Digital device and driver monitoring method thereof
First Claim
1. A digital device comprising:
- a first illumination unit configured to generate a first light;
a second illumination unit configured to generate a second light;
a first camera unit;
a second camera unit; and
a control unit configured to;
check whether a brightness of an image obtained from the first camera unit is equal to or greater than a reference value or whether a driver is detected from an image obtained from the second camera unit, and check whether a brightness of an image obtained from the second camera unit is equal to or greater than a reference value or whether the driver is detected from an image obtained from the first camera unit,if the brightness of the image obtained from the first camera unit is not equal to or greater than the reference value or if the driver is not detected from the image obtained from the second camera unit, obtaining a first comparative image from the first camera unit by turning off the second illumination unit and obtaining a second comparative image from the first camera unit by turning on the second illumination unit, and if the brightness of the image obtained from the second camera unit is less than the reference value or if the driver is not detected from the image obtained from the first camera unit, obtaining a third comparative image from the second camera unit by turning off the first illumination unit and obtaining a fourth comparative image from the second camera unit by turning on the first illumination unit,check whether a difference value between the brightness of the first comparative image and the brightness of the second comparative image is equal to or greater than a reference difference value, and check whether a difference value between the brightness of the third comparative image and the brightness of the fourth comparative image is equal to or greater than a reference difference value, andif the difference value between the brightness of the obtained first comparative image and the brightness of the obtained second comparative image is not equal to or greater than the reference difference value, turning off the second illumination unit, and if the difference value between the brightness of the obtained third comparative image and the brightness of the obtained fourth comparative image is less than the reference difference value, turning off the first illumination unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of monitoring a driver including obtaining images from the first and second camera unit, checking whether a brightness of the image obtained from the first camera unit is equal to or greater than a reference value or whether the driver is detected from the image obtained from the second camera unit, if the brightness of the image obtained from the first camera unit is not equal to or greater than the reference value or the driver is not detected from the image obtained from the second camera unit, obtaining a first comparative image from the first camera unit by turning off the second illumination unit and a second comparative image from the first camera unit by turning on the second illumination unit, checking whether a difference value between a brightness of the obtained first comparative image and a brightness of the obtained second comparative image is equal to or greater than a reference difference value, and if the difference value between the brightness of the obtained f comparative image and the brightness of the obtained second comparative image is not equal to or greater than the reference difference value, turning off the second illumination unit.
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Citations
20 Claims
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1. A digital device comprising:
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a first illumination unit configured to generate a first light; a second illumination unit configured to generate a second light; a first camera unit; a second camera unit; and a control unit configured to; check whether a brightness of an image obtained from the first camera unit is equal to or greater than a reference value or whether a driver is detected from an image obtained from the second camera unit, and check whether a brightness of an image obtained from the second camera unit is equal to or greater than a reference value or whether the driver is detected from an image obtained from the first camera unit, if the brightness of the image obtained from the first camera unit is not equal to or greater than the reference value or if the driver is not detected from the image obtained from the second camera unit, obtaining a first comparative image from the first camera unit by turning off the second illumination unit and obtaining a second comparative image from the first camera unit by turning on the second illumination unit, and if the brightness of the image obtained from the second camera unit is less than the reference value or if the driver is not detected from the image obtained from the first camera unit, obtaining a third comparative image from the second camera unit by turning off the first illumination unit and obtaining a fourth comparative image from the second camera unit by turning on the first illumination unit, check whether a difference value between the brightness of the first comparative image and the brightness of the second comparative image is equal to or greater than a reference difference value, and check whether a difference value between the brightness of the third comparative image and the brightness of the fourth comparative image is equal to or greater than a reference difference value, and if the difference value between the brightness of the obtained first comparative image and the brightness of the obtained second comparative image is not equal to or greater than the reference difference value, turning off the second illumination unit, and if the difference value between the brightness of the obtained third comparative image and the brightness of the obtained fourth comparative image is less than the reference difference value, turning off the first illumination unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling a digital device for monitoring a driver, the digital device including a first illumination unit, a second illumination unit, a first camera unit and a second camera unit, the method comprising:
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obtaining images from the first camera unit and the second camera unit; checking, via a control unit of the digital device, whether a brightness of the image obtained from the first camera unit is equal to or greater than a reference value or whether the driver is detected from the image obtained from the second camera unit, and checking, via the control unit of the digital device, whether a brightness of the image obtained from the second camera unit is equal to or greater than a reference value or whether the driver is detected from the image obtained from the first camera unit; if the brightness of the image obtained from the first camera unit is not equal to or greater than the reference value or the driver is not detected from the image obtained from the second camera unit, obtaining a first comparative image from the first camera unit by turning off the second illumination unit and a second comparative image from the first camera unit by turning on the second illumination unit, and if the brightness of the image obtained from the second camera unit is less than the reference value or the driver is not detected from the image obtained from the first camera unit, obtaining a third comparative image from the second camera unit by turning off the first illumination unit and a fourth comparative image from the second camera unit by turning on the first illumination unit; checking whether a difference value between a brightness of the obtained first comparative image and a brightness of the obtained second comparative image is equal to or greater than a reference difference value, and checking whether a difference value between a brightness of the obtained third comparative image and a brightness of the obtained fourth comparative image is equal to or greater than a reference difference value; and if the difference value between the brightness of the obtained first comparative image and the brightness of the obtained second comparative image is not equal to or greater than the reference difference value, turning off the second illumination unit, and if the difference value between the brightness of the obtained third comparative image and the brightness of the obtained fourth comparative image is less than the reference difference value, turning off the first illumination unit. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification