FAR-INFRARED PEDESTRIAN DETECTION DEVICE
First Claim
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1. A far-infrared pedestrian detection device for detecting the position of a pedestrian from an image captured by a far-infrared image capture unit having sensitivity to far infrared rays, characterized in thatthe device comprises:
- a point-at-infinity detector that determines the position of a point at infinity in the image, based on the captured image; and
a pedestrian detection region setting unit that sets a detection region for detection of the position of the pedestrian, according to the position of the point at infinity,the point-at-infinity detector includes;
a contour detector that detects, in the image, contour constituent points at each of which a difference in pixel value between adjacent pixels is equal to or more than a predetermined value, and directions in which contours extend at the contour constituent points;
a specific contour component removal unit that removes a contour constituent point at which the contour extends in a horizontal or nearly horizontal direction, and a contour constituent point at which the contour extends in a vertical or nearly vertical direction, from the contour constituent points detected by the contour detector; and
a straight line detector that detects two straight lines on which the contour extends in directions that are a predetermined value or more away from each other, based on the positions of the contour constituent points that are not removed by the specific contour component removal unit and on the directions in which the contours extend at the contour constituent points, andthe point-at-infinity detector determines the position of the point at infinity, based on the detected two straight lines.
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Abstract
A far-infrared pedestrian detection device includes a point-at-infinity detector (30) that detects the position of a point at infinity from a captured far-infrared image (200), and a pedestrian detection region setting unit (40) that sets a pedestrian detection region in the captured far-infrared image (200) according to the detected position of the point at infinity, and the device detects a pedestrian within the pedestrian detection region.
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Citations
6 Claims
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1. A far-infrared pedestrian detection device for detecting the position of a pedestrian from an image captured by a far-infrared image capture unit having sensitivity to far infrared rays, characterized in that
the device comprises: -
a point-at-infinity detector that determines the position of a point at infinity in the image, based on the captured image; and a pedestrian detection region setting unit that sets a detection region for detection of the position of the pedestrian, according to the position of the point at infinity, the point-at-infinity detector includes; a contour detector that detects, in the image, contour constituent points at each of which a difference in pixel value between adjacent pixels is equal to or more than a predetermined value, and directions in which contours extend at the contour constituent points; a specific contour component removal unit that removes a contour constituent point at which the contour extends in a horizontal or nearly horizontal direction, and a contour constituent point at which the contour extends in a vertical or nearly vertical direction, from the contour constituent points detected by the contour detector; and a straight line detector that detects two straight lines on which the contour extends in directions that are a predetermined value or more away from each other, based on the positions of the contour constituent points that are not removed by the specific contour component removal unit and on the directions in which the contours extend at the contour constituent points, and the point-at-infinity detector determines the position of the point at infinity, based on the detected two straight lines. - View Dependent Claims (3, 4, 5, 6)
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2. (canceled)
Specification
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Current AssigneeClarion Co., Ltd. (Faurecia SA)
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Original AssigneeClarion Co., Ltd. (Faurecia SA)
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InventorsIshii, Katsuichi
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Application NumberUS13/503,466Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current348/148CPC Class CodesG06V 10/48 by mapping characteristic v...G06V 20/58 Recognition of moving objec...G06V 40/10 Human or animal bodies, e.g...G08G 1/166 for active traffic, e.g. mo...
