公开(公告)号：US11765457B2

公开(公告)日：2023-09-19

申请号：US17522642

申请日：2021-11-09

Applicant: Snap Inc.

Inventor： Bo Ding ,  Ozi Egri ,  Matthias Kalkgruber ,  Daniel Wolf

IPC: H04N23/68 ,  G06T19/00

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.

公开(公告)号：US20220377306A1

公开(公告)日：2022-11-24

申请号：US17747564

申请日：2022-05-18

Applicant: Snap Inc.

Inventor： Olha Borys ,  Georg Halmetschlager-Funek ,  Matthias Kalkgruber ,  Daniel Wolf ,  Jakob Zillner

IPC: H04N13/128 ,  G06T7/73 ,  H04N13/239

Abstract: Disclosed are systems, methods, and non-transitory computer-readable media for misaligned vantage point mitigation for computer stereo vision. A misaligned vantage point mitigation system determines whether vantage points of the optical sensors are misaligned from an expected vantage point and, if so, determines an adjustment variable to mitigate the misalignment based on the location of matching features identified in images captured by both optical sensors.

公开(公告)号：US20220377239A1

公开(公告)日：2022-11-24

申请号：US17522642

申请日：2021-11-09

Applicant: Snap Inc.

Inventor： Bo Ding ,  Ozi Egri ,  Matthias Kalkgruber ,  Daniel Wolf

IPC: H04N5/232

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.

公开(公告)号：US20220375128A1

公开(公告)日：2022-11-24

申请号：US17448655

申请日：2021-09-23

Applicant: Snap Inc.

Inventor： Clemens Birklbauer ,  Georg Halmetschlager-Funek ,  Matthias Kalkgruber ,  Kai Zhou

IPC: G06T7/80 ,  G06K9/46 ,  H04N5/232 ,  H04N17/00

Abstract: A method for adjusting camera intrinsic parameters of a multi-camera visual tracking device is described. In one aspect, a method for calibrating the multi-camera visual tracking system includes disabling a first camera of the multi-camera visual tracking system while a second camera of the multi-camera visual tracking system is enabled, detecting a first set of features in a first image generated by the first camera after detecting that the temperature of the first camera is within the threshold of the factory calibration temperature of the first camera, and accessing and correcting intrinsic parameters of the second camera based on the projection of the first set of features in the second image and a second set of features in the second image.