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    SCALABILITY OF MULTI-DIRECTIONAL VIDEO STREAMING
    61.
    发明申请
    SCALABILITY OF MULTI-DIRECTIONAL VIDEO STREAMING 审中-公开

    公开(公告)号：US20200092571A1

    公开(公告)日：2020-03-19

    申请号：US16132219

    申请日：2018-09-14

    Applicant: Apple Inc.

    Inventor： Alexandros Tourapis ,  Dazhong Zhang ,  Hang Yuan ,  Hsi-Jung Wu ,  Jae Hoon Kim ,  Jiefu Zhai ,  Ming Chen ,  Xiaosong Zhou

    IPC: H04N19/29 ,  H04N21/44 ,  G09G5/14 ,  H04N19/103

    Abstract: Aspects of the present disclosure provide techniques for reducing latency and improving image quality of a viewport extracted from multi-directional video communications. According to such techniques, first streams of coded video data are received from a source. The first streams include coded data for each of a plurality of tiles representing a multi-directional video, where each tile corresponding to a predetermined spatial region of the multi-directional video, and at least one tile of the plurality of tiles in the first streams contains a current viewport location at a receiver. The techniques include decoding the first streams and displaying the tile containing the current viewport location. When the viewport location at the receiver changes to include a new tile of the plurality of tiles, retrieving and decoding first streams for the new tile, displaying the decoded content for the changed viewport location, and transmitting the changed viewport location to the source.

    Object Tracking in Multi-View Video
    63.
    发明申请
    Object Tracking in Multi-View Video 审中-公开

    公开(公告)号：US20180349705A1

    公开(公告)日：2018-12-06

    申请号：US15613130

    申请日：2017-06-02

    Applicant: Apple Inc.

    Inventor： Jae Hoon Kim ,  Ming Chen ,  Hang Yuan ,  Jiefu Zhai ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Chung ,  Hsi-Jung Wu

    IPC: G06K9/00 ,  G06T7/292 ,  G06K9/32

    Abstract: Techniques are disclosed for managing display of content from multi-view video data. According to these techniques, an object may be identified from content of the multi-view video. The object's location may be tracked across a sequence of multi-view video. The technique may extract a sub-set of video that is contained within a view window that is shifted in an image space of the multi-view video in correspondence to the tracked object's location. These techniques may be implemented either in an image source device or an image sink device.

    In Loop Chroma Deblocking Filter
    64.
    发明申请
    In Loop Chroma Deblocking Filter 审中-公开

    公开(公告)号：US20180338161A1

    公开(公告)日：2018-11-22

    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

    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.

    VIDEO CODING TECHNIQUES FOR HIGH QUALITY CODING OF LOW MOTION CONTENT
    67.
    发明申请
    VIDEO CODING TECHNIQUES FOR HIGH QUALITY CODING OF LOW MOTION CONTENT 审中-公开
    用于低运动内容高品质编码的视频编码技术

    公开(公告)号：US20160360230A1

    公开(公告)日：2016-12-08

    申请号：US14730975

    申请日：2015-06-04

    Applicant: Apple Inc.

    Inventor： Peikang Song ,  Jae Hoon Kim ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Dazhong Zhang

    IPC: H04N19/53 ,  H04N19/31 ,  H04N19/137 ,  H04N19/85 ,  H04N19/70 ,  H04N19/117

    Abstract: Techniques for coding video data are described that maintain high precision coding for low motion video content. Such techniques include determining whether a source video sequence to be coded has low motion content. When the source video sequence contains low motion content, the video sequence may be coded as a plurality of coded frames using a chain of temporal prediction references among the coded frames. Thus, a single frame in the source video sequence is coded as a plurality of frames. Because the coded frames each represent identical content, the quality of coding should improve across the plurality of frames. Optionally, the disclosed techniques may increase the resolution at which video is coded to improve precision and coding quality.

    Abstract translation: 描述了用于对视频数据进行编码的技术，其维持低运动视频内容的高精度编码。 这样的技术包括确定要编码的源视频序列是否具有低运动内容。 当源视频序列包含低运动内容时，视频序列可以使用编码帧中的时间预测参考链来编码为多个编码帧。 因此，源视频序列中的单个帧被编码为多个帧。 由于编码帧各自表示相同的内容，所以编码的质量应该跨越多个帧而改善。 可选地，所公开的技术可以增加视频被编码的分辨率，以提高精度和编码质量。

    TECHNIQUES TO OVERCOME COMMUNICATION LAG BETWEEN TERMINALS PERFORMING VIDEO MIRRORING AND ANNOTATION OPERATIONS
    68.
    发明申请
    TECHNIQUES TO OVERCOME COMMUNICATION LAG BETWEEN TERMINALS PERFORMING VIDEO MIRRORING AND ANNOTATION OPERATIONS 有权
    实现视频镜像和报警操作的终端之间通过通信标签的技术

    公开(公告)号：US20160353057A1

    公开(公告)日：2016-12-01

    申请号：US14727471

    申请日：2015-06-01

    Applicant: Apple Inc.

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

    IPC: H04N7/14 ,  H04L29/06 ,  G06F17/24 ,  H04N7/15

    CPC classification number: H04N7/147 ,  G06F17/241 ,  H04L65/403 ,  H04L65/601 ,  H04N5/147 ,  H04N7/155 ,  H04N21/242 ,  H04N21/4307

    Abstract: Techniques are disclosed for overcoming communication lag between interactive operations among devices in a streaming session. According to the techniques, a first device streaming video content to a second device and an annotation is entered to a first frame being displayed at the second device, which is communicated back to the first device. Responsive to a communication that identifies the annotation, a first device may identify an element of video content from the first frame to which the annotation applies and determine whether the identified element is present in a second frame of video content currently displayed at the first terminal. If so, the first device may display the annotation with the second frame in a location where the identified element is present. If not, the first device may display the annotation via an alternate technique.

    Abstract translation: 公开了用于克服流传输会话中的设备之间的交互操作之间的通信滞后的技术。 根据该技术，将视频内容流传输到第二设备和注释的第一设备被输入到被显示在第二设备上的第一帧，该第一帧被传送回到第一设备。 响应于识别注释的通信，第一设备可以从应用注释的第一帧识别视频内容的元素，并且确定所识别的元素是否存在于当前在第一终端显示的视频内容的第二帧中。 如果是，则第一设备可以在所存在的元素的位置中显示具有第二帧的注释。 如果不是，则第一设备可以经由替代技术来显示注释。

    COHERENCE GROUPS: REGION DESCRIPTORS FOR LOW BIT RATE ENCODING
    69.
    发明申请
    COHERENCE GROUPS: REGION DESCRIPTORS FOR LOW BIT RATE ENCODING 有权
    协调组：用于低比特率编码的区域描述符

    公开(公告)号：US20140362919A1

    公开(公告)日：2014-12-11

    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: 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。

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