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    Foviation and HDR
    84.
    发明授权
    Foviation and HDR 有权

    公开(公告)号：US11330309B2

    公开(公告)日：2022-05-10

    申请号：US17260521

    申请日：2019-07-15

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan

    IPC: H04N21/2343 ,  H04N21/442

    Abstract: First foviated images are streamed to a streaming client. The first foviated images with first image metadata sets are used to generate first display mapped images for rendering to a viewer at first time points. View direction data is collected and used to determine a second view direction of the viewer at a second time point. A second foviated image and a second image metadata set are generated from a second HDR source image in reference to the second view direction of the viewer and used to generate a second display mapped image for rendering to the viewer at the second time point. The second image metadata set comprises a display management metadata portions for adapting a focal-vision and peripheral-vision image portions to corresponding image portions in the second display mapped image. The focal-vision display management metadata portion is generated with a predicted light adaptation level of the viewer for the second time point. The second foviated image and the second image metadata set are transmitted to the video streaming client.

    POSITIONAL ZERO LATENCY
    85.
    发明申请
    POSITIONAL ZERO LATENCY 有权

    公开(公告)号：US20210099693A1

    公开(公告)日：2021-04-01

    申请号：US17117145

    申请日：2020-12-10

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan

    IPC: H04N13/383 ,  H04N13/194 ,  H04N13/139 ,  H04N13/161 ,  G01S3/00 ,  H04N21/81 ,  H04N21/2343 ,  H04N13/178

    Abstract: Based on viewing tracking data, a viewer's view direction to a three-dimensional (3D) scene depicted by a first video image is determined. The first video image has been streamed in a video stream to the streaming client device before the first time point and rendered with the streaming client device to the viewer at the first time point. Based on the viewer's view direction, a target view portion is identified in a second video image to be streamed in the video stream to the streaming client device to be rendered at a second time point subsequent to the first time point. The target view portion is encoded into the video stream with a higher target spatiotemporal resolution than that used to encode remaining non-target view portions in the second video image.

    Parameterizing 3D scenes for volumetric viewing
    86.
    发明授权
    Parameterizing 3D scenes for volumetric viewing 有权

    公开(公告)号：US10460509B2

    公开(公告)日：2019-10-29

    申请号：US16179715

    申请日：2018-11-02

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Haricharan Lakshman ,  Ajit Ninan

    IPC: G06T15/08 ,  G06T3/40 ,  G06T3/00 ,  G06T7/593 ,  G09G5/14 ,  H04N19/107

    Abstract: A target view to a 3D scene depicted by a multiview image is determined. The multiview image comprising sampled views at sampled view positions distributed throughout a viewing volume. Each sampled view in the sampled views comprises a wide-field-of-view (WFOV) image and a WFOV depth map as seen from a respective sampled view position in the sampled view positions. The target view is used to select, from the sampled views, a set of sampled views. A display image is caused to be rendered on a display of a wearable device. The display image is generated based on a WFOV image and a WFOV depth map for each sampled view in the set of sampled views.

    Tiled assemblies for a high dynamic range display panel
    88.
    发明授权
    Tiled assemblies for a high dynamic range display panel 有权

    公开(公告)号：US10371884B2

    公开(公告)日：2019-08-06

    申请号：US15501400

    申请日：2015-08-03

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan ,  Robin Atkins

    IPC: G02F1/13357 ,  F21V8/00

    Abstract: Techniques are provided for a high dynamic range panel that includes an array of light sources (202,203) illuminating a corresponding array of light guides (204, 206). A light source (202) of the array illuminates a first light guide (204). The light source directly underlies, such as in a cavity (208), a second light guide (206) that is adjacent to the first light guide. The light source (202) does not extend below a bottom side (214) of either the first light guide or the second light guide to reduce thickness of the panel. The light source (202) and the first light guide (204) can be integrated as a tile assembly. Alternatively, the light source (202) and the second light guide (206) can be an integrated tile assembly. In a specific embodiment, the light source emits a blue or ultraviolet light, which is converted by quantum dots to a different color.

    POSITIONAL ZERO LATENCY
    89.
    发明申请
    POSITIONAL ZERO LATENCY 审中-公开

    公开(公告)号：US20190174125A1

    公开(公告)日：2019-06-06

    申请号：US16209445

    申请日：2018-12-04

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan

    IPC: H04N13/383 ,  H04N13/161 ,  H04N13/139 ,  H04N13/194

    Abstract: Based on viewing tracking data, a viewer's view direction to a three-dimensional (3D) scene depicted by a first video image is determined. The first video image has been streamed in a video stream to the streaming client device before the first time point and rendered with the streaming client device to the viewer at the first time point. Based on the viewer's view direction, a target view portion is identified in a second video image to be streamed in the video stream to the streaming client device to be rendered at a second time point subsequent to the first time point. The target view portion is encoded into the video stream with a higher target spatiotemporal resolution than that used to encode remaining non-target view portions in the second video image.

    Techniques for dual modulation with light conversion
    90.
    发明授权
    Techniques for dual modulation with light conversion 有权

    公开(公告)号：US10295863B2

    公开(公告)日：2019-05-21

    申请号：US16169970

    申请日：2018-10-24

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Chun Chi Wan ,  Ajit Ninan

    IPC: G06F3/038 ,  G09G3/36 ,  G02F1/1335 ,  G09G3/34

    Abstract: Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The light conversion layer can include quantum dot materials. Liquid crystal display (LCD) modulation drive signals are generated to determine transmission of the second light through individual color subpixels of the display. These LCD modulation drive signals can be adjusted based on one or more light field simulations to account for non-uniform, spatial color shifts. Alternatively, one or more light field simulations based on a uniformity assumption determine intermediate LCD modulation drive signals. A compensation field simulation, using backlight drive signals, is then used to adjust the intermediate LCD modulation drive signal for color correction.

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