Operation detection device, operation detection method and projector
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United States of America Patent
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Jun 14, 2016
Grant Date -
Sep 11, 2014
app pub date -
Feb 24, 2014
filing date -
Mar 11, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An operation detection device includes: first and second illuminations that irradiate illumination light from different positions onto an operation surface on which a user performs an operation; a camera that captures the operation surface together with an operation part (finger) of the user; a shadow region extraction unit that extracts first and second shadows of the operation part of the user from a captured image obtained by the camera; a contour detection unit that detects contours of each of the first and second shadows extracted; and a touch point detection unit that detects a touch point of the operation part of the user on the operation surface from the distance between the contours.
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