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|1. (WO2018105112) WATER INTRUSION DETECTION SYSTEM AND METHOD|
|Applicants:||HITACHI KOKUSAI ELECTRIC INC.
|Title:||WATER INTRUSION DETECTION SYSTEM AND METHOD|
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.