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Title:
SIGNAL DETECTOR
Document Type and Number:
Japanese Patent JP2020104667
Kind Code:
A
Abstract:
To provide a special signal detector which can precisely and firmly detect blinking action to be detected by suppressing affects of noises.SOLUTION: A noise removal part removes noise regions based on the detection of components in wavelength bands out of an object from a continuous image acquired by an imaging part 10. Even if there are affects of irregular fluctuations caused by noises, the affects are precisely removed by detecting blinking actions with specified periods based on frequencies of brilliance of the continuous image whose noise regions are removed and the presence of the blinking action of a special signal light emitter 200, that is, the presence of a signal to be detected can be precisely and firmly determined.SELECTED DRAWING: Figure 1

Inventors:
IWAGAMI AKIO
YAGI MAKOTO
MATSUDA KAZUYUKI
NIWA JUNICHI
Application Number:
JP2018244660A
Publication Date:
July 09, 2020
Filing Date:
December 27, 2018
Export Citation:
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Assignee:
NIPPON SIGNAL CO LTD
International Classes:
B61L25/06; B61L5/18; G06T7/00; H04N7/18
Domestic Patent References:
JPH10114267A1998-05-06
JP2009157492A2009-07-16
JP2016078528A2016-05-16
JP2016155481A2016-09-01
JP2002002485A2002-01-09
Attorney, Agent or Firm:
Mitsuhiro Fukuda
Kei Yamakawa



 
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