Title:
撮像ユニットの露光制御装置
Document Type and Number:
Japanese Patent JP5898535
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To correctly recognize the colors of an object that emit light of variety of luminance, by exerting control such that an amount of exposure of an imaging unit mounted in a vehicle is equal to an optimum amount of exposure in accordance with a running environment.SOLUTION: If the maximum luminance of an R component does not exceed a threshold Hr1 after the recognition of a red signal, an exposure time is lengthened until the ratio of a G component to the R component reaches the maximum ratio at which red can be recognized (S13). If the maximum luminance of the R component does not exceed a threshold Hr2 after the recognition of a yellow signal, an exposure time is lengthened until the ratio of the R component to the G component reaches the ratio at which yellow can be recognized (S17). If the maximum luminance of the G component does not exceed a threshold Hgr after the recognition of a green signal, exposure time is lengthened until the ratio of the R component to the G component and a B component reaches the maximum ratio at which green can be recognized (S20). On the other hand, if they exceed their respective thresholds, exposure time is shortened (S14, S18, and S21). Thus, the colors of an object that emits light of a variety of luminance can be correctly recognized.
Inventors:
Ryo Nakagawa
Application Number:
JP2012056241A
Publication Date:
April 06, 2016
Filing Date:
March 13, 2012
Export Citation:
Assignee:
Fuji Heavy Industries Ltd.
International Classes:
H04N5/238; G03B7/091; G03B15/00; H04N5/225; H04N5/232
Domestic Patent References:
| JP2007028279A | ||||
| JP2000069490A |
Attorney, Agent or Firm:
Susumu Ito