Driver monitoring device
First Claim
1. A driver monitoring system comprising:
- projecting means for projecting a pattern of bright spots on a face of a driver;
pick-up means for picking up said pattern of bright spots to provide an image of the face;
data processing means for processing said image, sampling the driver'"'"'s face to acquire three-dimensional position data at sampling points and processing the data thus acquired to provide an inclination of the face; and
decision means for deciding whether or not the driver is in a dangerous state in accordance with the inclination of the face obtained.
1 Assignment
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Accused Products
Abstract
In a driver monitoring system, a pattern projecting device consisting of two fiber gratings stacked orthogonally which receive light from a light source projects a pattern of bright spots on a face of a driver. A image pick-up device picks up the pattern of bright spots to provide an image of the face. A data processing device processes the image, samples the driver'"'"'s face to acquire three-dimensional position data at sampling points and processing the data thus acquired to provide inclinations of the face of the driver in vertical, horizontal and oblique directions. A decision device decides whether or not the driver is in a dangerous state in accordance with the inclinations of the face obtained. A warning device warns the driver against his dangerous state. The pattern light projecting device and pick-up device are integrated to each other and installed on a steering column on a vehicle. Thus, the driver monitoring system can assure performance, reliability and safety without hindering the driver in view of its installation on the vehicle.
113 Citations
9 Claims
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1. A driver monitoring system comprising:
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projecting means for projecting a pattern of bright spots on a face of a driver; pick-up means for picking up said pattern of bright spots to provide an image of the face; data processing means for processing said image, sampling the driver'"'"'s face to acquire three-dimensional position data at sampling points and processing the data thus acquired to provide an inclination of the face; and decision means for deciding whether or not the driver is in a dangerous state in accordance with the inclination of the face obtained. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification