Driver monitoring apparatus, driver monitoring method, and program
First Claim
1. A driver monitoring apparatus comprising:
- a photographing means for taking a picture of a face of a driver;
an illumination means for emitting light to the face of the driver;
a light amount control means for controlling an amount of light to be emitted from the illumination means so that the amount of light becomes a first amount of light or a second amount of light;
a differential image creating means for comparing image information about one image on which the face of the driver to which the first amount of light was emitted is photographed with image information about another image on which the face of the driver to which the second amount of light was emitted is photographed and then creating a differential image from differential information about brightness of corresponding pixels;
a detecting means for detecting eyes of the driver from the differential image created by the differential image creating means; and
a state detecting means for detecting a state of the driver according to an image of the eyes of the driver.
2 Assignments
0 Petitions
Accused Products
Abstract
A driver monitoring apparatus has a photographing means for taking a picture of a driver'"'"'s face, an illumination means for emitting light to the driver'"'"'s face, a light amount control means for setting the amount of light from the illumination means to a first or second amount of light, a differential image creating means for comparing image information about one image on which the driver'"'"'s face to which the first amount of light was emitted is photographed with image information about another image on which the driver'"'"'s face to which the second amount of light was emitted is photographed and then creating a differential image from differential information about brightness of corresponding pixels, a detecting means for detecting the driver'"'"'s eyes from the differential image created by the differential image creating means, and a state detecting means for detecting the driver'"'"' state according to an image of the driver'"'"'s eyes.
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Citations
17 Claims
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1. A driver monitoring apparatus comprising:
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a photographing means for taking a picture of a face of a driver; an illumination means for emitting light to the face of the driver; a light amount control means for controlling an amount of light to be emitted from the illumination means so that the amount of light becomes a first amount of light or a second amount of light; a differential image creating means for comparing image information about one image on which the face of the driver to which the first amount of light was emitted is photographed with image information about another image on which the face of the driver to which the second amount of light was emitted is photographed and then creating a differential image from differential information about brightness of corresponding pixels; a detecting means for detecting eyes of the driver from the differential image created by the differential image creating means; and a state detecting means for detecting a state of the driver according to an image of the eyes of the driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A driver monitoring method comprising:
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a photographing step of taking a plurality of pictures of a face of a driver with different amounts of light emitted to the face of the driver; a differential image creating step of comparing image information about one image on which the face of the driver to which a first amount of light was emitted is photographed with image information about another image on which the face of the driver to which a second amount of light was emitted is photographed and then creating a differential image from differential information about brightness of corresponding pixels; a detecting step of detecting eyes of the driver from the differential image; and a state detecting step of detecting a state of the driver according to an image of the eyes of the driver. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A program that causes a computer to function as:
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a photographing means for taking a picture of a face of a driver; an illumination means for emitting light to the face of the driver; a light amount control means for controlling an amount of light to be emitted from the illumination means so that the amount of light becomes a first amount of light or a second amount of light; a differential image creating means for comparing image information about one image on which the face of the driver to which the first amount of light was emitted is photographed with image information about another image on which the face of the driver to which the second amount of light was emitted is photographed and then creating a differential image from differential information about brightness of corresponding pixels; a detecting means for detecting eyes of the driver from the differential image created by the differential image creating means; and a state detecting means for detecting a state of the driver according to an image of the eyes of the driver.
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Specification