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    Content creation using interpolation between content versions
    5.
    发明授权
    Content creation using interpolation between content versions 有权
    内容创建使用内容版本之间的插值

    公开(公告)号：US09042682B2

    公开(公告)日：2015-05-26

    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: G06K9/32 ,  G06T3/40 ,  G09G5/02 ,  G09G5/06 ,  G09G5/00

    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。

    Dual-layer frame-compatible full-resolution stereoscopic 3D video delivery
    6.
    发明授权
    Dual-layer frame-compatible full-resolution stereoscopic 3D video delivery 有权
    双层帧兼容全分辨率立体3D视频传输

    公开(公告)号：US08923403B2

    公开(公告)日：2014-12-30

    申请号：US14345570

    申请日：2012-09-26

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Tao Chen ,  Samir N. Hulyalkar ,  Gopi Lakshminarayanan

    IPC: H04N7/12 ,  H04N19/186 ,  H04N13/00

    CPC classification number: H04N19/186 ,  H04N13/161 ,  H04N13/194 ,  H04N19/597

    Abstract: 3D Images may be encoded into reduced resolution image data in a base layer and enhancement layer (EL) image data in one or more enhancement layers. Different types of data compositions may be used in the EL image data. The different types of data compositions may include unfiltered full resolution image data for one or both of left eye and right eye perspectives, or unfiltered full resolution image data for a color channel, e.g., luminance channel, or unfiltered full resolution image data for selected portions of image frames, or fallback data compositions. Based on deciding factors including bitrate requirements and bandwidth constraints, different types of data compositions may be alternatively used by an upstream device to deliver the best possible 3D image data to a wide variety of downstream devices. The upstream device may inform a downstream device of specific types of data compositions with EL image data descriptors.

    Abstract translation: 3D图像可以编码成一个或多个增强层中的基本层和增强层（EL）图像数据中的降低分辨率图像数据。 可以在EL图像数据中使用不同类型的数据组合。 不同类型的数据组合可以包括用于左眼和右眼视角中的一个或两个的未过滤的全分辨率图像数据，或者用于颜色通道的未过滤的全分辨率图像数据，例如亮度通道或用于所选部分的未过滤的全分辨率图像数据 的图像帧或后备数据组合。 基于包括比特率要求和带宽约束的决定因素，不同类型的数据组合可以由上游设备替代地使用，以将最佳可能的3D图像数据传送到各种各样的下游设备。 上游设备可以向下游设备通知具有EL图像数据描述符的特定类型的数据组合。

    Video coding and delivery with both spatial and dynamic range scalability
    7.
    发明授权
    Video coding and delivery with both spatial and dynamic range scalability 有权

    公开(公告)号：US10575005B2

    公开(公告)日：2020-02-25

    申请号：US15745647

    申请日：2016-07-20

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Guan-Ming Su ,  Sheng Qu ,  Samir N. Hulyalkar ,  David Brooks

    IPC: H04N19/33 ,  H04N19/59

    Abstract: In a method to code and transmit scalable HDR video signals, HDR signals are processed and encoded in the IPT-PQ color space to generate a base layer at reduced spatial resolution and/or dynamic range, and an enhancement layer with a residual signal. A signal reshaping block before the base layer encoder allows for improved coding of HDR signals using a reduced bit depth. A decoder can use a BL decoder and backward reshaping to generate a decoded BL HDR signal at a reduced dynamic range and/or spatial resolution, or it can combine the decoded BL HDR signal and the EL stream to generate a decoded HDR signal at full dynamic range and full resolution.

    Adaptive display management using 3D look-up table interpolation
    8.
    发明授权
    Adaptive display management using 3D look-up table interpolation 有权

    公开(公告)号：US10332481B2

    公开(公告)日：2019-06-25

    申请号：US15341932

    申请日：2016-11-02

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Robin Atkins ,  Samir N. Hulyalkar

    IPC: G09G5/06 ,  G09G5/10 ,  G09G5/04

    Abstract: Methods are disclosed for adaptive display management using look-up table interpolation. Given a target maximum brightness value for a display, a new look-up table (LUT) for color gamut mapping is determined based on interpolating values from two other pre-computed color gamut LUTs; one computed for a first maximum display brightness larger than the target maximum brightness value, and one computed for a second maximum display brightness lower than the target brightness value. An interpolation scale is computed based at least on the target maximum brightness value and the first maximum display brightness. Methods to reduce the computation load for the translation of RGB data from one color representation (say, ST 2084) to another color representation (say, BT 1866) using fast interpolation methods are also presented.

    Backlight control and display mapping for high dynamic range images
    9.
    发明授权
    Backlight control and display mapping for high dynamic range images 有权

    公开(公告)号：US10242627B2

    公开(公告)日：2019-03-26

    申请号：US15571369

    申请日：2016-05-11

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Suzanne Farrell ,  Scott Daly ,  Robin Atkins ,  Timo Kunkel ,  Gregory John Ward ,  Samir N. Hulyalkar ,  Ning Xu

    IPC: G09G3/34 ,  G06K9/00 ,  G09G3/36

    Abstract: Systems and methods are disclosed for dynamically adjusting the backlight of a display during video playback. Given an input video stream and associated minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the frame min, mid, or max luminance values are filtered using a temporal filter to generate a filtered output value for each frame. The instantaneous dynamic range of a target display is determined based on the filtered output value and the minimum and maximum brightness values of the display. A backlight control level is computed based on the instantaneous dynamic range, and the input signal is tone mapped by a display management process to be displayed on the target display at the selected backlight level. The design of a temporal filter based on an exponential moving average filter and scene-change detection is presented.

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