Hand pattern switch device
First Claim
1. A hand pattern switch device having image pickup means for picking up an image of a distal arm that is within a predetermined image pickup zone, and detecting a hand pattern and/or a motion of a finger of a hand from the image picked up by the image pickup means to obtain predetermined switch operation information, comprising:
- first image processing means for determining a central axis passing through a center of the arm based on the picked-up image;
scanning line setting means for setting at least either a first scanning line extending perpendicular to the central axis or a second scanning line extending along the central axis; and
determination means for determining whether or not any finger of the hand is extended based on the at least either the first or second scanning line set by the scanning line setting means.
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Accused Products
Abstract
A hand pattern switch device capable of easily and reliably detecting a hand pattern or a palm motion of an operator. From a picked-up image of a distal arm, an axis passing through the centroid of a hand is determined as a central axis passing through the center of arm. At least either first scanning lines perpendicular to the central axis or second scanning lines extending along the central axis are set between a fingertip and a palm center. While changing the scanning line to be examined from the fingertip side toward the palm center, a determination is made to determine how many number of scanning lines for each of which a finger width equal to or larger than a predetermined width is detected are present, thereby making a detection of whether or not the finger is extended from the palm.
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Citations
15 Claims
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1. A hand pattern switch device having image pickup means for picking up an image of a distal arm that is within a predetermined image pickup zone, and detecting a hand pattern and/or a motion of a finger of a hand from the image picked up by the image pickup means to obtain predetermined switch operation information, comprising:
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first image processing means for determining a central axis passing through a center of the arm based on the picked-up image;
scanning line setting means for setting at least either a first scanning line extending perpendicular to the central axis or a second scanning line extending along the central axis; and
determination means for determining whether or not any finger of the hand is extended based on the at least either the first or second scanning line set by the scanning line setting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification