PREVENTING I-FRAME POPPING IN VIDEO ENCODING AND DECODING
    11.
    发明申请
    PREVENTING I-FRAME POPPING IN VIDEO ENCODING AND DECODING 审中-公开
    在视频编码和解码中防止I-FRAME POPPING

    公开(公告)号:US20160360219A1

    公开(公告)日:2016-12-08

    申请号:US14732615

    申请日:2015-06-05

    Applicant: Apple Inc.

    Abstract: Methods and systems provide video compression to reduce a “popping” effect caused by differences in quality between a refresh frame (e.g., I-frame or IDR-frame) and neighboring frame(s). In an embodiment, a quality of a pre-definable number of frames preceding a refresh frame (“preceding frames”) may be increased. A quantization parameter may be decreased for a region within at least one of the preceding frame(s). In an embodiment, preceding frames may be coded according to an open group of pictures (“GOP”) structure. In an embodiment, a refresh frame may be first coded as a P-frame, then coded based on the coded P-frame. In an embodiment, preceding frames may be first coded based on the refresh frame, then coded based on the coded frames without referencing the refresh frame. Each of these methods may increase consistency of quality in a sequence of frames, and, correspondingly, minimize or remove I-frame popping.

    Abstract translation: 方法和系统提供视频压缩以减少由刷新帧(例如,I帧或IDR帧)与相邻帧之间的质量差引起的“弹出”效应。 在一个实施例中,可以增加在刷新帧(“前一帧”)之前的可预定数量的帧的质量。 可以针对前一帧中的至少一个中的区域减小量化参数。 在一个实施例中,可以根据打开的图像组(“GOP”)结构对前面的帧进行编码。 在一个实施例中,可以将刷新帧首先编码为P帧,然后基于编码的P帧进行编码。 在一个实施例中,先前的帧可以基于刷新帧进行首先编码,然后基于编码的帧进行编码,而不参考刷新帧。 这些方法中的每一种可以增加帧序列中的质量的一致性,并且相应地最小化或去除I帧弹出。

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