DYNAMIC ADJUSTMENT OF EXPOSURE AND ISO TO LIMIT MOTION BLUR

    公开(公告)号:US20230388632A1

    公开(公告)日:2023-11-30

    申请号:US18233729

    申请日:2023-08-14

    Applicant: Snap Inc.

    CPC classification number: H04N23/6811 H04N23/684 H04N23/6812 G06T19/006

    Abstract: A method for limiting motion blur in a visual tracking system is described. In one aspect, the method includes accessing a first image generated by an optical sensor of the visual tracking system, identifying camera operating parameters of the optical sensor for the first image, determining a motion of the optical sensor for the first image, determining a motion blur level of the first image based on the camera operating parameters of the optical sensor and the motion of the optical sensor, and adjusting the camera operating parameters of the optical sensor based on the motion blur level.

    PERIODIC PARAMETER ESTIMATION FOR VISUAL-INERTIAL TRACKING SYSTEMS

    公开(公告)号:US20230205311A1

    公开(公告)日:2023-06-29

    申请号:US18116511

    申请日:2023-03-02

    Applicant: Snap Inc.

    CPC classification number: G06F3/012 G06F3/038 H04L67/131 G06F2203/0383

    Abstract: A method for calibrating a visual-inertial tracking system is described. A device operates the visual-inertial tracking system without receiving a tracking request from a virtual object display application. In response to operating the visual-inertial tracking system, the device accesses sensor data from sensors at the device. The device identifies, based on the sensor data, a first calibration parameter value of the visual-inertial tracking system and stores the first calibration parameter value. The system detects a tracking request from the virtual object display application. In response to the tracking request, the system accesses the first calibration parameter value and determines a second calibration parameter value from the first calibration parameter value.

    Bending-assisted calibration for extended reality tracking

    公开(公告)号:US12271517B1

    公开(公告)日:2025-04-08

    申请号:US18478352

    申请日:2023-09-29

    Applicant: Snap Inc.

    Abstract: Bending data is used to facilitate tracking operations of an extended reality (XR) device, such as hand tracking or other object tracking operations. The XR device obtains bending data indicative of bending of the XR device to accommodate a body part of a user wearing the XR device. The XR device determines, based on the bending data, whether to use previously identified biometric data in a tracking operation. A mode of the XR device is selected responsive to determining whether to use the previously identified biometric data. The selected mode is used to initialize the tracking operation. The selected mode may be a first mode in which the previously identified biometric data is used in the tracking operation or a second mode in which the previously identified biometric data is not used in the tracking operation.

    3D space carving using hands for object capture

    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.

    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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