Abstract: An image capture system comprises a camera configured to capture an image of a whiteboard, or similar, viewed from an acute angle. A linear polarizer has a surface substantially perpendicular to a plane of the board and an axis of polarization substantially perpendicular to the plane of the board or within 30° of the perpendicular to the plane of the board. The camera is configured to capture the image of the board through the polarizer. A normal to the polarizer is directed in a different direction to a direction defined by an optic axis of the camera.
Type:
Grant
Filed:
December 10, 2019
Date of Patent:
November 8, 2022
Assignee:
Poly Communications International Unlimited Company
Inventors:
Raul Benet Ballester, Eyal Katz, Barak Maoz, Adrian James Cable, Euan Christopher Smith, Gareth John McCaughan, Shane Thornton