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1. (WO2018105112) WATER INTRUSION DETECTION SYSTEM AND METHOD

Pub. No.:    WO/2018/105112    International Application No.:    PCT/JP2016/086774
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 10 00:59:59 CET 2016
IPC: G01V 8/10
G08B 13/196
Applicants: HITACHI KOKUSAI ELECTRIC INC.
株式会社日立国際電気
Inventors: TOGASHI, Junichi
富樫 純一
ITO, Wataru
伊藤 渡
OKADA, Masaya
岡田 正也
IWANAGA, Kazunari
岩永 一成
FUJII, Miyuki
藤井 幸
Title: WATER INTRUSION DETECTION SYSTEM AND METHOD
Abstract:
This system detects an intruding object candidate from the video of a visible-light camera and far-infrared-light camera for monitoring the sea; derives, for example, size, speed, and intrusion direction and linearitie; and carries out some degree of object identification. Further, the system distinguishes between ships, humans, and floating matter on the basis of the luminance, and the like, in the far-infrared-light video. Additionally, the system subjects the video to, for example, Fourier transformation and observes the periodicity of normal waves on the sea at a location where there is no object. The system enhances the accuracy of object identification on the basis of the relationship between the movement of the waves in the normal state and the movement of an object.