发明名称 |
Inter-vehicle distance detecting device |
摘要 |
An inter-vehicle distance detecting device comprising: a pair of image sensors on which an image of an object in front of a driving car is formed by a pair of optical systems; an image display means for displaying a first image information taken by one of the pair of image sensors; a window setting means for setting a plurality of windows partitioning a region of the image on the first image information; a distance detecting means for calculating respective distances from the driving car to the object surrounded by the respective windows by comparing a second image information in the respective windows set by the window setting means with a third image information taken by the other of the pair of image sensors corresponding to the second image information and by detecting a shift between the second image information and the third image information; a determining means for determining the object for measurement based on the distances to the respective windows provided by the distance detecting means; a gate setting means for setting a gate partitioning the region such that the gate approximately surrounds the object for measurement based on the distances corresponding to the object for measurement; a symmetry determining means for determining symmetry of a fourth image information surrounded by the gate and selected from the first image information and for obtaining a position of a symmetry line; and a predicting means for predicting the presence of a preceding car in front of the driving car by determining a first stability of a movement of the symmetry line provided by the symmetry determining means in the horizontal direction and by determining a second stability of the distances provided by a calculation result of the distance determining means over time.
|
申请公布号 |
US5321488(A) |
申请公布日期 |
1994.06.14 |
申请号 |
US19930014146 |
申请日期 |
1993.02.05 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
IRIE, TATSUJI |
分类号 |
G08G1/16;B60W30/00;G01S11/12;(IPC1-7):G01C3/00;B60T7/16;H04N7/18 |
主分类号 |
G08G1/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|