DISTANCE CALCULATION APPARATUS, DISTANCE CALCULATION METHOD, DRIVING ASSIST APPARATUS, AND DRIVING ASSIST SYSTEM
First Claim
1. A distance calculation apparatus comprising:
- a reception unit configured to communicate with at least one object of another vehicle and infrastructure so as to receive object information comprising one or more of length information of the object and state information of the object;
a detection unit configured to detect a first length, as a length of the object, on a focal plane of a camera capturing the object; and
a calculation unit configured to calculate a second length as a length of the object relative to a focal plane axis, based on the length information and state information of the object, and to calculate a distance from the object, based on a focal plane distance, as a distance between a focus and the focal plane of the camera, and the first and second lengths.
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Accused Products
Abstract
Disclosed herein are a distance calculation apparatus, which includes a reception unit configured to communicate with at least one object of another vehicle and infrastructure so as to receive object information including one or more of length information of the object and state information of the object, a detection unit configured to detect a first length, as a length of the object, on a focal plane of a camera capturing the object, and a calculation unit configured to calculate a second length as a length of the object relative to a focal plane axis, based on the length information and state information of the object, and to calculate a distance from the object, based on a focal plane distance, as a distance between a focus and the focal plane of the camera, and the first and second lengths, and a driving assist apparatus using the same.
17 Citations
15 Claims
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1. A distance calculation apparatus comprising:
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a reception unit configured to communicate with at least one object of another vehicle and infrastructure so as to receive object information comprising one or more of length information of the object and state information of the object; a detection unit configured to detect a first length, as a length of the object, on a focal plane of a camera capturing the object; and a calculation unit configured to calculate a second length as a length of the object relative to a focal plane axis, based on the length information and state information of the object, and to calculate a distance from the object, based on a focal plane distance, as a distance between a focus and the focal plane of the camera, and the first and second lengths. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A driving assist apparatus comprising:
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a reception unit configured to communicate with at least one object of another vehicle and infrastructure so as to receive object information comprising one or more of length information of the object and state information of the object; a detection unit configured to detect a first length, as a length of the object, on a focal plane of a camera capturing the object; a calculation unit configured to calculate a second length as a length of the object relative to a focal plane axis, based on the length information and state information of the object, and to calculate a distance from the object, based on a focal plane distance, as a distance between a focus and the focal plane of the camera, and the first and second lengths; and one or more of an alarm provision device to provide an alarm based on the distance from the object, a speed controller to control a speed based on the distance from the object, and a steering controller to control a steering system based on the distance from the object. - View Dependent Claims (9, 10, 11)
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12. A driving assist system comprising:
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a reception unit configured to communicate with at least one object of another vehicle and infrastructure so as to receive object information comprising one or more of length information of the object, state information of the object, and GPS position information of the object by wireless vehicle communication (V2X); an image processing unit configured to perform one or more of first image processing for sensing only an ROI set based on the GPS position information and a second image processing for analyzing an edge of an image of the object captured by a camera to correct the image, so as to detect a first length, as a length of the object, on a focal plane of the camera, based on the obtained image; a storage unit configured to store one or more, of the object information and a focal plane distance as a distance between a focus and the focal plane of the camera, as data; a calculation unit configured to calculate a second length as a length of the object relative to a focal plane axis, based on the length information and state information of the object, to calculate a distance from the object based on the focal plane distance and the first and second lengths, and to calculate a TTC based on the distance from the object; and a transmission unit configured to transmit one or more of the distance from the object and the TTC to the other vehicle by wireless vehicle communication.
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13. A distance calculation method comprising:
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performing a reception process of communicating with at least one object of another vehicle and infrastructure so as to receive object information comprising one or more of length information of the object and state information of the object; performing a detection process of detecting a first length, as a length of the object, on a focal plane of a camera capturing the object; and performing a calculation process of calculating a second length as a length of the object relative to a focal plane axis, based on the length information and state information of the object, and of calculating a distance from the object, based on a focal plane distance, as a distance between a focus and the focal plane of the camera, and the first and second lengths. - View Dependent Claims (14, 15)
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Specification