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Title:
BRIGHTNESS CONTROLLER
Document Type and Number:
Japanese Patent JP2015170298
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a brightness controller capable of precisely controlling imaging brightness.SOLUTION: The brightness controller includes an imaging section, an illuminance acquisition section, a brightness acquisition section, a determination section and a control section. The imaging section takes an image of a road. The illuminance acquisition section acquires the illuminance adjacent to the road. The brightness acquisition section acquires the brightness on the road surface on the basis of the image. The determination section determines either one of the brightness or the illuminance on the road surface the variation of which is smaller as a factor for controlling the imaging brightness on the imaging section. The control section controls the imaging brightness on the imaging section on the basis of the value of the factor determined by the determination section.

Inventors:
HASHITANI SEIICHI
Application Number:
JP2014046793A
Publication Date:
September 28, 2015
Filing Date:
March 10, 2014
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
G08G1/04; G03B7/08; G03B15/00; G06K9/20; G06T1/00; G08G1/017; H04N5/238
Domestic Patent References:
JP2009212810A2009-09-17
JP2001202591A2001-07-27
JP2013171452A2013-09-02
JPH10162287A1998-06-19
JP2011242982A2011-12-01
JP2015049616A2015-03-16
Foreign References:
US5963253A1999-10-05
Attorney, Agent or Firm:
Shiga International Patent Office