| 摘要 |
A monitoring system includes a camera section, a request unit and a state data generating unit. The camera section takes a predetermined area for a target person. The request unit issues a state data request to request a state data showing the state of the target person and shows the state data acquired in response to the state data request to the user. The state data generating unit provides the state data showing the presence/absence state of the target person in the predetermined area based on a first image and a second image in response to the state data request. The first image is taken by a camera section at a first time and the second image is taken by the camera section at a second time after the first time. <IMAGE>
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