Driver's appearance recognition system
First Claim
1. A driver'"'"'s appearance recognition system comprising:
- a camera which captures a face image of a driver'"'"'s face;
infrared light radiation means for radiating an infrared ray to the driver'"'"'s face and changing illumination intensity according to the amount of supplied current when the camera captures the face image;
appearance recognition control means for, based on a face image captured by the camera, executing a first driver'"'"'s appearance recognition process to recognize a driver'"'"'s appearance and a second driver'"'"'s appearance recognition process different from the first driver'"'"'s appearance recognition process and for controlling the camera and the infrared light radiation means; and
current amount control means for providing control that a first setup value is defined for a setup value of current supplied to the infrared light radiation means when the appearance recognition control means executes the driver'"'"'s appearance recognition process and that a second setup value different from the first setup value is defined for a setup value of current supplied to the infrared light radiation means when the appearance recognition control means executes the second driver'"'"'s appearance recognition process.
1 Assignment
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Accused Products
Abstract
A driver'"'"'s appearance recognition system comprises: a camera to capture a driver'"'"'s face image; a near infrared ray LED to radiate near infrared ray to the driver'"'"'s face; an LED current control circuit to control the amount of current supplied to the near infrared ray LED; and an image processing circuit to execute an individual authentication process and a closed-eye detection process. When the individual authentication process is executed, it is necessary to increase the illumination intensity during image capture by the camera. For this purpose, a setup current value for the LED current control circuit is set to a high current value. When the closed-eye detection process is executed, the illumination intensity needs to be ensured as much as required for the closed-eye detection process. For this purpose, a setup current value is set to a current value lower than that used for execution of the individual authentication process.
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Citations
5 Claims
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1. A driver'"'"'s appearance recognition system comprising:
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a camera which captures a face image of a driver'"'"'s face;
infrared light radiation means for radiating an infrared ray to the driver'"'"'s face and changing illumination intensity according to the amount of supplied current when the camera captures the face image;
appearance recognition control means for, based on a face image captured by the camera, executing a first driver'"'"'s appearance recognition process to recognize a driver'"'"'s appearance and a second driver'"'"'s appearance recognition process different from the first driver'"'"'s appearance recognition process and for controlling the camera and the infrared light radiation means; and
current amount control means for providing control that a first setup value is defined for a setup value of current supplied to the infrared light radiation means when the appearance recognition control means executes the driver'"'"'s appearance recognition process and that a second setup value different from the first setup value is defined for a setup value of current supplied to the infrared light radiation means when the appearance recognition control means executes the second driver'"'"'s appearance recognition process. - View Dependent Claims (2, 3, 4, 5)
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Specification