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公开(公告)号：US12242065B2
公开(公告)日：2025-03-04
申请号：US18223686
申请日：2023-07-19
Applicant: Snap Inc.
Inventor： Branislav Micusik , Georgios Evangelidis
Abstract: Eyewear having unsynchronized rolling shutter (RS) cameras such that images produced by each camera are unaligned, and a state that includes velocity and gravity orientation in the eyewear's reference system is calculated. The state is not limited to these two parameters as other parameters such as the acceleration bias, the gyroscope bias, or both may be included. Math solvers are used such that processing time to calculate the velocity and gravity orientation are acceptable. Arranging the RS cameras in an unsynchronized configuration allows estimating the motion of the eyewear from just one stereo image pair and removes the requirement of possessing more images.
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公开(公告)号：US12092826B2
公开(公告)日：2024-09-17
申请号：US18128905
申请日：2023-03-30
Applicant: Snap Inc.
Inventor： Branislav Micusik , Georgios Evangelidis , Ramzi Zahreddine
CPC classification number: G02B27/0172 , G09G3/32 , G02B2027/014 , G02B2027/0178 , G09G2360/04
Abstract: An eXtended Reality (XR) display system includes a Light Emitting Diode (LED) display controller, and a Light Emitting Diode (LED) near-eye display element operatively coupled to the LED display driver. The LED near-eye display element includes one or more motors and an LED array operably connected to the one or more motors. During operation, the LED display driver receives video data including a rendered virtual object of an XR experience and generates LED array control signals based on the video data, the LED array control signals causing one or more LEDs of the LED array to be energized in a sequence. The LED display driver also generates synchronized motor control signals and simultaneously communicates the LED array control signals to the LED array and the synchronized motor control signals to the one or more motors causing the LED near-eye display element to display the rendered virtual object.
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公开(公告)号：US20240288696A1
公开(公告)日：2024-08-29
申请号：US18653808
申请日：2024-05-02
Applicant: Snap Inc.
Inventor： Jian Wang , Sizhuo Ma , Brevin Tilmon , Yicheng Wu , Gurunandan Krishnan Gorumkonda , Ramzi Zahreddine , Georgios Evangelidis
CPC classification number: G02B27/0172 , G06F3/013 , G06T19/006 , G02B2027/0138
Abstract: An energy-efficient adaptive 3D sensing system. The adaptive 3D sensing system includes one or more cameras and one or more projectors. The adaptive 3D sensing system captures images of a real-world scene using the one or more cameras and computes depth estimates and depth estimate confidence values for pixels of the images. The adaptive 3D sensing system computes an attention mask based on the one or more depth estimate confidence values and commands the one or more projectors to send a distributed laser beam into one or more areas of the real-world scene based on the attention mask. The adaptive 3D sensing system captures 3D sensing image data of the one or more areas of the real-world scene and generates 3D sensing data for the real-world scene based on the 3D sensing image data.
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公开(公告)号：US11915453B2
公开(公告)日：2024-02-27
申请号：US18106655
申请日：2023-02-07
Applicant: Snap Inc.
Inventor： Branislav Micusik , Georgios Evangelidis , Daniel Wagner
CPC classification number: G06T7/80 , G02B27/017 , G06T7/70 , G06T19/006 , H04N23/54 , G05G9/04737 , G06T2207/30241 , G06T2207/30244
Abstract: Eyewear providing an interactive augmented reality experience between two eyewear devices by using alignment between respective 6DOF trajectories, also referred to herein as ego motion alignment. An eyewear device of user A and an eyewear device of user B track the eyewear device of the other user, or an object of the other user, such as on the user's face, to provide the collaborative AR experience. This enables sharing common three-dimensional content between multiple eyewear users without using or aligning the eyewear devices to common image content such as a marker, which is a more lightweight solution with reduced computational burden on a processor. An inertial measurement unit may also be used to align the eyewear devices.
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公开(公告)号：US12260567B2
公开(公告)日：2025-03-25
申请号：US17973167
申请日：2022-10-25
Applicant: Snap Inc.
Inventor： Branislav Micusik , Georgios Evangelidis , Daniel Wolf
Abstract: A method for carving a 3D space using hands tracking is described. In one aspect, a method includes accessing a first frame from a camera of a display device, tracking, using a hand tracking algorithm operating at the display device, hand pixels corresponding to one or more user hands depicted in the first frame, detecting, using a sensor of the display device, depths of the hand pixels, identifying a 3D region based on the depths of the hand pixels, and applying a 3D reconstruction engine to the 3D region.
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Patent Agency Ranking
公开(公告)号：US12243266B2
公开(公告)日：2025-03-04
申请号：US18124099
申请日：2023-03-21
Applicant: Snap Inc.
Inventor： Georgios Evangelidis
IPC: G06T7/73
Abstract: A method for aligning coordinate systems from separate augmented reality (AR) devices is described. In one aspect, a first device accesses first pose data from a first Visual Inertial Odometry (VIO) system of the first device. A camera of the first device captures an image of a machine-readable code that is displayed on a display of a second device. The second device encodes the machine-readable code with second pose data from a second VIO system of the second device. The first device decodes the second pose data from the machine-readable code, and determines a relative pose between the first device and the second device based on the first pose data and the second pose data.
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公开(公告)号：US12229977B2
公开(公告)日：2025-02-18
申请号：US17529527
申请日：2021-11-18
Applicant: Snap Inc.
Inventor： Georgios Evangelidis , Branislav Micusik , Sagi Katz
Abstract: A method for AR-guided depth estimation is described. The method includes identifying a virtual object rendered in a first frame that is generated based on a first pose of an augmented reality (AR) device, determining a second pose of the AR device, the second pose following the first pose, identifying an augmentation area in the second frame based on the virtual object rendered in the first frame, and the second pose, determining depth information for the augmentation area in the second frame, and rendering the virtual object in the second frame based on the depth information.
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公开(公告)号：US20240221220A1
公开(公告)日：2024-07-04
申请号：US18442772
申请日：2024-02-15
Applicant: Snap Inc.
Inventor： Branislav Micusik , Georgios Evangelidis , Daniel Wagner
CPC classification number: G06T7/80 , G02B27/017 , G06T7/70 , G06T19/006 , H04N23/54 , G05G9/04737 , G06T2207/30241 , G06T2207/30244
Abstract: Eyewear providing an interactive augmented reality experience between two eyewear devices by using alignment between respective 6DOF trajectories, also referred to herein as ego motion alignment. An eyewear device of user A and an eyewear device of user B track the eyewear device of the other user, or an object of the other user, such as on the user's face, to provide the collaborative AR experience. This enables sharing common three-dimensional content between multiple eyewear users without using or aligning the eyewear devices to common image content such as a marker, which is a more lightweight solution with reduced computational burden on a processor. An inertial measurement unit may also be used to align the eyewear devices.
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公开(公告)号：US20240221212A1
公开(公告)日：2024-07-04
申请号：US18124099
申请日：2023-03-21
Applicant: Snap Inc.
Inventor： Georgios Evangelidis
CPC classification number: G06T7/74 , G06K19/06037 , G02B27/0101 , G06T2207/30204 , G06T2207/30244
Abstract: A method for aligning coordinate systems from separate augmented reality (AR) devices is described. In one aspect, a first device accesses first pose data from a first Visual Inertial Odometry (VIO) system of the first device. A camera of the first device captures an image of a machine-readable code that is displayed on a display of a second device. The second device encodes the machine-readable code with second pose data from a second VIO system of the second device. The first device decodes the second pose data from the machine-readable code, and determines a relative pose between the first device and the second device based on the first pose data and the second pose data.
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公开(公告)号：US20240126084A1
公开(公告)日：2024-04-18
申请号：US18299923
申请日：2023-04-13
Applicant: Snap Inc.
Inventor： Jian Wang , Sizhuo Ma , Brevin Tilmon , Yicheng Wu , Gurunandan Krishnan Gorumkonda , Ramzi Zahreddine , Georgios Evangelidis
CPC classification number: G02B27/0172 , G06F3/013 , G06T19/006 , G02B2027/0138
Abstract: An energy-efficient adaptive 3D sensing system. The adaptive 3D sensing system includes one or more cameras and one or more projectors. The adaptive 3D sensing system captures images of a real-world scene using the one or more cameras and computes depth estimates and depth estimate confidence values for pixels of the images. The adaptive 3D sensing system computes an attention mask based on the one or more depth estimate confidence values and commands the one or more projectors to send a distributed laser beam into one or more areas of the real-world scene based on the attention mask. The adaptive 3D sensing system captures 3D sensing image data of the one or more areas of the real-world scene and generates 3D sensing data for the real-world scene based on the 3D sensing image data.
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