Title:
車載カメラの変位量検出装置
Document Type and Number:
Japanese Patent JP5616974
Kind Code:
B2
Abstract:
A displacement magnitude calculation device for a vehicle-mounted camera includes a reference value calculating unit 12 which divides, in an image taken by a vehicle-mounted camera 20, a region for measurement Ea into a plurality of measurement unit regions D0 to DN, calculates an average of a luminance value of pixels inside each measurement unit region as reference values re(0,t), re(1,t), ..., re(N,1) of each measurement unit region, and sets a luminance vector VEC(t) indicating a distribution manner in a vertical direction of each reference value, and a camera displacement magnitude calculating unit 13 which calculates a degree of correlation between a luminance vector VEC(t 1 ) of an image taken at t 1 and a luminance vector VEC(t 2 ) of an image taken at t 2 by shifting the vertical luminance vector VEC(t 2 ) in a vertical direction (y direction), and obtains the displacement magnitude of the camera 20 from t 1 to t 2 , on the basis of a shift amount in which the degree of correlation became the highest.
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Inventors:
森 直樹
Application Number:
JP2012544203A
Publication Date:
October 29, 2014
Filing Date:
November 09, 2011
Export Citation:
Assignee:
本田技研工業株式会社
International Classes:
H04N5/225; G06T1/00; H04N5/232
Domestic Patent References:
| JP2002112252A | 2002-04-12 | |||
| JPH03268112A | 1991-11-28 | |||
| JPH0923419A | 1997-01-21 | |||
| JP2002112252A | 2002-04-12 | |||
| JPH09161060A | 1997-06-20 |
Attorney, Agent or Firm:
Patent business corporation creation international patent firm