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Patent Searching and Data


Title:
LOCAL LOCATION COMPUTATION DEVICE AND LOCAL LOCATION COMPUTATION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/125300
Kind Code:
A1
Abstract:
Provided is a local location computation device, comprising: a light projector (11) which projects a light pattern upon a road surface in the vicinity of a vehicle; an image capture unit (12) which is mounted upon the vehicle, and which captures an image of the road surface in the vicinity of the vehicle including a region whereupon the light pattern is projected, acquiring an image; an attitude angle computation unit (22) which computes an attitude angle of the vehicle with respect to the road surface from a location of the light pattern in the image which is acquired with the image capture unit (12); a feature point detection unit (23) which sets, from the image which is acquired with the image capture unit (12), a feature point detection region in the vicinity of the region whereupon the light pattern is projected, and detects a plurality of feature points upon the road surface in the said feature point detection region; an attitude change degree computation unit (24) which computes an attitude change degree of the vehicle on the basis of a change over time of the plurality of feature points upon the road surface; and a local location computation unit (25) which computes a present location and attitude angle of the vehicle by adding the attitude change degree to an initial location and attitude angle of the vehicle with respect to the road surface.

Inventors:
YAMAGUCHI ICHIRO (JP)
NISHIUCHI HIDEKAZU (JP)
Application Number:
PCT/JP2014/054316
Publication Date:
August 27, 2015
Filing Date:
February 24, 2014
Export Citation:
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Assignee:
NISSAN MOTOR (JP)
International Classes:
G08G1/16; G01C21/28
Domestic Patent References:
WO2012172870A12012-12-20
Foreign References:
JP2013147114A2013-08-01
JP2007256090A2007-10-04
JPH06325298A1994-11-25
JP2013187862A2013-09-19
JP2010101683A2010-05-06
Other References:
See also references of EP 3113149A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
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