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    PROBE-BASED DYNAMIC GLOBAL ILLUMINATION
    3.
    发明申请
    PROBE-BASED DYNAMIC GLOBAL ILLUMINATION 有权

    公开(公告)号：US20210012562A1

    公开(公告)日：2021-01-14

    申请号：US16926529

    申请日：2020-07-10

    Applicant: NVIDIA Corporation

    Inventor： Morgan McGuire ,  Alexander Majercik ,  David Patrick Luebke

    IPC: G06T15/50 ,  G06T15/80 ,  G06T15/10

    Abstract: Global illumination in computer graphics refers to the modeling of how light is bounced off of one or more surfaces in a computer generated image onto other surfaces in the image (i.e. indirect light), rather than simply determining the light that hits a surface in an image directly from a light source (i.e. direct light). Rendering accurate global illumination effects in such images makes them more believable. However, simulating physically-based global illumination with offline numerical solvers has traditionally been time consuming and/or noisy and has not adapted well for dynamic scenes. The present disclosure provides a probe-based dynamic global illumination technique for computer generated scenes.

    Path planning for virtual reality locomotion
    5.
    发明授权
    Path planning for virtual reality locomotion 有权

    公开(公告)号：US10573071B2

    公开(公告)日：2020-02-25

    申请号：US16024609

    申请日：2018-06-29

    Applicant: NVIDIA Corporation

    Inventor： Qi Sun ,  Anjul Patney ,  Omer Shapira ,  Morgan McGuire ,  Aaron Eliot Lefohn ,  David Patrick Luebke

    IPC: G06T19/00 ,  G06F3/01 ,  G06T15/00

    Abstract: A method, computer readable medium, and system are disclosed for computing a path for a user to move along within a physical space while viewing a virtual environment in a virtual reality system. A path for a user to physically move along through a virtual environment is determined based on waypoints and at least one characteristic of the physical environment within which the user is positioned, position data for the user is received indicating whether and how much a current path taken by the user has deviated from the path, and an updated path is computed through the virtual environment based on the waypoints and the at least one characteristic of the physical environment.

    Stable ray tracing
    6.
    发明授权
    Stable ray tracing 有权

    公开(公告)号：US10573058B2

    公开(公告)日：2020-02-25

    申请号：US16439564

    申请日：2019-06-12

    Applicant: NVIDIA Corporation

    Inventor： David Patrick Luebke ,  Alessandro Dal Corso ,  Marco Salvi ,  Craig Eugene Kolb ,  Samuli Matias Laine

    IPC: G06T15/06

    Abstract: A method, computer readable medium, and system are disclosed for performing stable ray tracing. The method includes the steps of identifying a plurality of old hit points used in a previously rendered frame, re-projecting the plurality of old hit points within a current frame to create a plurality of samples within a screen space of the current frame, adjusting the plurality of samples within the screen space of the current frame, based on one or more criteria, for each of the plurality of samples, tracing a ray from the sample toward a corresponding old hit point for the sample to determine a current hit point corresponding to the sample for the current frame, where the current hit point may include the corresponding old hit point for the sample or an updated hit point for the sample, shading at least a portion of the plurality of current hit points to obtain a color for each of the plurality of samples within the screen space of the current frame, and reconstructing a final color for a plurality of pixels in the screen space of the current frame, utilizing the color for each of the plurality of samples within the screen space of the current frame.

    Stable ray tracing
    7.
    发明授权
    Stable ray tracing 有权

    公开(公告)号：US10388059B2

    公开(公告)日：2019-08-20

    申请号：US15724139

    申请日：2017-10-03

    Applicant: NVIDIA Corporation

    Inventor： David Patrick Luebke ,  Alessandro Dal Corso ,  Marco Salvi ,  Craig Eugene Kolb ,  Samuli Matias Laine

    IPC: G06T15/06

    Abstract: A method, computer readable medium, and system are disclosed for performing stable ray tracing. The method includes the steps of identifying a plurality of old hit points used in a previously rendered frame, re-projecting the plurality of old hit points within a current frame to create a plurality of samples within a screen space of the current frame, adjusting the plurality of samples within the screen space of the current frame, based on one or more criteria, for each of the plurality of samples, tracing a ray from the sample toward a corresponding old hit point for the sample to determine a current hit point corresponding to the sample for the current frame, where the current hit point may include the corresponding old hit point for the sample or an updated hit point for the sample, shading at least a portion of the plurality of current hit points to obtain a color for each of the plurality of samples within the screen space of the current frame, and reconstructing a final color for a plurality of pixels in the screen space of the current frame, utilizing the color for each of the plurality of samples within the screen space of the current frame.

    SYSTEMS AND METHODS FOR GAZE TRACKING
    9.
    发明申请
    SYSTEMS AND METHODS FOR GAZE TRACKING 审中-公开

    公开(公告)号：US20180164880A1

    公开(公告)日：2018-06-14

    申请号：US15809849

    申请日：2017-11-10

    Applicant: NVIDIA Corporation

    Inventor： Joohwan Kim ,  Ward Lopes ,  David Patrick Luebke ,  Chengyuan Lin

    IPC: G06F3/01 ,  G06K9/00 ,  A61B3/113

    Abstract: A method, computer readable medium, and system are disclosed for gaze tracking. The method includes the steps of receiving reflected light rays at an optical sensor, where all of the reflected light rays converge towards a rotational center of an eye and generating pattern data based on intersections of the reflected light rays at a surface of the optical sensor. A processor computes an estimated gaze direction of the eye based on the pattern data.

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