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영문 논문지

홈 홈 > 연구문헌 > 영문 논문지 > TIIS (한국인터넷정보학회)

TIIS (한국인터넷정보학회)

Current Result Document : 79 / 80

한글제목(Korean Title) A Multi-category Task for Bitrate Interval Prediction with the Target Perceptual Quality
영문제목(English Title) A Multi-category Task for Bitrate Interval Prediction with the Target Perceptual Quality
저자(Author) Zhenwei Yang   Liquan Shen  
원문수록처(Citation) VOL 15 NO. 12 PP. 4476 ~ 4491 (2021. 12)
한글내용
(Korean Abstract)
영문내용
(English Abstract)
Video service providers tend to face user network problems in the process of transmitting video streams. They strive to provide user with superior video quality in a limited bitrate environment. It is necessary to accurately determine the target bitrate range of the video under different quality requirements. Recently, several schemes have been proposed to meet this requirement. However, they do not take the impact of visual influence into account. In this paper, we propose a new multi-category model to accurately predict the target bitrate range with target visual quality by machine learning. Firstly, a dataset is constructed to generate multi-category models by machine learning. The quality score ladders and the corresponding bitrate-interval categories are defined in the dataset. Secondly, several types of spatial-temporal features related to VMAF evaluation metrics and visual factors are extracted and processed statistically for classification. Finally, bitrate prediction models trained on the dataset by RandomForest classifier can be used to accurately predict the target bitrate of the input videos with target video quality. The classification prediction accuracy of the model reaches 0.705 and the encoded video which is compressed by the bitrate predicted by the model can achieve the target perceptual quality.
키워드(Keyword) Perceptual coding   Bitrate prediction   Rate control   Machine Learning   Feature Extraction  
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