Device for detecting object in front of vehicle
First Claim
1. A device for detecting an object located in front of an automobile, the detecting device comprising:
- a radar for detecting a distance to an object located in front of the automobile;
means for taking a front image including an image of the object;
means for memorizing the distance detected by the radar and the front image taken by the taking means, the distance and the front image being memorized as a pair;
means for judging whether the front object is in a radar range; and
means for calculating the distance to the object, when the front object is not in the radar range and the taking means is taking the image of the object, based on the memorized distance and a ration of an object size in the memorized front image to an object size in a present front image.
1 Assignment
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Accused Products
Abstract
A device including a radar and a camera for detecting an object located in front of an automobile is mounted on the automobile. The radar detects a distance from the automobile to the front object, and the camera takes an image of the object. When the object such as a preceding vehicle moves out of a region detectable by the radar while remaining in a region covered by the camera, a present distance to the object is calculated based on the distance previously detected by the radar and memorized in a memory and a present object image taken by the camera. More particularly, the present distance is calculated by multiplying the memorized distance by a ratio of an object size in the memorized image to an object size in the present image.
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Citations
10 Claims
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1. A device for detecting an object located in front of an automobile, the detecting device comprising:
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a radar for detecting a distance to an object located in front of the automobile; means for taking a front image including an image of the object; means for memorizing the distance detected by the radar and the front image taken by the taking means, the distance and the front image being memorized as a pair; means for judging whether the front object is in a radar range; and means for calculating the distance to the object, when the front object is not in the radar range and the taking means is taking the image of the object, based on the memorized distance and a ration of an object size in the memorized front image to an object size in a present front image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification