coding rate distortion optimization based on spherical weighted structural similarity (WS-SSIM) was proposed.By considering the distortion of the internal structural similarity of the projection plane and the relationship between the spherical distortion and the projection plane distortion,the “spherical weighted structural similarity” was proposed to describe the degree of distortion of the planar omnidirectional image local block relative to the viewing sphere,which was applied to the rate-distortion optimization process of omnidirectional video coding and adaptive selection of quantization parameters to improve vision-based coding efficiency.The experimental results show that compared with the HEVC video coding standard HM16.9 test platform,the proposed method can save an average of 24.48% code rate under the same visual quality,which indicates that the method has significant performance for improving the omnidirectional video coding rate distortion performance. |
| format | Article |
| id | doaj-art-c6496968fe814e279277edfd877c9eba |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2019-02-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-c6496968fe814e279277edfd877c9eba2025-01-15T03:03:19ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012019-02-0135596959591082Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarityYufeng ZHOUMei YUBaozhen DUYang SONGGangyi JIANGAiming at the shortcomings of the coding rate distortion model in traditional video coding,considering the characteristics of equal rectangular omnidirectional video,a method of omnidirectional video coding rate distortion optimization based on spherical weighted structural similarity (WS-SSIM) was proposed.By considering the distortion of the internal structural similarity of the projection plane and the relationship between the spherical distortion and the projection plane distortion,the “spherical weighted structural similarity” was proposed to describe the degree of distortion of the planar omnidirectional image local block relative to the viewing sphere,which was applied to the rate-distortion optimization process of omnidirectional video coding and adaptive selection of quantization parameters to improve vision-based coding efficiency.The experimental results show that compared with the HEVC video coding standard HM16.9 test platform,the proposed method can save an average of 24.48% code rate under the same visual quality,which indicates that the method has significant performance for improving the omnidirectional video coding rate distortion performance.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2019025/omnidirectional video codingweighted-to-spherically-uniform structural similarityrate distortion optimizationadaptive quantization parameter selection |
| spellingShingle | Yufeng ZHOU Mei YU Baozhen DU Yang SONG Gangyi JIANG Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity Dianxin kexue omnidirectional video coding weighted-to-spherically-uniform structural similarity rate distortion optimization adaptive quantization parameter selection |
| title | Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity |
| title_full | Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity |
| title_fullStr | Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity |
| title_full_unstemmed | Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity |
| title_short | Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity |
| title_sort | omni directional video coding rate distortion optimization method based on weighted to spherically uniform structural similarity |
| topic | omnidirectional video coding weighted-to-spherically-uniform structural similarity rate distortion optimization adaptive quantization parameter selection |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2019025/ |
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