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    ADAPTIVE SYNTAX GROUPING AND COMPRESSION IN VIDEO DATA
    21.
    发明申请
    ADAPTIVE SYNTAX GROUPING AND COMPRESSION IN VIDEO DATA 审中-公开

    公开(公告)号：US20200304837A1

    公开(公告)日：2020-09-24

    申请号：US16895815

    申请日：2020-06-08

    Applicant: Apple Inc.

    Inventor： Yunfei Zheng ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu

    IPC: H04N19/70

    Abstract: An encoding system may include a video source that captures video image, a video coder, and a controller to manage operation of the system. The video coder may encode the video image into encoded video data using a plurality of subgroup parameters corresponding to a plurality of subgroups of pixels within a group. The controller may set the subgroup parameters for at least one of the subgroups of pixels in the video coder, based upon at least one parameters corresponding to the group. A decoding system may decode the video data based upon the motion prediction parameters.

    Hierarchical segmentation and quality measurement for video editing
    23.
    发明授权
    Hierarchical segmentation and quality measurement for video editing 有权

    公开(公告)号：US10062412B2

    公开(公告)日：2018-08-28

    申请号：US15173465

    申请日：2016-06-03

    Applicant: Apple Inc.

    Inventor： Shujie Liu ,  Yunfei Zheng ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  Ke Zhang ,  Albert E. Keinath ,  Chris Y. Chung

    IPC: G11B27/031 ,  G06K9/00

    CPC classification number: G11B27/031 ,  G06K9/00718 ,  G06K9/00751 ,  G06K9/00765 ,  G11B27/28

    Abstract: Methods for organizing media data by automatically segmenting media data into hierarchical layers of scenes are described. The media data may include metadata and content having still image, video or audio data. The metadata may be content-based (e.g., differences between neighboring frames, exposure data, key frame identification data, motion data, or face detection data) or non-content-based (e.g., exposure, focus, location, time) and used to prioritize and/or classify portions of video. The metadata may be generated at the time of image capture or during post-processing. Prioritization information, such as a score for various portions of the image data may be based on the metadata and/or image data. Classification information such as the type or quality of a scene may be determined based on the metadata and/or image data. The classification and prioritization information may be metadata and may be used to organize the media data.

    IN LOOP CHROMA DEBLOCKING FILTER
    24.
    发明申请
    IN LOOP CHROMA DEBLOCKING FILTER 审中-公开
    循环色谱去除过滤器

    公开(公告)号：US20150350687A1

    公开(公告)日：2015-12-03

    申请号：US14290873

    申请日：2014-05-29

    Applicant: Apple Inc.

    Inventor： Jiefu Zhai ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Peikang Song ,  David R. Conrad ,  Jae Hoon Kim ,  Yunfei Zheng

    IPC: H04N19/86 ,  H04N19/80 ,  H04N19/44

    CPC classification number: H04N19/82 ,  H04N19/186

    Abstract: Chroma deblock filtering of reconstructed video samples may be performed to remove blockiness artifacts and reduce color artifacts without over-smoothing. In a first method, chroma deblocking may be performed for boundary samples of a smallest transform size, regardless of partitions and coding modes. In a second method, chroma deblocking may be performed when a boundary strength is greater than 0. In a third method, chroma deblocking may be performed regardless of boundary strengths. In a fourth method, the type of chroma deblocking to be performed may be signaled in a slice header by a flag. Furthermore, luma deblock filtering techniques may be applied to chroma deblock filtering.

    Abstract translation: 可以执行重构的视频样本的色度去块滤波以去除块状伪影并且减少颜色伪影而不会过度平滑。 在第一种方法中，可以对最小变换大小的边界样本执行色度解块，而与分区和编码模式无关。 在第二种方法中，当边界强度大于0时，可以执行色度去块。在第三种方法中，可以执行色度去块，而不管边界强度如何。 在第四种方法中，要执行的色度去块的类型可以通过标志在片头中发出信号。 此外，亮度去块滤波技术可以应用于色度去块滤波。

    Coherence groups: region descriptors for low bit rate encoding
    25.
    发明授权
    Coherence groups: region descriptors for low bit rate encoding 有权
    相干组：用于低比特率编码的区域描述符

    公开(公告)号：US08923640B1

    公开(公告)日：2014-12-30

    申请号：US13913169

    申请日：2013-06-07

    Applicant: Apple Inc.

    Inventor： Xiaosong Zhou ,  Hsi-Jung Wu ,  Chris Y. Chung ,  Albert E. Keinath ,  David R. Conrad ,  Yunfei Zheng ,  Dazhong Zhang ,  Jae Hoon Kim

    IPC: G06K9/62 ,  H04N19/583

    CPC classification number: H04N19/51 ,  H04N19/119 ,  H04N19/136 ,  H04N19/14 ,  H04N19/159 ,  H04N19/172 ,  H04N19/23 ,  H04N19/46

    Abstract: The invention is directed to an efficient way for encoding and decoding video. Embodiments include identifying different coding units that share a similar characteristic. The characteristic can be, for example: quantization values, modes, block sizes, color space, motion vectors, depth, facial and non-facial regions, and filter values. An encoder may then group the units together as a coherence group. An encoder may similarly create a table or other data structure of the coding units. An encoder may then extract the commonly repeating characteristic or attribute from the coding units. The encoder may transmit the coherence groups along with the data structure, and other coding units which were not part of a coherence group. The decoder may receive the data, and utilize the shared characteristic by storing locally in cache, for faster repeated decoding, and decode the coherence group together.

    Abstract translation: 本发明涉及用于对视频进行编码和解码的有效方式。 实施例包括识别共享相似特征的不同编码单元。 特征可以是例如：量化值，模式，块大小，颜色空间，运动矢量，深度，面部和非面部区域以及滤波器值。 然后，编码器可以将这些单元组合在一起作为一致性组。 编码器可以类似地创建编码单元的表或其他数据结构。 然后，编码器可以从编码单元中提取常见的重复特性或属性。 编码器可以连同数据结构以及不是相干组的一部分的其他编码单元一起发送相干组。 解码器可以接收数据，并通过将本地存储在高速缓存中来利用共享特性，以便更快的重复解码，并将相干组一起解码。

    IN LOOP CHROMA DEBLOCKING FILTER
    29.
    发明申请
    IN LOOP CHROMA DEBLOCKING FILTER 审中-公开

    公开(公告)号：US20200296426A1

    公开(公告)日：2020-09-17

    申请号：US16890245

    申请日：2020-06-02

    Applicant: Apple Inc.

    Inventor： Jiefu Zhai ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Peikang Song ,  David R. Conrad ,  Jae Hoon Kim ,  Yunfei Zheng

    IPC: H04N19/82 ,  H04N19/186

    Abstract: Chroma deblock filtering of reconstructed video samples may be performed to remove blockiness artifacts and reduce color artifacts without over-smoothing. In a first method, chroma deblocking may be performed for boundary samples of a smallest transform size, regardless of partitions and coding modes. In a second method, chroma deblocking may be performed when a boundary strength is greater than 0. In a third method, chroma deblocking may be performed regardless of boundary strengths. In a fourth method, the type of chroma deblocking to be performed may be signaled in a slice header by a flag. Furthermore, luma deblock filtering techniques may be applied to chroma deblock filtering.

    In loop chroma deblocking filter
    30.
    发明授权
    In loop chroma deblocking filter 有权

    公开(公告)号：US10708623B2

    公开(公告)日：2020-07-07

    申请号：US16050744

    申请日：2018-07-31

    Applicant: Apple Inc.

    Inventor： Jiefu Zhai ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Peikang Song ,  David R. Conrad ,  Jae Hoon Kim ,  Yunfei Zheng

    IPC: H04N19/82 ,  H04N19/186

    Abstract: Chroma deblock filtering of reconstructed video samples may be performed to remove blockiness artifacts and reduce color artifacts without over-smoothing. In a first method, chroma deblocking may be performed for boundary samples of a smallest transform size, regardless of partitions and coding modes. In a second method, chroma deblocking may be performed when a boundary strength is greater than 0. In a third method, chroma deblocking may be performed regardless of boundary strengths. In a fourth method, the type of chroma deblocking to be performed may be signaled in a slice header by a flag. Furthermore, luma deblock filtering techniques may be applied to chroma deblock filtering.

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