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Vehicle-to-vehicle distance calculation apparatus and method

A calculation device and distance technology, applied in the field of vehicle-to-vehicle distance calculation devices, can solve problems such as long time spent, complex system research and development costs, and inability to calculate distance, etc., to achieve the effect of simple detection

Active Publication Date: 2014-09-03
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since it is necessary to detect the shadow position of the vehicle driving ahead in Patent Document 1, the system is complicated and the development cost is high
Also, there are cases where calculating the distance takes too long
Also, there are cases where the distance cannot be calculated because it is difficult to detect shadows at night or on snow-covered roads, etc.
Furthermore, in both Patent Documents 1 and 2, no consideration is given to calculating the vehicle-to-vehicle distance in a relatively simple and accurate manner

Method used

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  • Vehicle-to-vehicle distance calculation apparatus and method
  • Vehicle-to-vehicle distance calculation apparatus and method
  • Vehicle-to-vehicle distance calculation apparatus and method

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 A side view showing the relationship between its own vehicle 2 and the target vehicle 1 traveling in front of the vehicle 2 .

[0021] Its own vehicle (motor vehicle) 2 is traveling on the road 3 and a target vehicle (motor vehicle) 1 is traveling in front of its own vehicle 2 , the vehicle-to-vehicle distance d of the target vehicle 1 is to be calculated.

[0022] The camera 10 is installed in its own vehicle 2 at the front end near the roof of the vehicle. Objects in front of own vehicle 2 are imaged by camera 10 . The camera 10 is installed at a height h from the road 3 . Based on the image captured by the camera 10 , the vehicle-to-vehicle distance d from its own vehicle 2 to the target vehicle 1 is calculated. The length obtained by subtracting the hood length Δd of the own vehicle 2 from the distance from the camera 10 to the target vehicle 1 is the vehicle-to-vehicle distance d from the own vehicle 2 to the target vehicle 1 .

[0023] figure 2 is a...

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Abstract

The distance between vehicles is calculated in a comparatively simple and accurate manner. To achieve this, a target vehicle traveling ahead of one's own vehicle is imaged by a camera mounted one one's own vehicle. The image of the target vehicle is detected from the captured image. The position of a vanishing point and the position of a lower edge of the image representing the target image are detected from the captured image. The distance to the target vehicle is calculated based upon the detected positions.

Description

technical field [0001] The invention relates to a vehicle-to-vehicle distance calculation device and method. Background technique [0002] In order to prevent vehicle accidents, it is important to calculate the vehicle-to-vehicle distance. In order to achieve this goal, there is a system that detects the shadow of a vehicle traveling ahead of its own vehicle, and calculates a car-to-vehicle distance using the position and vanishing point of the shadow (Patent Document 1). In addition, there are systems that detect obstacles by using a vanishing point (Patent Document 2), and systems that detect whether an object is a moving subject by using a vanishing point (Patent Document 3). [0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-327635 [0004] [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-199932 [0005] [Patent Document 3] Japanese Patent Application Laid-Open No. 2006-48338 [0006] However, since it is necessary to detect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C3/00
CPCB60R2300/307G06K9/00791B60R2300/804G06T7/0085B60R2300/302B60R1/00B60R11/04B60R1/24G06T7/60G06T2207/30261G06T7/13G06V20/584G06V20/56
Inventor 野中俊一郎松井优子
Owner FUJIFILM CORP