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    Estimating product integrals using a composition of warps
    41.
    发明授权
    Estimating product integrals using a composition of warps 有权

    公开(公告)号：US11055381B1

    公开(公告)日：2021-07-06

    申请号：US16900046

    申请日：2020-06-12

    Applicant: NVIDIA Corporation

    Inventor： David Augustus Hart ,  Matthew Milton Pharr ,  Thomas Müller ,  Ward Lopes ,  Morgan McGuire ,  Peter Schuyler Shirley

    IPC: G06T11/00 ,  G06F17/17 ,  G06T3/00 ,  G06N3/08 ,  G06N3/04

    Abstract: Sampling a function is used for many applications, such as rendering images. The challenge is how to select the best samples to minimize computations and produce accurate results. An alternative is to use a larger number of samples that may not be carefully selected in an attempt to increase accuracy. For a function that is an integral, such as functions used to render images, a sample distribution may be computed by inverting the integral. Unfortunately, for many integrals, it is neither easy nor practical to compute the inverted integral. Instead, warp functions may be combined to provide a sample distribution that accurately approximates the factors of the product being integrated. Each warp function approximates an inverted term of the product while accounting for the effects of warp functions approximating other factors in the product. The selected warp functions are customized or “fitted” to implement importance sampling for the approximated product.

    PROBE-BASED DYNAMIC GLOBAL ILLUMINATION
    42.
    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.

    Image illumination rendering system and method
    43.
    发明授权
    Image illumination rendering system and method 有权

    公开(公告)号：US10713838B2

    公开(公告)日：2020-07-14

    申请号：US14270252

    申请日：2014-05-05

    Applicant: NVIDIA Corporation

    Inventor： Morgan McGuire ,  David Luebke ,  Cyril Crassin ,  Peter-Pike Sloan ,  Peter Shirley ,  Brent Oster ,  Christopher Wyman ,  Michael Mara

    IPC: G06T15/50 ,  G06T15/80

    Abstract: The present invention facilitates efficient and effective image processing. A network can comprise: a first system configured to perform a first portion of lighting calculations for an image and combing results of the first portion of lighting calculations for the image with results of a second portion of lighting calculations; and a second system configured to perform the second portion of lighting calculations and forward the results of the second portion of the lighting calculations to the first system. The first and second portion of lighting calculations can be associated with indirect lighting calculations and direct lighting calculations respectively. The first system can be a client in a local location and the second system can be a server in a remote location (e.g., a cloud computing environment). The first system and second system can be in a cloud and a video is transmitted to a local system.

    Path planning for virtual reality locomotion
    45.
    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.

    SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR SAMPLING A HIERARCHICAL DEPTH MAP
    47.
    发明申请
    SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR SAMPLING A HIERARCHICAL DEPTH MAP 有权
    用于采样分层深度图的系统，方法和计算机程序产品

    公开(公告)号：US20140146045A1

    公开(公告)日：2014-05-29

    申请号：US13685599

    申请日：2012-11-26

    Applicant: NVIDIA CORPORATION

    Inventor： Morgan McGuire ,  David Patrick Luebke ,  Michael Thomas Mara

    IPC: G06T15/40

    CPC classification number: G06T15/405 ,  G06T15/50 ,  G06T15/506 ,  G06T15/55 ,  G06T15/60 ,  G06T15/80 ,  G06T2215/12

    Abstract: A system, process, and computer program product are provided for sampling a hierarchical depth map. An approach for sampling the hierarchical depth map includes the steps of generating a hierarchical depth map and reading a value associated with a sample pixel from a target level of the hierarchical depth map based on a difference between the sample pixel and a target pixel. The hierarchical depth map includes at least two levels.

    Abstract translation: 提供了系统，过程和计算机程序产品，用于对分层深度图进行采样。 用于对层次深度图进行采样的方法包括以下步骤：基于样本像素和目标像素之间的差异，生成分层深度图并从层次深度图的目标水平读取与样本像素相关联的值。 层次深度图包括至少两个层次。

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