Manipulation detection apparatus, manipulation detection method, and projector
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United States of America Patent
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Dec 11, 2018
Grant Date -
Sep 11, 2014
app pub date -
Feb 4, 2014
filing date -
Mar 11, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A shadow region extraction portion compares the brightness of an image captured by a camera with a threshold value and extracts first and second shadows caused by first and second light sources for a user's finger. An approach degree detection portion detects an approach degree for the finger with reference to a manipulation surface from distance d between two feature points in the first and second shadows. A contact point detection portion detects contact point P for the finger with reference to the manipulation surface from positions of the two feature points. A direction detection portion detects a direction pointed by the finger from directions of contours corresponding to the first and second shadows. A display control portion generates display control data for a manipulation target apparatus based on detection result data.
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