Techniques for evaluating compressed motion video quality
    14.
    发明授权
    Techniques for evaluating compressed motion video quality 有权
    评估压缩运动视频质量的技术

    公开(公告)号:US09204150B2

    公开(公告)日:2015-12-01

    申请号:US14190215

    申请日:2014-02-26

    Abstract: Various embodiments are generally directed to techniques for evaluating the resulting image quality of compression of motion videos as an input to controlling the degree of compression. A device to compress motion video includes a compressor to compress a first uncompressed frame of a motion video to generate a first compressed frame of the motion video for a viewing device having at least one viewing characteristic, and a mean opinion score (MOS) estimator to combine a structural metric of image quality of the first compressed frame and an opinion metric of image quality associated with the at least one viewing characteristic to determine whether to alter a quantization parameter (QP) of the compressor to compress a second uncompressed frame of the motion video. Other embodiments are described and claimed.

    Abstract translation: 各种实施例通常涉及用于评估所得到的运动视频的压缩图像质量作为用于控制压缩程度的输入的技术。 用于压缩运动视频的设备包括压缩器,以压缩运动视频的第一未压缩帧,以生成具有至少一个观看特征的观看设备的运动视频的第一压缩帧,以及平均意见得分(MOS)估计器 组合第一压缩帧的图像质量的结构度量和与至少一个观看特征相关联的图像质量的意见度量,以确定是否改变压缩器的量化参数(QP)以压缩运动的第二未压缩帧 视频。 描述和要求保护其他实施例。

    HYBRID PIXEL-DOMAIN AND COMPRESSED-DOMAIN VIDEO ANALYTICS FRAMEWORK

    公开(公告)号:US20220191537A1

    公开(公告)日:2022-06-16

    申请号:US17509246

    申请日:2021-10-25

    Abstract: In one embodiment, an apparatus comprises processing circuitry to: receive, via a communication interface, a compressed video stream captured by a camera, wherein the compressed video stream comprises: a first compressed frame; and a second compressed frame, wherein the second compressed frame is compressed based at least in part on the first compressed frame, and wherein the second compressed frame comprises a plurality of motion vectors; decompress the first compressed frame into a first decompressed frame; perform pixel-domain object detection to detect an object at a first position in the first decompressed frame; and perform compressed-domain object detection to detect the object at a second position in the second compressed frame, wherein the object is detected at the second position in the second compressed frame based on: the first position of the object in the first decompressed frame; and the plurality of motion vectors from the second compressed frame.

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