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    Display Management for High Dynamic Range Video
    24.
    发明申请
    Display Management for High Dynamic Range Video 有权
    高动态范围视频显示管理

    公开(公告)号：US20160005153A1

    公开(公告)日：2016-01-07

    申请号：US14755755

    申请日：2015-06-30

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Robin Atkins ,  Samir N. Hulyalkar

    IPC: G06T5/00 ,  G09G5/10 ,  G06K9/52 ,  G09G5/02 ,  H04N5/235

    CPC classification number: G06T5/007 ,  G06K9/52 ,  G06T2207/20208 ,  G09G5/02 ,  G09G5/10 ,  G09G2320/0271 ,  G09G2340/06 ,  G09G2370/04 ,  H04N1/60 ,  H04N1/6027 ,  H04N9/67 ,  H04N9/68

    Abstract: A display management processor receives an input image with enhanced dynamic range to be displayed on a target display which has a different dynamic range than a reference display. The input image is first transformed into a perceptually-quantized (PQ) color space. A non-linear mapping function generates a tone-mapped intensity image in response to the characteristics of the source and target display and a measure of the intensity of the PQ image. After a detail-preservation step which may generate a filtered tone-mapped intensity image, an image-adaptive intensity and saturation adjustment step generates an intensity adjustment factor and a saturation adjustment factor as functions of the measure of intensity and saturation of the PQ image, which together with the filtered tone-mapped intensity image are used to generate the output image. Examples of the functions to compute the intensity and saturation adjustment factors are provided.

    Abstract translation: 显示管理处理器接收具有增强的动态范围的输入图像，以显示在具有与参考显示不同的动态范围的目标显示器上。 输入图像首先被转换成感知量化（PQ）颜色空间。 非线性映射函数响应于源和目标显示的特性以及PQ图像的强度的度量而产生色调映射强度图像。 在可以生成滤波色调映射强度图像的细节保存步骤之后，图像自适应强度和饱和度调整步骤产生作为PQ图像的强度和饱和度的度量的函数的强度调整因子和饱和度调整因子， 其与滤波的色调映射强度图像一起用于生成输出图像。 提供了计算强度和饱和度调整因子的函数的例子。

    Graphics blending for high dynamic range video
    25.
    发明授权
    Graphics blending for high dynamic range video 有权
    图形混合高动态范围视频

    公开(公告)号：US09230338B2

    公开(公告)日：2016-01-05

    申请号：US14631950

    申请日：2015-02-26

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Timo Kunkel ,  Robin Atkins ,  Tao Chen ,  Samir N. Hulyalkar ,  Jaclyn Anne Pytlarz

    IPC: H04N9/76 ,  G06T7/40 ,  G06T5/00 ,  G06T11/60 ,  H04N5/445 ,  H04N21/426

    CPC classification number: G06T7/408 ,  G06T5/00 ,  G06T11/60 ,  H04N5/44504 ,  H04N21/42653

    Abstract: A method for merging graphics and high dynamic range video data is disclosed. In a video receiver, a display management process uses metadata to map input video data from a first dynamic range into the dynamic range of available graphics data. The remapped video signal is blended with the graphics data to generate a video composite signal. An inverse display management process uses the metadata to map the video composite signal to an output video signal with the first dynamic range. To alleviate perceptual tone-mapping jumps during video scene changes, a metadata transformer transforms the metadata to transformed so that on a television (TV) receiver metadata values transition smoothly between consecutive scenes. The TV receiver receives the output video signal and the transformed metadata to generate video data mapped to the dynamic range of the TV's display.

    Abstract translation: 公开了一种用于合并图形和高动态范围视频数据的方法。 在视频接收机中，显示管理过程使用元数据将来自第一动态范围的输入视频数据映射到可用图形数据的动态范围。 重新映射的视频信号与图形数据混合以产生视频复合信号。 反向显示管理过程使用元数据将视频合成信号映射到具有第一动态范围的输出视频信号。 为了减轻视频场景变化期间的感知色调映射跳跃，元数据变换器将元数据转换为转换，使得在电视（TV）接收机上的元数据值在连续场景之间平滑地转换。 TV接收机接收输出视频信号和变换后的元数据，生成映射到TV显示器的动态范围的视频数据。

    Graphics Blending for High Dynamic Range Video
    26.
    发明申请
    Graphics Blending for High Dynamic Range Video 有权
    图形混合高动态范围视频

    公开(公告)号：US20150256860A1

    公开(公告)日：2015-09-10

    申请号：US14631950

    申请日：2015-02-26

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Timo Kunkel ,  Robin Atkins ,  Tao Chen ,  Samir N. Hulyalkar ,  Jaclyn Anne Pytlarz

    IPC: H04N21/2365 ,  G06T11/60 ,  G06T7/40 ,  G06T5/00

    CPC classification number: G06T7/408 ,  G06T5/00 ,  G06T11/60 ,  H04N5/44504 ,  H04N21/42653

    Abstract: A method for merging graphics and high dynamic range video data is disclosed. In a video receiver, a display management process uses metadata to map input video data from a first dynamic range into the dynamic range of available graphics data. The remapped video signal is blended with the graphics data to generate a video composite signal. An inverse display management process uses the metadata to map the video composite signal to an output video signal with the first dynamic range. To alleviate perceptual tone-mapping jumps during video scene changes, a metadata transformer transforms the metadata to transformed so that on a television (TV) receiver metadata values transition smoothly between consecutive scenes. The TV receiver receives the output video signal and the transformed metadata to generate video data mapped to the dynamic range of the TV's display.

    Abstract translation: 公开了一种用于合并图形和高动态范围视频数据的方法。 在视频接收机中，显示管理过程使用元数据将来自第一动态范围的输入视频数据映射到可用图形数据的动态范围。 重新映射的视频信号与图形数据混合以产生视频复合信号。 反向显示管理过程使用元数据将视频合成信号映射到具有第一动态范围的输出视频信号。 为了减轻视频场景变化期间的感知色调映射跳跃，元数据变换器将元数据转换为转换，使得在电视（TV）接收机上元数据值在连续场景之间平滑地转换。 TV接收机接收输出视频信号和变换后的元数据，生成映射到TV显示器的动态范围的视频数据。

    Content Creation Using Interpolation Between Content Versions
    27.
    发明申请
    Content Creation Using Interpolation Between Content Versions 有权
    内容创建使用内容版本之间插值

    公开(公告)号：US20130315505A1

    公开(公告)日：2013-11-28

    申请号：US13899942

    申请日：2013-05-22

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Robin Atkins ,  Tao Chen ,  Scott Daly ,  Walter C. Gish ,  Samir N. Hulyalkar ,  Michael Rockwell

    IPC: G06T3/40

    CPC classification number: G06T3/4007 ,  G09G5/006 ,  G09G5/026 ,  G09G5/06 ,  G09G2320/0271 ,  G09G2320/0285 ,  G09G2320/06 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2340/0428 ,  G09G2370/10

    Abstract: One or more derived versions of image content may be obtained by interpolating two or more source versions of the same image content. A derived version may be targeted for a class of displays that differs from classes of displays targeted by the source versions. Source images in a source version may have been color graded in a creative process by a content creator/colorist. Interpolation of the source versions may be performed with interpolation parameters having two or more different values in two or more different clusters in at least one of the source images. A normalized version may be used to allow efficient distribution of multiple versions of the same content to a variety of downstream media processing devices, and to preserve or restore image details otherwise lost in one or more of the source versions.

    Abstract translation: 可以通过内插相同图像内容的两个或更多个源版本来获得图像内容的一个或多个派生版本。 派生版本可能针对与源版本所针对的显示类不同的一类显示器。 来源版本中的源图像可能已经由内容创建者/着色者在创意过程中进行了颜色分级。 源版本的插值可以在至少一个源图像中的两个或多个不同簇中具有两个或更多个不同值的插值参数来执行。 可以使用归一化版本来允许将相同内容的多个版本有效地分发到各种下游媒体处理设备，并且保留或恢复在一个或多个源版本中丢失的图像细节。

    Distribution of multi-format high dynamic range video using layered coding
    28.
    发明授权
    Distribution of multi-format high dynamic range video using layered coding 有权

    公开(公告)号：US11146803B2

    公开(公告)日：2021-10-12

    申请号：US14772051

    申请日：2014-02-14

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Guan-Ming Su ,  Samir N. Hulyalkar ,  Tao Chen

    IPC: H04N19/33 ,  H04N19/124 ,  H04N19/157 ,  H04N19/44 ,  H04N19/593 ,  H04N19/70 ,  G06T3/40

    Abstract: An encoder receives an input enhanced dynamic range (EDR) image to be stored or transmitted using multiple coding formats in a layered representation. A layer decomposer generates a lower dynamic range (LDR) image from the EDR image. One or more base layer (BL) encoders encode the LDR image to generate a main coded BL stream and one or more secondary coded BL streams, where each secondary BL stream is coded in a different coding format than the main coded BL stream. A single enhancement layer (EL) coded stream and related metadata are generated using the main coded BL stream, the LDR image, and the input EDR image. An output coded stream includes the coded EL stream, the metadata, and either the main coded BL stream or one of the secondary coded BL streams. Computation-scalable decoding and display management processes for EDR images are also described.

    Backward-compatible HDR codecs with temporal scalability
    30.
    发明授权
    Backward-compatible HDR codecs with temporal scalability 有权

    公开(公告)号：US10440401B2

    公开(公告)日：2019-10-08

    申请号：US15481015

    申请日：2017-04-06

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Guan-Ming Su ,  Qian Chen ,  Tao Chen ,  David Brooks ,  Samir N. Hulyalkar ,  Peng Yin

    IPC: H04N7/18 ,  H04N11/02 ,  H04N11/04 ,  H04N19/98 ,  H04N19/50 ,  H04N19/31 ,  H04N19/70 ,  H04N19/33

    Abstract: A processor for video coding receives a full-frame rate (FFR) HDR video signal and a corresponding FFR SDR video signal. An encoder generates a scalable bitstream that allows decoders to generate half-frame-rate (HFR) SDR, FFR SDR, HFR HDR, or FFR HDR signals. Given odd and even frames of the input FFR SDR signal, the scalable bitstream combines a base layer of coded even SDR frames with an enhancement layer of coded packed frames, where each packed frame includes a downscaled odd SDR frame, a downscaled even HDR residual frame, and a downscaled odd HDR residual frame. In an alternative implementation, the scalable bitstream combines four signals layers: a base layer of even SDR frames, an enhancement layer of odd SDR frames, a base layer of even HDR residual frames and an enhancement layer of odd HDR residual frames. Corresponding decoder architectures are also presented.

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