Image processing systems and methods
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United States of America Patent
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Nov 8, 2022
Grant Date -
Apr 30, 2020
app pub date -
Dec 10, 2019
filing date -
Feb 13, 2015
priority date (Note) -
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status (Latency Note)
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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.
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