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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
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.
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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
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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公开(公告)号：US12092820B2
公开(公告)日：2024-09-17
申请号：US17475081
申请日：2021-09-14
Applicant: NVIDIA Corporation
Inventor： Jonghyun Kim , Ward Lopes , David Luebke , Manu Gopakumar
CPC classification number: G02B27/0103 , G02B7/04 , G02B27/0172 , G03H1/2294 , G06F3/013 , G06T19/006 , G02B2027/0174 , G02B2027/0178 , G03H2223/16 , G03H2223/19 , G03H2223/22
Abstract: Virtual reality (VR) displays are computer displays that present images or video in a manner that simulates a real experience for the viewer. In many cases, VR displays are implemented as head-mounted displays (HMDs) which provide a display in the line of sight of the user. Because current HMDs are composed of a display panel and magnifying lens with a gap therebetween, proper functioning of the HMDs limits their design to a box-like form factor, thereby negatively impacting both comfort and aesthetics. The present disclosure provides a different configuration for a virtual reality display which allows for improved comfort and aesthetics, including specifically at least one coherent light source, at least one holographic waveguide coupled to the at least one coherent light source to receive light therefrom, and at least one spatial light modulator coupled to the at least one holographic waveguide to modulate the light.
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公开(公告)号：US11747766B2
公开(公告)日：2023-09-05
申请号：US17189960
申请日：2021-03-02
Applicant: NVIDIA Corporation
Inventor： Fu-Chung Huang , Ward Lopes , Liang Shi
CPC classification number: G03H1/02 , G02B27/0172 , G03H1/0808 , G03H1/2294 , G02B2027/0123 , G02B2027/0174 , G03H2001/0224 , G03H2210/36 , G03H2210/45
Abstract: A method for rendering a light field comprises projecting rays from a viewpoint positioned at a first side of a spatial light modulator (SLM) to a clipping plane positioned at an opposing side of the SLM to form an elemental view frustum within a three-dimensional scene and rendering objects within the elemental view frustum to generate components of a first elemental image for the first elemental region. The SLM may include a tiled array of non-overlapping elemental regions and a top edge and a bottom edge of a first elemental region of the non-overlapping elemental regions are intersected by the rays to form the elemental view frustum. Furthermore, the light field may include the first elemental image and additional elemental images corresponding to the array of elemental regions and each one of the additional elemental images is rendered using an additional elemental view frustum.
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公开(公告)号：US10969740B2
公开(公告)日：2021-04-06
申请号：US15946576
申请日：2018-04-05
Applicant: NVIDIA Corporation
Inventor： Liang Shi , Fu-Chung Huang , Ward Lopes
Abstract: A method for rendering a light field comprises projecting rays from a viewpoint positioned at a first side of a spatial light modulator (SLM) to a clipping plane positioned at an opposing side of the SLM to form an elemental view frustum within a three-dimensional scene and rendering objects within the elemental view frustum to generate components of a first elemental image for the first elemental region. The SLM may include a tiled array of non-overlapping elemental regions and a top edge and a bottom edge of a first elemental region of the non-overlapping elemental regions are intersected by the rays to form the elemental view frustum. Furthermore, the light field may include the first elemental image and additional elemental images corresponding to the array of elemental regions and each one of the additional elemental images is rendered using an additional elemental view frustum.
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Patent Agency Ranking
公开(公告)号：US10664049B2
公开(公告)日：2020-05-26
申请号：US15809849
申请日：2017-11-10
Applicant: NVIDIA Corporation
Inventor： Joohwan Kim , Ward Lopes , David Patrick Luebke , Chengyuan Lin
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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公开(公告)号：US20240223991A1
公开(公告)日：2024-07-04
申请号：US18147915
申请日：2022-12-29
Applicant: NVIDIA Corporation
Inventor： Michael Stengel , Ward Lopes , Joohwan Kim , David Luebke
Abstract: The disclosure provides a method for audio calibration that uses audio simulation and reconstructed surface information from images or video recordings along with recorded sound. The surface component of the method introduces knowledge that enables audio wave propagation simulation for a particular location. Using the simulation results the sound distribution can be optimized. For example, unwanted audio reflection and occlusion can be recognized and resolved. In one example, the disclosure provides a method for improving acoustics at a location that includes: (1) generating a geometric model of a location using visual data obtained from the location, wherein the location includes an audio system, and (2) simulating, using the geometric model, movement of sound waves in the location that originate from the audio system. The disclosure also provides a computer system, a computer program product, and a mobile computing device that include features for improving acoustics at a location.
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公开(公告)号：US20220334395A1
公开(公告)日：2022-10-20
申请号：US17670337
申请日：2022-02-11
Applicant: NVIDIA Corporation
Inventor： Jonghyun Kim , Ward Lopes , David Patrick Luebke , Manu Gopakumar
Abstract: Virtual reality (VR) displays are computer displays that present images or video in a manner that simulates a real experience for the viewer. In many cases, VR displays are implemented as head-mounted displays (HMDs) which provide a display in the line of sight of the user. Because current HMDs are composed of a display panel and magnifying lens with a gap therebetween, proper functioning of the HMDs limits their design to a box-like form factor, thereby negatively impacting both comfort and aesthetics. The present disclosure provides a different configuration for a VR display which allows for improved comfort and aesthetics, including specifically at least one coherent light source, at least one pupil replicating waveguide coupled to the at least one coherent light source to receive light therefrom, and at least one spatial light modulator coupled to the at least one pupil replicating waveguide to modulate the light.
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公开(公告)号：US20220334392A1
公开(公告)日：2022-10-20
申请号：US17475081
申请日：2021-09-14
Applicant: NVIDIA Corporation
Inventor： Jonghyun Kim , Ward Lopes , David Luebke , Manu Gopakumar
Abstract: Virtual reality (VR) displays are computer displays that present images or video in a manner that simulates a real experience for the viewer. In many cases, VR displays are implemented as head-mounted displays (HMDs) which provide a display in the line of sight of the user. Because current HMDs are composed of a display panel and magnifying lens with a gap therebetween, proper functioning of the HMDs limits their design to a box-like form factor, thereby negatively impacting both comfort and aesthetics. The present disclosure provides a different configuration for a virtual reality display which allows for improved comfort and aesthetics, including specifically at least one coherent light source, at least one holographic waveguide coupled to the at least one coherent light source to receive light therefrom, and at least one spatial light modulator coupled to the at least one holographic waveguide to modulate the light.
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公开(公告)号：US20210181674A1
公开(公告)日：2021-06-17
申请号：US17189960
申请日：2021-03-02
Applicant: NVIDIA Corporation
Inventor： Fu-Chung Huang , Ward Lopes , Liang Shi
Abstract: A method for rendering a light field comprises projecting rays from a viewpoint positioned at a first side of a spatial light modulator (SLM) to a clipping plane positioned at an opposing side of the SLM to form an elemental view frustum within a three-dimensional scene and rendering objects within the elemental view frustum to generate components of a first elemental image for the first elemental region. The SLM may include a tiled array of non-overlapping elemental regions and a top edge and a bottom edge of a first elemental region of the non-overlapping elemental regions are intersected by the rays to form the elemental view frustum. Furthermore, the light field may include the first elemental image and additional elemental images corresponding to the array of elemental regions and each one of the additional elemental images is rendered using an additional elemental view frustum.
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