Title:
SURVEILLANCE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/171068
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a surveillance system capable of more accurately detecting dangerous events at railroad crossings. The surveillance system comprises an imaging device and an analysis device. The analysis device includes a state analysis control unit and a state analysis unit. When detecting the approach of a train by analyzing an image acquired by the imaging device or on the basis of information notified from a state notification unit, the state analysis control unit instructs the state analysis unit to start analyzing the image within the railroad crossing. The state analysis unit uses the image acquired by the imaging device to detect and track a moving object within the railroad crossing. When it is determined by using at least a current moving speed of the moving object that a detection target cannot reach a set virtual line until the blocking of the railroad crossing is completed, the state analysis unit determines that a dangerous event occurs, and performs alarm processing.
Inventors:
HASEGAWA KEIGO (JP)
OBONAI YUSUKE (JP)
OBONAI YUSUKE (JP)
Application Number:
PCT/JP2022/045759
Publication Date:
September 14, 2023
Filing Date:
December 13, 2022
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H04N7/18; G06T7/00; G06V20/54; G08B25/00; G08B25/04
Domestic Patent References:
| WO2018084191A1 | 2018-05-11 |
Foreign References:
| JP2015182556A | 2015-10-22 | |||
| JP2010181614A | 2010-08-19 | |||
| JP2006111177A | 2006-04-27 | |||
| JP2006118914A | 2006-05-11 | |||
| JP2015070401A | 2015-04-13 | |||
| JP2021064398A | 2021-04-22 |
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