Vehicle periphery monitor device
First Claim
1. A vehicle periphery monitoring apparatus for monitoring pedestrians in periphery of a vehicle based on an image captured by an infrared camera that is mounted on the vehicle, comprising:
- a head candidate extractor for extracting at least two head candidates, which are spaced apart from each other in a substantially horizontal direction, from the image;
a reference image generator for generating a peripheral image including one of the extracted at least two head candidates as a reference image; and
a target object determiner, which uses a peripheral image including another of the head candidates as a comparison image, determining a degree of horizontal symmetry between the comparison image including the another of the at least two head candidates and the reference image including the one of the at least two head candidates and judging whether the at least two head candidates represent pedestrians or a vehicle based on the degree of horizontal symmetry between the comparison image and the reference image, andwherein the reference image generator generates the reference image in such a manner that another feature is included in the peripheral image in addition to the one of the extracted at least two head candidates.
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Abstract
Provided is a vehicle periphery monitor device for accurately distinguishing between and detecting two side-by-side pedestrians and a vehicle that is lighting lights. With regard to a pedestrian candidate having at least two head candidates, a reference image creation unit creates the peripheral image of one of the head candidates as a reference image and creates an inverted image in which the right and left sides of the reference image are inverted. An object determination unit sets the peripheral image of the other heat candidate as a comparative image, and determines whether the head candidates are the pedestrians or the vehicle on the basis of the consistency of the reference image and the inverted image relative to the comparative image.
34 Citations
6 Claims
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1. A vehicle periphery monitoring apparatus for monitoring pedestrians in periphery of a vehicle based on an image captured by an infrared camera that is mounted on the vehicle, comprising:
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a head candidate extractor for extracting at least two head candidates, which are spaced apart from each other in a substantially horizontal direction, from the image; a reference image generator for generating a peripheral image including one of the extracted at least two head candidates as a reference image; and a target object determiner, which uses a peripheral image including another of the head candidates as a comparison image, determining a degree of horizontal symmetry between the comparison image including the another of the at least two head candidates and the reference image including the one of the at least two head candidates and judging whether the at least two head candidates represent pedestrians or a vehicle based on the degree of horizontal symmetry between the comparison image and the reference image, and wherein the reference image generator generates the reference image in such a manner that another feature is included in the peripheral image in addition to the one of the extracted at least two head candidates. - View Dependent Claims (2, 3, 4, 5)
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6. A vehicle periphery monitoring method of monitoring pedestrians in periphery of a vehicle based on an image captured by an infrared camera that is mounted on the vehicle, comprising steps of:
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(i) extracting, by using a computer, at least two head candidates, which are spaced apart from each other in a substantially horizontal direction, from the image; (ii) generating, by using a computer, a peripheral image including one of the extracted at least two head candidates as a reference image; and (iii) determining, by using a computer, by using a peripheral image including another of the head candidates as a comparison image, a degree of horizontal symmetry between the comparison image including the another of the at least two head candidates and the reference image including the one of the at least two head candidates and judging whether the at least two head candidates represent pedestrians or a vehicle based on the degree of horizontal symmetry between the comparison image and the reference image, and wherein the step (ii) generates the reference image in such a manner that another feature is included in the peripheral image in addition to the one of the extracted at least two head candidates.
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Specification