Title:
TRAFFIC LIGHT DETECTION DEVICE AND TRAFFIC LIGHT DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/136602
Kind Code:
A1
Abstract:
A traffic light detection device is provided with an imaging unit (11) that acquires an image by imaging in a direction of travel of a vehicle, and a traffic light detection unit (12) that detects a traffic light from the image. The traffic light detection unit (12) sets reference signals (L01 to L03) the number of which is a multiple of three and the phases of which are shifted by a time obtained by dividing the period of alternating-current electric power supplied to the traffic light by a multiple of three. The phase of the reference signal (L01) closest to the phase of the alternating-current electric power is aligned with the phase of the alternating-current electric power. From the image, the traffic light detection unit (12) extracts synchronized pixels (53b) of which the brightness changes in synchronism with the reference signal (L01) aligned with the phase of the alternating-current electric power, and determines that the traffic light is present at the position of the synchronized pixels.
Inventors:
OKI TAKAHIKO (JP)
NISHIUCHI HIDEKAZU (JP)
NISHIUCHI HIDEKAZU (JP)
Application Number:
PCT/JP2014/056196
Publication Date:
September 17, 2015
Filing Date:
March 10, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
G08G1/16
Foreign References:
| JP2008134916A | 2008-06-12 | |||
| JP2008293277A | 2008-12-04 | |||
| JP2007286943A | 2007-11-01 |
Other References:
See also references of EP 3118832A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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