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    SPHERE PROJECTED MOTION ESTIMATION/COMPENSATION AND MODE DECISION
    12.
    发明申请
    SPHERE PROJECTED MOTION ESTIMATION/COMPENSATION AND MODE DECISION 有权

    公开(公告)号：US20210321133A1

    公开(公告)日：2021-10-14

    申请号：US17207267

    申请日：2021-03-19

    Applicant: Apple Inc.

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

    IPC: H04N19/597 ,  H04N19/176 ,  H04N19/105 ,  H04N19/547

    Abstract: Techniques are disclosed for coding video data predictively based on predictions made from spherical-domain projections of input pictures to be coded and reference pictures that are prediction candidates. Spherical projection of an input picture and the candidate reference pictures may be generated. Thereafter, a search may be conducted for a match between the spherical-domain representation of a pixel block to be coded and a spherical-domain representation of the reference picture. On a match, an offset may be determined between the spherical-domain representation of the pixel block to a matching portion of the of the reference picture in the spherical-domain representation. The spherical-domain offset may be transformed to a motion vector in a source-domain representation of the input picture, and the pixel block may be coded predictively with reference to a source-domain representation of the matching portion of the reference picture.

    Media Analysis and Processing Framework on a Resource Restricted Device
    16.
    发明申请
    Media Analysis and Processing Framework on a Resource Restricted Device 审中-公开
    资源限制设备上的媒体分析和处理框架

    公开(公告)号：US20160357605A1

    公开(公告)日：2016-12-08

    申请号：US15173047

    申请日：2016-06-03

    Applicant: Apple Inc.

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

    IPC: G06F9/50 ,  H04L29/08 ,  G06F9/48

    CPC classification number: G06F9/5011 ,  G06F9/46 ,  G06F9/4881 ,  H04L67/34 ,  H04N21/41407 ,  H04N21/4433

    Abstract: A system for processing media on a resource restricted device, the system including a memory to store data representing media assets and associated descriptors, and program instructions representing an application and a media processing system, and a processor to execute the program instructions, wherein the program instructions represent the media processing system, in response to a call from an application defining a plurality of services to be performed on an asset, determine a tiered schedule of processing operations to be performed upon the asset based on a processing budget associated therewith, and iteratively execute the processing operations on a tier-by-tier basis, unless interrupted.

    Abstract translation: 一种用于在资源受限设备上处理媒体的系统，所述系统包括用于存储表示媒体资产和相关联描述符的数据的存储器，以及表示应用和媒体处理系统的程序指令以及执行所述程序指令的处理器，其中所述程序 指令代表媒体处理系统，响应于来自定义要在资产上执行的多个服务的应用的呼叫，基于与其相关联的处理预算来确定要在资产上执行的处理操作的分层调度，并且迭代地 除非中断，否则逐级执行处理操作。

    DE-JUDDERING TECHNIQUES FOR CODED VIDEO
    17.
    发明申请
    DE-JUDDERING TECHNIQUES FOR CODED VIDEO 审中-公开
    编码视频的裁判技术

    公开(公告)号：US20160182911A1

    公开(公告)日：2016-06-23

    申请号：US14964965

    申请日：2015-12-10

    Applicant: Apple Inc.

    Inventor： Yeping Su ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Xiaosong Zhou ,  Jiefu Zhai

    IPC: H04N19/154 ,  H04N19/137 ,  H04N19/187 ,  H04N19/177 ,  H04N19/70 ,  H04N19/36 ,  H04N19/46 ,  H04N7/01 ,  H04N7/00 ,  H04N19/85 ,  H04N19/115 ,  H04N19/33

    CPC classification number: H04N19/154 ,  H04N7/0127 ,  H04N19/115 ,  H04N19/117 ,  H04N19/137 ,  H04N19/177 ,  H04N19/187 ,  H04N19/31 ,  H04N19/46 ,  H04N19/587 ,  H04N19/85

    Abstract: Judder artifacts are remedied in video coding system by employing frame rate conversion at an encoder. According to the disclosure, a source video sequence may be coded as base layer coded video at a first frame rate. An encoder may identify a portion of the coded video sequence that likely will exhibit judder effects when decoded. For those portions that likely will exhibit judder effects, video data representing the portion of the source video may be coded at a higher frame rate than a frame rate of the coded base layer data as enhancement layer data. Moreover, an encoder may generate metadata representing “FRC hints”—techniques that a decoder should employ when performing decoder-side frame rate conversion. An encoding terminal may transmit the base layer coded video and either the enhancement layer coded video or the FRC hints to a decoder. Thus, encoder infrastructure may mitigate against judder artifacts that may arise during decoding.

    Abstract translation: 通过在编码器处采用帧速率转换，在视频编码系统中纠正了歪曲伪像。 根据本公开，源视频序列可以以第一帧速率被编码为基本层编码的视频。 编码器可以识别编码视频序列的一部分，其在解码时可能会呈现抖动效应。 对于可能出现抖动效应的那些部分，可以以比作为增强层数据的编码的基本层数据的帧速率更高的帧速率对表示源视频的部分的视频数据进行编码。 此外，编码器可以产生表示“FRC提示”的元数据，技术在解码器侧帧速率转换时解码器应采用的技术。 编码终端可以将基础层编码视频和增强层编码视频或FRC提示发送到解码器。 因此，编码器基础设施可以减轻在解码期间可能出现的抖动伪影。

    ADAPTIVE POST-PROCESSING FOR MOBILE VIDEO CALLING SYSTEM
    18.
    发明申请
    ADAPTIVE POST-PROCESSING FOR MOBILE VIDEO CALLING SYSTEM 审中-公开
    自适应后处理移动视频呼叫系统

    公开(公告)号：US20160173817A1

    公开(公告)日：2016-06-16

    申请号：US15043448

    申请日：2016-02-12

    Applicant: Apple Inc.

    Inventor： Jiefu Zhai ,  Chris Y. Chung ,  Xiaosong Zhou ,  Hsi-Jung Wu

    IPC: H04N7/14 ,  H04N19/117

    CPC classification number: H04N7/141 ,  H04N19/117

    Abstract: A system may include a receiver, a decoder, a post-processor, and a controller. The receiver may receive encoded video data. The decoder may decode the encoded video data. The post-processor may perform post-processing on frames of decoded video sequence from the decoder. The controller may adjust post-processing of a current frame, based upon at least one condition parameters detected at the system.

    Abstract translation: 系统可以包括接收器，解码器，后处理器和控制器。 接收机可以接收编码的视频数据。 解码器可以解码编码的视频数据。 后处理器可以对来自解码器的解码视频序列的帧执行后处理。 控制器可以基于在系统处检测到的至少一个条件参数来调整当前帧的后处理。

    TECHNIQUES IN BACKWARDS COMPATIBLE MULTI-LAYER COMPRESSION OF HDR VIDEO
    19.
    发明申请
    TECHNIQUES IN BACKWARDS COMPATIBLE MULTI-LAYER COMPRESSION OF HDR VIDEO 有权
    背景技术兼容HDR视频的多层压缩

    公开(公告)号：US20160127738A1

    公开(公告)日：2016-05-05

    申请号：US14704707

    申请日：2015-05-05

    Applicant: Apple Inc.

    Inventor： Yeping Su ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Jiefu Zhai ,  Ke Zhang ,  Xiaosong Zhou

    IPC: H04N19/503 ,  H04N19/172 ,  H04N19/124

    CPC classification number: H04N19/503 ,  H04N19/124 ,  H04N19/147 ,  H04N19/172 ,  H04N19/30

    Abstract: A scalable coding system codes video as a base layer representation and an enhancement layer representation. A base layer coder may code an LDR representation of a source video. A predictor may predict an HDR representation of the source video from the coded base layer data. A comparator may generate prediction residuals which represent a difference between an HDR representation of the source video and the predicted HDR representation of the source video. A quantizer may quantize the residuals down to an LDR representation. An enhancement layer coder may code the LDR residuals. In other embodiments, the enhancement layer coder may code LDR-converted HDR video directly.

    Abstract translation: 可扩展编码系统将视频编码为基本层表示和增强层表示。 基本层编码器可以对源视频的LDR表示进行编码。 预测器可以从编码的基础层数据预测源视频的HDR表示。 比较器可以产生表示源视频的HDR表示与源视频的预测HDR表示之间的差异的预测残差。 量化器可以将残差量化到LDR表示。 增强层编码器可以对LDR残差进行编码。 在其他实施例中，增强层编码器可以直接编码LDR转换的HDR视频。

    TECHNIQUES FOR HDR/WCR VIDEO CODING
    20.
    发明申请
    TECHNIQUES FOR HDR/WCR VIDEO CODING 审中-公开
    HDR / WCR视频编码技术

    公开(公告)号：US20150326896A1

    公开(公告)日：2015-11-12

    申请号：US14710520

    申请日：2015-05-12

    Applicant: Apple Inc.

    Inventor： Yeping Su ,  Jiefu Zhai ,  Ke Zhang ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  Chris Y. Chung

    IPC: H04N21/2343 ,  H04N21/2385 ,  H04N21/438 ,  H04N19/184 ,  H04N21/4402 ,  H04N19/50 ,  H04N19/186 ,  H04N21/234 ,  H04N21/44

    CPC classification number: H04N19/30 ,  H04N19/46

    Abstract: Systems and methods are provided for processing high quality video data, such as data having a higher than standard bit depth, a high dynamic range, or a wide or custom color gamut, to be compatible with conventional encoders and decoders without significant loss of quality. High quality data is encoded into a plurality of layers with a base layer having the standard quality data and one or more higher quality layers. Decoding systems and methods may map the base layer to the dynamic range or color gamut of the enhancement layer, combine the layers, and map the combined layers to a dynamic range or color gamut appropriate for the target display. Each of the standard quality and the high quality data may be encoded as a plurality of tiers of increasing quality and reference lower level tiers as sources of prediction during predictive coding.

    Abstract translation: 提供了用于处理高质量视频数据的系统和方法，例如具有高于标准位深度，高动态范围或宽或定制色域的数据，以与常规编码器和解码器兼容，而没有显着的质量损失。 高质量数据被编码成具有基层的多层，具有标准质量数据和一个或多个更高质量的层。 解码系统和方法可以将基本层映射到增强层的动态范围或色域，组合层，并将组合层映射到适合于目标显示的动态范围或色域。 标准质量和高质量数据中的每一个可以被编码为增加质量的多个层级和作为预测编码期间的预测源的较低级别的参考。

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