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公开(公告)号：US20230297164A1
公开(公告)日：2023-09-21
申请号：US18201419
申请日：2023-05-24
申请人： Snap Inc.
发明人： Jeroen Diederik Hol , Matthias Kalkgruber , Erick Mendez Mendez , Niall Murphy , Gerald Nilles , Mathieu Emmanuel Vignau
CPC分类号： G06F3/012 , G01C21/1656 , G02B27/0172 , G02B27/0179 , G06F3/14 , G06T7/20 , G02B2027/0138 , G02B2027/014 , G02B2027/0178
摘要： A method for improving the startup time of a six-degrees of freedom tracking system is described. An augmented reality system receives a device initialization request and activates a first set of sensors in response to the device initialization request. The augmented reality system receives first tracking data from the first set of sensors. The augmented reality system receives an augmented reality experience request and in response to the augmented reality request, causes display of a set of augmented reality content items based on the first tracking data and simultaneously activates a second set of sensors. The augmented reality system receives second tracking data from the activated second set of sensors. The augmented reality system updates the display of the set of augmented reality content items based on the second tracking data.
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公开(公告)号：US20240176428A1
公开(公告)日：2024-05-30
申请号：US18435540
申请日：2024-02-07
申请人： Snap Inc.
IPC分类号： G06F3/0346 , G06F3/038
CPC分类号： G06F3/0346 , G06F3/038
摘要： A method for dynamically initializing a 3 degrees of freedom (3DOF) tracking device is described. In one aspect, the method includes accessing a gyroscope signal from a gyroscope of the 3DOF tracking device, accessing an accelerometer signal from an accelerometer of the 3DOF tracking device, determining an initial state includes a combination of an initial orientation, an initial position, and an initial velocity of the 3DOF tracking device, the initial state indicating a starting condition of the 3DOF tracking device, integrating the gyroscope signal and the accelerometer signal to obtain orientation and position signals using the initial state, and refining an inclination signal of the orientation signal using the position signal.
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公开(公告)号：US20220365592A1
公开(公告)日：2022-11-17
申请号：US17743194
申请日：2022-05-12
申请人： Snap Inc.
发明人： Jeroen Diederik Hol , Matthias Kalkgruber , Erick Mendez Mendez , Niall Murphy , Gerald Nilles , Mathieu Emmanuel Vignau
摘要： A method for improving the startup time of a six-degrees of freedom tracking system is described. An augmented reality system receives a device initialization request and activates a first set of sensors in response to the device initialization request. The augmented reality system receives first tracking data from the first set of sensors. The augmented reality system receives an augmented reality experience request and in response to the augmented reality request, causes display of a set of augmented reality content items based on the first tracking data and simultaneously activates a second set of sensors. The augmented reality system receives second tracking data from the activated second set of sensors. The augmented reality system updates the display of the set of augmented reality content items based on the second tracking data.
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公开(公告)号：US11681361B2
公开(公告)日：2023-06-20
申请号：US17743194
申请日：2022-05-12
申请人： Snap Inc.
发明人： Jeroen Diederik Hol , Matthias Kalkgruber , Erick Mendez Mendez , Niall Murphy , Gerald Nilles , Mathieu Emmanuel Vignau
CPC分类号： G06F3/012 , G01C21/1656 , G02B27/0172 , G02B27/0179 , G06F3/14 , G06T7/20 , G02B2027/014 , G02B2027/0138 , G02B2027/0178
摘要： A method for improving the startup time of a six-degrees of freedom tracking system is described. An augmented reality system receives a device initialization request and activates a first set of sensors in response to the device initialization request. The augmented reality system receives first tracking data from the first set of sensors. The augmented reality system receives an augmented reality experience request and in response to the augmented reality request, causes display of a set of augmented reality content items based on the first tracking data and simultaneously activates a second set of sensors. The augmented reality system receives second tracking data from the activated second set of sensors. The augmented reality system updates the display of the set of augmented reality content items based on the second tracking data.
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公开(公告)号：US20240248531A1
公开(公告)日：2024-07-25
申请号：US18623982
申请日：2024-04-01
申请人： Snap Inc.
发明人： Jeroen Diederik Hol , Matthias Kalkgruber , Erick Mendez Mendez , Niall Murphy , Gerald Nilles , Mathieu Emmanuel Vignau
CPC分类号： G06F3/012 , G01C21/1656 , G02B27/0172 , G02B27/0179 , G06F3/14 , G06T7/20 , G02B2027/0138 , G02B2027/014 , G02B2027/0178
摘要： A method for improving the startup time of a six-degrees of freedom tracking system is described. An augmented reality system receives a device initialization request and activates a first set of sensors in response to the device initialization request. The augmented reality system receives first tracking data from the first set of sensors. The augmented reality system receives an augmented reality experience request and in response to the augmented reality request, causes display of a set of augmented reality content items based on the first tracking data and simultaneously activates a second set of sensors. The augmented reality system receives second tracking data from the activated second set of sensors. The augmented reality system updates the display of the set of augmented reality content items based on the second tracking data.
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公开(公告)号：US20220374091A1
公开(公告)日：2022-11-24
申请号：US17524423
申请日：2021-11-11
申请人： Snap Inc.
IPC分类号： G06F3/0346 , G06F3/038
摘要： A method for dynamically initializing a 3 degrees of freedom (3DOF) tracking device is described. In one aspect, the method includes accessing a gyroscope signal from a gyroscope of the 3DOF tracking device, accessing an accelerometer signal from an accelerometer of the 3DOF tracking device, determining an initial state includes a combination of an initial orientation, an initial position, and an initial velocity of the 3DOF tracking device, the initial state indicating a starting condition of the 3DOF tracking device, integrating the gyroscope signal and the accelerometer signal to obtain orientation and position signals using the initial state, and refining an inclination signal of the orientation signal using the position signal.
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公开(公告)号：US20240312145A1
公开(公告)日：2024-09-19
申请号：US18184333
申请日：2023-03-15
申请人： Snap Inc.
CPC分类号： G06T19/006 , G01C21/1652 , G01C21/1656 , G02B27/0172 , G06V10/761 , G02B2027/0178
摘要： A method for correcting bending of a flexible display device is described. The method includes forming a plurality of sensor groups of an augmented reality (AR) display device, where one of the plurality of sensor groups includes a combination of a camera, an IMU (inertial measurement unit), and a component, each being tightly coupled to each other, a spatial relationship between the camera, the IMU sensor, or the component being predefined, accessing sensor groups data from the plurality of sensor groups, estimating a spatial relationship between the plurality of sensor groups based on the sensor groups data, and displaying virtual content in a display of the AR display device based on the spatial relationship between the plurality of sensor groups.
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公开(公告)号：US20240192024A1
公开(公告)日：2024-06-13
申请号：US18063450
申请日：2022-12-08
申请人： Snap Inc.
发明人： Georg Halmetschlager-Funek , Jeroen Diederik Hol , Matthias Kalkgruber , Tiago Miguel Pereira Torres
CPC分类号： G01C25/005 , G01C21/1656 , G06F3/012
摘要： A method for calibrating a visual-inertial tracking system is described. In one aspect, a method includes measuring a temperature of an inertial measurement unit (IMU) of a visual-inertial tracking system, identifying, from an IMU parametric model of an IMU calibration module, an IMU intrinsic parameter estimate corresponding to the temperature, determining an online IMU intrinsic parameter estimate by operating the visual-inertial tracking system with the IMU intrinsic parameter estimate, providing the online IMU intrinsic parameter estimate to the IMU calibration module, and updating and incorporating the IMU parametric model with the online IMU intrinsic parameter estimate.
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公开(公告)号：US12008155B2
公开(公告)日：2024-06-11
申请号：US18201419
申请日：2023-05-24
申请人： Snap Inc.
发明人： Jeroen Diederik Hol , Matthias Kalkgruber , Erick Mendez Mendez , Niall Murphy , Gerald Nilles , Mathieu Emmanuel Vignau
CPC分类号： G06F3/012 , G01C21/1656 , G02B27/0172 , G02B27/0179 , G06F3/14 , G06T7/20 , G02B2027/0138 , G02B2027/014 , G02B2027/0178
摘要： A method for improving the startup time of a six-degrees of freedom tracking system is described. An augmented reality system receives a device initialization request and activates a first set of sensors in response to the device initialization request. The augmented reality system receives first tracking data from the first set of sensors. The augmented reality system receives an augmented reality experience request and in response to the augmented reality request, causes display of a set of augmented reality content items based on the first tracking data and simultaneously activates a second set of sensors. The augmented reality system receives second tracking data from the activated second set of sensors. The augmented reality system updates the display of the set of augmented reality content items based on the second tracking data.
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公开(公告)号：US11941184B2
公开(公告)日：2024-03-26
申请号：US17524423
申请日：2021-11-11
申请人： Snap Inc.
IPC分类号： G06F3/0346 , G06F3/038
CPC分类号： G06F3/0346 , G06F3/038
摘要： A method for dynamically initializing a 3 degrees of freedom (3DOF) tracking device is described. In one aspect, the method includes accessing a gyroscope signal from a gyroscope of the 3DOF tracking device, accessing an accelerometer signal from an accelerometer of the 3DOF tracking device, determining an initial state includes a combination of an initial orientation, an initial position, and an initial velocity of the 3DOF tracking device, the initial state indicating a starting condition of the 3DOF tracking device, integrating the gyroscope signal and the accelerometer signal to obtain orientation and position signals using the initial state, and refining an inclination signal of the orientation signal using the position signal.
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