| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an access controller capable of certainly detecting follow-up, inviting-in, and inviting-out in addition to tailgating to cope with unauthorized access. <P>SOLUTION: A passage person count means 43 of an image monitoring means 4 decides a person who enters/exits from an advance direction of a person M to an entrance E extracted from an image of an imaging means 40 imaging an outdoor prescribed area near the entrance E of a room R, and counts the number of the persons simultaneously and sequentially passing the entrance E. An alarm output means 5 operates when a count result of the passage person count means 43 is a plural number to give an alarm that the unauthenticated access occurs. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
