Input device and detection method
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United States of America Patent
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Jan 23, 2018
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app pub date -
Oct 20, 2015
filing date -
Nov 10, 2014
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Abstract
An input device includes: a memory configured to store a length of a finger; and a processor configured to obtain a depth image that includes a hand and has pixel values corresponding to a distance from a camera to subjects including the hand, detect a hand area that corresponds to the hand from among the subjects, from the depth image, identify a tip end of the hand area and a base of the finger, identify a first three-dimensional position that corresponds to the tip end and a second three-dimensional position that corresponds to the base, based on the pixel values of the depth image, identify a direction from the second three-dimensional position to the first three-dimensional position, calculate a third three-dimensional position that corresponds to a fingertip of the finger based on the direction and the length, and generate an input signal according to the third three-dimensional position.
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