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    INTEGRATED IMAGE RESHAPING AND VIDEO CODING
    3.
    发明公开
    INTEGRATED IMAGE RESHAPING AND VIDEO CODING 审中-公开

    公开(公告)号：US20240305791A1

    公开(公告)日：2024-09-12

    申请号：US18666734

    申请日：2024-05-16

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Taoran LU ,  Fangjun PU ,  Peng YIN ,  Tao CHEN ,  Walter J. HUSAK

    IPC: H04N19/159 ,  H04N19/124 ,  H04N19/182 ,  H04N19/44

    CPC classification number: H04N19/159 ,  H04N19/124 ,  H04N19/182 ,  H04N19/45

    Abstract: Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for integrating reshaping into a next generation video codec for encoding and decoding the images, wherein reshaping allows part of the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. A variety of architectures are discussed, including: an out-of-loop reshaping architecture, an in-loop-for intra pictures only reshaping architecture, an in-loop architecture for prediction residuals, and a hybrid in-loop reshaping architecture. Syntax methods for signaling reshaping parameters, and image-encoding methods optimized with respect to reshaping are also presented.

    IMAGE ENHANCEMENT VIA GLOBAL AND LOCAL RESHAPING
    4.
    发明公开
    IMAGE ENHANCEMENT VIA GLOBAL AND LOCAL RESHAPING 审中-公开

    公开(公告)号：US20240095893A1

    公开(公告)日：2024-03-21

    申请号：US18262611

    申请日：2022-01-26

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Guan-Ming SU ,  Harshad KADU ,  Per Jonas Andreas KLITTMARK ,  Tao CHEN

    IPC: G06T5/00 ,  G06V10/60

    CPC classification number: G06T5/007 ,  G06V10/60 ,  G06T2207/20208

    Abstract: A first reshaping mapping is performed on a first image represented in a first domain to generate a second image represented in a second domain. The first domain is of a first dynamic range different from a second dynamic range of which the second domain is. A second reshaping mapping is performed on the second image represented in the second domain to generate a third image represented in the first domain. The third image is perceptually different from the first image in at least one of: global contrast, global saturation, local contrast, local saturation, etc. A display image is derived from the third image and rendered on a display device.

    Workflow for Content Creation and Guided Display Management of EDR Video
    7.
    发明申请
    Workflow for Content Creation and Guided Display Management of EDR Video 有权
    EDR视频内容创建和引导式显示管理工作流程

    公开(公告)号：US20160248939A1

    公开(公告)日：2016-08-25

    申请号：US14894153

    申请日：2014-11-10

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Kimball D. THURSTON, III ,  James E. CRENSHAW ,  Robin ATKINS ,  Tao CHEN ,  Timo KUNKEL

    IPC: H04N1/60 ,  G06T5/00 ,  G06T5/50

    CPC classification number: H04N1/603 ,  G06T5/007 ,  G06T5/50 ,  H04N9/69 ,  H04N2201/326

    Abstract: Video data with enhanced dynamic range are color graded for a first and a second reference display with different dynamic range characteristics to generate a first color-graded output, a second color graded output, and associated first and second sets of metadata. The first color-graded output and the two sets of metadata are transmitted from an encoder to a decoder to be displayed on a target display which may be different than the second reference display. At the receiver, a decoder interpolates between the first and second set of metadata to generate a third set of metadata which drives the display management process for displaying the received video data onto the target display. The second set of metadata of metadata may be represented as delta metadata values from the first set of metadata values.

    Abstract translation: 具有增强的动态范围的视频数据对于具有不同动态范围特性的第一和第二参考显示器进行颜色分级，以生成第一颜色分级输出，第二颜色分级输出以及相关联的第一和第二组元数据。 第一颜色分级输出和两组元数据从编码器发送到解码器，以显示在可能不同于第二参考显示的目标显示器上。 在接收器处，解码器在第一和第二组元数据之间插值以产生第三组元数据，该第三组元数据驱动用于将接收的视频数据显示在目标显示器上的显示管理过程。 元数据的第二组元数据可以从第一组元数据值表示为增量元数据值。

    HIGH PRECISION UP-SAMPLING IN SCALABLE CODING OF HIGH BIT-DEPTH VIDEO
    8.
    发明申请
    HIGH PRECISION UP-SAMPLING IN SCALABLE CODING OF HIGH BIT-DEPTH VIDEO 审中-公开
    高精度高可靠度高可靠性编码的高精度视频高精度

    公开(公告)号：US20150350661A1

    公开(公告)日：2015-12-03

    申请号：US14649198

    申请日：2013-12-04

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Peng YIN ,  Taoran LU ,  Tao CHEN

    IPC: H04N19/33 ,  H04N19/105 ,  H04N19/59 ,  H04N19/80

    CPC classification number: H04N19/33 ,  H04N19/105 ,  H04N19/59 ,  H04N19/80

    Abstract: The precision of up-sampling operations in a layered coding system is preserved when operating on video data with high bit-depth. In response to bit-depth requirements of the video coding or decoding system, scaling and rounding parameters are determined for a separable up-scaling filter. Input data are first filtered across a first spatial direction using a first rounding parameter to generate first up-sampled data. First intermediate data are generated by scaling the first up-sampled data using a first shift parameter. The intermediate data are then filtered across a second spatial direction using a second rounding parameter to generate second up-sampled data. Second intermediate data are generated by scaling the second up-sampled data using a second shift parameter. Final up-sampled data may be generated by clipping the second intermediate data.

    Abstract translation: 当对具有高位深度的视频数据进行操作时，分层编码系统中的上采样操作的精度将被保留。 响应于视频编码或解码系统的位深度要求，确定可分离的缩放滤波器的缩放和舍入参数。 首先使用第一舍入参数在第一空间方向上过滤输入数据，以生成第一上采样数据。 通过使用第一移位参数对第一上采样数据进行缩放来生成第一中间数据。 然后使用第二舍入参数在第二空间方向上过滤中间数据，以产生第二上采样数据。 通过使用第二移位参数对第二上采样数据进行缩放来生成第二中间数据。 可以通过限制第二中间数据来生成最终上采样数据。

    INTEGRATED IMAGE RESHAPING AND VIDEO CODING
    10.
    发明申请
    INTEGRATED IMAGE RESHAPING AND VIDEO CODING 有权

    公开(公告)号：US20230021624A1

    公开(公告)日：2023-01-26

    申请号：US17940819

    申请日：2022-09-08

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Taoran LU ,  Fangjun PU ,  Peng YIN ,  Tao CHEN ,  Walter J. HUSAK

    IPC: H04N19/159 ,  H04N19/124 ,  H04N19/44 ,  H04N19/182

    Abstract: Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for integrating reshaping into a next generation video codec for encoding and decoding the images, wherein reshaping allows part of the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. A variety of architectures are discussed, including: an out-of-loop reshaping architecture, an in-loop-for intra pictures only reshaping architecture, an in-loop architecture for prediction residuals, and a hybrid in-loop reshaping architecture. Syntax methods for signaling reshaping parameters, and image-encoding methods optimized with respect to reshaping are also presented.

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