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    Method and apparatus for derivation of motion vector predictor candidate set
    1.
    发明授权
    Method and apparatus for derivation of motion vector predictor candidate set 有权

    公开(公告)号：US10154279B2

    公开(公告)日：2018-12-11

    申请号：US15832987

    申请日：2017-12-06

    Applicant: HFI Innovation Inc.

    Inventor： Tzu-Der Chuang ,  Jian-Liang Lin ,  Yu-Wen Huang ,  Shaw-Min Lei

    IPC: H04N7/50 ,  H04N19/52 ,  H04N19/70 ,  H04N19/51 ,  H04N19/593 ,  H04N19/50

    Abstract: A method and apparatus for deriving a motion vector predictor (MVP) candidate set for a block are disclosed. Embodiments according to the present invention generate a complete full MVP candidate set based on the redundancy-removed MVP candidate set if one or more redundant MVP candidates exist. In one embodiment, the method generates the complete full MVP candidate set by adding replacement MVP candidates to the redundancy-removed MVP candidate set and a value corresponding to a non-redundant MVP is assigned to each replacement MVP candidate. In another embodiment, the method generates the complete full MVP candidate set by adding replacement MVP candidates to the redundancy-removed MVP candidate set and a value is assigned to each replacement MVP candidate according to a rule. The procedure of assigning value, checking redundancy, removing redundant MVP candidate are repeated until the MVP candidate set is complete and full.

    Simplified non-square quadtree transforms for video coding
    2.
    发明授权
    Simplified non-square quadtree transforms for video coding 有权

    公开(公告)号：US09912944B2

    公开(公告)日：2018-03-06

    申请号：US13863266

    申请日：2013-04-15

    Applicant: QUALCOMM Incorporated

    Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

    IPC: H04N7/50 ,  H04N19/61 ,  H04N19/159 ,  H04N19/119 ,  H04N19/122 ,  H04N19/96

    CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/122 ,  H04N19/159 ,  H04N19/619

    Abstract: In an example, a method of decoding video data includes determining a prediction partitioning structure for predicting pixel values associated with a block of video data. The method also includes determining a transform partitioning structure for applying one or more transforms to the predicted pixel values. Determining the transform split structure includes splitting a parent transform unit, upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more square transforms, determining one or more square transforms such that each of the one or more square transforms correspond to exactly one prediction partition, and upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more non-square transforms, determining whether to split the one or more non-square transforms based at least in part on the one or more non-square transforms being non-square.

    Video decoding apparatus and video encoding apparatus
    3.
    发明授权
    Video decoding apparatus and video encoding apparatus 有权

    公开(公告)号：US09762933B2

    公开(公告)日：2017-09-12

    申请号：US15135042

    申请日：2016-04-21

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： Tomoyuki Yamamoto ,  Tomohiro Ikai

    IPC: H04N7/50 ,  H04N19/91 ,  H04N19/176 ,  H04N19/134 ,  H04N19/122 ,  H04N19/463 ,  H04N19/182 ,  H04N19/513 ,  H04N19/96

    CPC classification number: H04N19/513 ,  H04N19/122 ,  H04N19/134 ,  H04N19/176 ,  H04N19/182 ,  H04N19/463 ,  H04N19/91 ,  H04N19/96

    Abstract: While maintaining a high degree of freedom in choosing partition sizes and transformation sizes adapted for local characteristics of videos, the amount of metadata is decreased. A video encoding apparatus (10) divides an input video into blocks of a prescribed size and encodes the video block by block. The video encoding apparatus is provided with: a prediction parameter determining portion (102) that decides the block partition structure; a predictive image producing portion (103) that generates predictive images, partition by partition, as prescribed by the partition structure; a transform coefficient producing portion (107) which applies one of the frequency transformations included in a prescribed transformation preset to prediction residuals, i.e. the differences between predictive images and the input video; a transform restriction deriving portion (104) which generates the list of transform candidate, i.e. lists of frequency transformations that can be applied to each partition, on the basis of partition format information; and a variable-length-encoding portion (108) which, on the basis of the list of transform candidate and the transformation preset, performs variable-length encoding on transformation selection flags.

    Motion vector prediction in video coding
    6.
    发明授权
    Motion vector prediction in video coding 有权
    视频编码中运动矢量预测

    公开(公告)号：US09538180B2

    公开(公告)日：2017-01-03

    申请号：US14107144

    申请日：2013-12-16

    Applicant: QUALCOMM Incorporated

    Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

    IPC: H04N7/12 ,  H04N7/50 ,  H04N19/51 ,  H04N19/597 ,  H04N19/513 ,  H04N19/573 ,  H04N19/593

    CPC classification number: H04N19/513 ,  H04N19/573 ,  H04N19/593 ,  H04N19/597

    Abstract: During a process to derive an inter-view predicted motion vector candidate (IPMVC) for an Advanced Motion Vector Prediction (AMVP) candidate list, a video coder determines, based on a disparity vector of a current prediction unit (PU), a reference PU for the current PU. Furthermore, when a first reference picture of the reference PU has the same picture order count (POC) value as a target reference picture of the current PU, the video coder determines an IPMVC based on a first motion vector of the reference PU. Otherwise, when a second reference picture of the reference PU has the same POC value as the target reference picture of the current PU, the video coder determines the IPMVC based on a second motion vector of the reference PU.

    Abstract translation: 在导出用于高级运动矢量预测（AMVP）候选列表的视角间预测运动矢量候选（IPMVC）的过程中，视频编码器基于当前预测单元（PU）的视差向量来确定参考PU 用于当前的PU。 此外，当参考PU的第一参考图像具有与当前PU的目标参考图片相同的图像顺序计数（POC）值时，视频编码器基于参考PU的第一运动矢量来确定IPMVC。 否则，当参考PU的第二参考图像具有与当前PU的目标参考图像相同的POC值时，视频编码器基于参考PU的第二运动矢量来确定IPMVC。

    Chroma information signaling for video streams
    7.
    发明授权
    Chroma information signaling for video streams 有权
    视频流的色度信息信号

    公开(公告)号：US09516311B2

    公开(公告)日：2016-12-06

    申请号：US13893954

    申请日：2013-05-14

    Applicant: Cisco Technology, Inc.

    Inventor： Arturo A. Rodriguez

    IPC: H04N7/50 ,  H04N19/46 ,  H04N5/76 ,  H04N9/64 ,  H04N11/04 ,  H04N11/20 ,  H04N19/70 ,  H04N19/172 ,  H04N19/61 ,  H04N19/117 ,  H04N19/186 ,  H04N19/16 ,  H04N19/44 ,  H04N19/80 ,  H04N19/42 ,  H04N19/85 ,  H04N19/59 ,  H04N5/765 ,  H04N5/775 ,  H04N5/781 ,  H04N9/804

    CPC classification number: H04N19/46 ,  H04N5/76 ,  H04N5/765 ,  H04N5/775 ,  H04N5/781 ,  H04N9/64 ,  H04N9/8042 ,  H04N11/044 ,  H04N11/20 ,  H04N19/117 ,  H04N19/16 ,  H04N19/172 ,  H04N19/186 ,  H04N19/42 ,  H04N19/44 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85

    Abstract: Embodiments of systems and methods for signaling chroma information for a picture in a compressed video stream are provided. One system embodiment, among others, comprises a memory with logic, and a processor configured with the logic to provide a compressed video stream that includes a picture having chroma samples and luma samples, and provide in the compressed video stream a flag for signaling information corresponding to the location of the chroma samples in relation to the luma samples in the picture, wherein a first defined flag value indicates default locations of the chroma samples in relation to the luma samples in the picture, wherein a second defined flag value indicates a presence in the compressed video stream of auxiliary chroma information corresponding to relative locations of the chroma samples to the luma samples in the picture, and wherein the number of chroma samples in the picture implied by the first defined flag value is equal to the number of chroma samples in the picture implied by the second defined flag value. Other embodiments for signaling chroma information for a picture in a compressed video stream are included herein.

    Abstract translation: 提供了用于在压缩视频流中为图像信号发送信号的系统和方法的实施例。 一个系统实施例，其中包括具有逻辑的存储器，以及处理器，配置有逻辑以提供包括具有色度样本和亮度采样的图像的压缩视频流，并且在压缩视频流中提供对应于信号的信号的标志 到相关于图片中的亮度样本的色度样本的位置，其中第一定义的标记值指示相关于图片中的亮度样本的色度样本的默认位置，其中第二定义的标志值指示存在于 所述辅助色度信息的压缩视频流对应于所述色度样本相对于所述图像中的所述亮度样本的相对位置，并且其中由所述第一定义标志值隐含的所述图像中的色度采样数目等于所述色度样本的数量 第二个定义的标志值隐含的图片。 本文中包括用于在压缩视频流中为图像发送色度信息的其他实施例。

    Hierarchical sudden illumination change detection using radiance consistency within a spatial neighborhood
    8.
    发明授权
    Hierarchical sudden illumination change detection using radiance consistency within a spatial neighborhood 有权
    在空间邻域中使用辐射一致性的分层突发照明变化检测

    公开(公告)号：US09373055B2

    公开(公告)日：2016-06-21

    申请号：US12336382

    申请日：2008-12-16

    Applicant: Wesley Kenneth Cobb ,  Kishor Adinath Saitwal

    Inventor： Wesley Kenneth Cobb ,  Kishor Adinath Saitwal

    IPC: H04N7/50 ,  G06K9/46

    CPC classification number: G06K9/4661

    Abstract: Techniques are disclosed for detecting sudden illumination changes using radiance consistency within a spatial neighborhood. A background/foreground (BG/FG) component of a behavior recognition system may be configured to generate a background image depicting a scene background. Further, the (BG/FG) component may periodically evaluate a current video frame to determine whether a sudden illumination change has occurred. A sudden illumination change occurs when scene lighting changes dramatically from one frame to the next (or over a small number of frames).

    Abstract translation: 公开了用于使用空间邻域内的辐射一致性来检测突发照明变化的技术。 行为识别系统的背景/前景（BG / FG）组件可以被配置为生成描绘场景背景的背景图像。 此外，（BG / FG）组件可以周期性地评估当前视频帧以确定是否发生了突然的照明改变。 当场景照明从一帧显着变化到下一帧（或少量帧）时，会发生突然的照明变化。

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