首页> 外国专利> TECHNIQUES FOR MODELING TEMPORAL DISTORTIONS WHEN PREDICTING PERCEPTUAL VIDEO QUALITY

TECHNIQUES FOR MODELING TEMPORAL DISTORTIONS WHEN PREDICTING PERCEPTUAL VIDEO QUALITY

机译:预测感知视频质量时的时间失真建模技术

摘要

In various embodiments, a prediction application computes a quality score for re-constructed visual content that is derived from visual content. The prediction application generates a frame difference matrix based on two frames included in the re-constructed video content. The prediction application then generates a first entropy matrix based on the frame difference matrix and a first scale. Subsequently, the prediction application computes a first value for a first temporal feature based on the first entropy matrix and a second entropy matrix associated with both the visual content and the first scale. The prediction application computes a quality score for the re-constructed video content based on the first value, a second value for a second temporal feature associated with a second scale, and a machine learning model that is trained using subjective quality scores. The quality score indicates a level of visual quality associated with streamed video content.
机译:在各个实施例中,预测应用计算从视觉内容导出的重构的视觉内容的质量得分。预测应用基于重建的视频内容中包括的两个帧生成帧差矩阵。然后,预测应用程序基于帧差矩阵和第一比例尺生成第一熵矩阵。随后,预测应用基于与视觉内容和第一比例尺都相关联的第一熵矩阵和第二熵矩阵来计算第一时间特征的第一值。预测应用程序基于第一值,与第二比例尺关联的第二时间特征的第二值以及使用主观质量得分进行训练的机器学习模型,计算重构视频内容的质量得分。质量得分表示与流式视频内容相关的视觉质量水平。

著录项

  • 公开/公告号WO2019157234A2

    专利类型

  • 公开/公告日2019-08-15

    原文格式PDF

  • 申请/专利权人 NETFLIX INC.;

    申请/专利号WO2019US17133

  • 发明设计人 LI ZHI;BAMPIS CHRISTOS;

    申请日2019-02-07

  • 分类号H04N17/02;H04N17/04;H04N19/154;

  • 国家 WO

  • 入库时间 2022-08-21 11:53:35

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