Rate distortion optimization based on saliency characteristic for HEVC intra coding
Although the perception based rate distortion optimization (RDO) and coding algorithms can improve subjective quality,they significantly decrease rate distortion performance.For the above questions,a saliency-based RDO method was proposed.Firstly,according to the relation between rate distribution a...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2017-10-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017250/ |
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| author | Jinlong LI Fen CHEN Zongju PENG Gangyi JIANG Mei YU |
| author_facet | Jinlong LI Fen CHEN Zongju PENG Gangyi JIANG Mei YU |
| author_sort | Jinlong LI |
| collection | DOAJ |
| description | Although the perception based rate distortion optimization (RDO) and coding algorithms can improve subjective quality,they significantly decrease rate distortion performance.For the above questions,a saliency-based RDO method was proposed.Firstly,according to the relation between rate distribution and saliency features of coding tree unit in HEVC,a priori saliency-rate model was designed.Furthermore,the initial parameters of the model were determined.Secondly,the rate difference minimization rate distortion model was proposed,and then a calculation method of the adaptive Lagrangian multiplier was derived from the model.Finally,update mechanism of model parameters was designed.Experimental results show that the proposed algorithm can improve the subjective quality while it maintains rate distortion performance. |
| format | Article |
| id | doaj-art-6c40e9a427424f02a3b7e102df1345fe |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2017-10-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-6c40e9a427424f02a3b7e102df1345fe2025-01-15T03:06:02ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012017-10-013312413359599698Rate distortion optimization based on saliency characteristic for HEVC intra codingJinlong LIFen CHENZongju PENGGangyi JIANGMei YUAlthough the perception based rate distortion optimization (RDO) and coding algorithms can improve subjective quality,they significantly decrease rate distortion performance.For the above questions,a saliency-based RDO method was proposed.Firstly,according to the relation between rate distribution and saliency features of coding tree unit in HEVC,a priori saliency-rate model was designed.Furthermore,the initial parameters of the model were determined.Secondly,the rate difference minimization rate distortion model was proposed,and then a calculation method of the adaptive Lagrangian multiplier was derived from the model.Finally,update mechanism of model parameters was designed.Experimental results show that the proposed algorithm can improve the subjective quality while it maintains rate distortion performance.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017250/high efficiency video codingrate distortion optimizationLagrangian multipliersaliency characteristic |
| spellingShingle | Jinlong LI Fen CHEN Zongju PENG Gangyi JIANG Mei YU Rate distortion optimization based on saliency characteristic for HEVC intra coding Dianxin kexue high efficiency video coding rate distortion optimization Lagrangian multiplier saliency characteristic |
| title | Rate distortion optimization based on saliency characteristic for HEVC intra coding |
| title_full | Rate distortion optimization based on saliency characteristic for HEVC intra coding |
| title_fullStr | Rate distortion optimization based on saliency characteristic for HEVC intra coding |
| title_full_unstemmed | Rate distortion optimization based on saliency characteristic for HEVC intra coding |
| title_short | Rate distortion optimization based on saliency characteristic for HEVC intra coding |
| title_sort | rate distortion optimization based on saliency characteristic for hevc intra coding |
| topic | high efficiency video coding rate distortion optimization Lagrangian multiplier saliency characteristic |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017250/ |
| work_keys_str_mv | AT jinlongli ratedistortionoptimizationbasedonsaliencycharacteristicforhevcintracoding AT fenchen ratedistortionoptimizationbasedonsaliencycharacteristicforhevcintracoding AT zongjupeng ratedistortionoptimizationbasedonsaliencycharacteristicforhevcintracoding AT gangyijiang ratedistortionoptimizationbasedonsaliencycharacteristicforhevcintracoding AT meiyu ratedistortionoptimizationbasedonsaliencycharacteristicforhevcintracoding |