Drowsiness detector
First Claim
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1. A drowsiness detector comprising:
- an eyebrow positioning unit for determining a position of each of at least two horizontally-separate measurement points set on at least one of right and left eyebrows; and
a detection unit for detecting drowsiness based on a vertical movement of the measurement points.
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Abstract
A drowsiness detector detects the drowsiness by measuring a distance of an eyebrow at three points from a reference line defined by an inner eye corner and an outer eye corner. The three distances of the eyebrow from the reference line are respectively standardized by an inter-eye distance between the inner eye corners of the left and right eyes, and are respectively compared with thresholds for determining the rise of the eyebrow. The rise of the eyebrow is then translated as the start of the drowsiness, and is associated with an operation such as a doze prevention operation or the like.
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Citations
15 Claims
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1. A drowsiness detector comprising:
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an eyebrow positioning unit for determining a position of each of at least two horizontally-separate measurement points set on at least one of right and left eyebrows; and a detection unit for detecting drowsiness based on a vertical movement of the measurement points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of detecting drowsiness comprising steps of:
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determining a position of each of at least two horizontally-separate measurement points that define at least one of right and left eyebrows; and detecting drowsiness based on a vertical movement of the measurement points.
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Specification