Title:
測距装置
Document Type and Number:
Japanese Patent JP4127808
Kind Code:
B2
Abstract:
A rangefinder apparatus includes an effective minimum value certifying unit for comparing a minimum value, exhibiting the smallest value in correlation values calculated for the each rangefinding area, with a reference value for a degree of correlation and certifying a minimum value smaller than the reference value as an effective minimum value, effective for a rangefinding calculation, a distance calculating unit for calculating the distance to the object according to the effective minimum value certified for each rangefinding area; and a correlation calculation restricting unit for omitting the correlation calculation within a specific distance range, farther by at least a predetermined amount than the shortest distance calculated according to the effective minimum value in the correlation calculation for a rangefinding area to be later subjected to the correlation calculation, when the effective minimum value exists in the rangefinding area earlier subjected to the correlation calculation.
Inventors:
Kiichi Mihara
Hideo Yoshida
Hideo Yoshida
Application Number:
JP2003278553A
Publication Date:
July 30, 2008
Filing Date:
July 23, 2003
Export Citation:
Assignee:
Fujinon Co., Ltd.
International Classes:
G01C3/06; G02B7/28; G02B7/30; G02B7/34; G03B13/00; G03B13/36
Domestic Patent References:
| JP2002311327A | ||||
| JP62148911A | ||||
| JP3033708A | ||||
| JP62150310A | ||||
| JP2001184497A | ||||
| JP2001160144A | ||||
| JP11051647A | ||||
| JP8075995A | ||||
| JP7120256A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Hikaru Suzuki
Tatsuya Shioda
Shiro Terasaki
Hikaru Suzuki