Hitachi-kokusai Electric Inc.

Naoki Saotome

Kei Takahashi

Masaru Fujii

Atsushi Honda

Shigeyuki Murata

Tomohiro Aikawa

Hirofumi Emi

In a monitoring system, each individual camera device divides image data acquired by an image sensor unit into a plurality of areas, and detects video-image abnormality from an average luminance signal value in each area or from a change thereof. The camera device that has detected video abnormality transmits video-image abnormality detection information to a server. In the plurality of areas, it is possible to use different detection algorithms such as a first algorithm in which it is determined that an abnormality has occurred when there is no change in the average luminance value, a second algorithm in which it is determined that an abnormality has occurred when there is a change in the average luminance value, and a third algorithm for observing a change in the video captured while a change is made to an aperture, exposure time, or the like.

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Tokyo, Japan

Naoki Saotome