| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that accuracy of anomaly determination is reduced by inaccurate positional relationship between a sensed area by an image sensor and that by a human body sensor which sets a part of monitored space as sensed space, in a composite-type sensor that includes both sensors and senses an invasion anomaly by determining a result of sensing by the sensors in an integrated manner. <P>SOLUTION: A composite-type sensor executes: a step for conducting a walk test within monitored space to measure a characteristic 150 of a sensing signal level of a human body sensor corresponding to a human image position within an image; a step for using the characteristic 150 to extract a sensed position distribution range Ro that contains the human image position for which a sensing signal is equal to or greater than a reference level Z1 of human body sensing; a step for setting an allowable level Z2 of human body sensing, which is lower than Z1; a step for obtaining a correction distribution range Re resulting from correction to expand the range Ro so as to contain the human image position which is present within a range of distance B on both sides of the range Ro and for which the sensing signal level is equivalent to or greater than Z2; a step for setting a composite sensed area which is a sensed area shared between the human body sensor and the image sensor so as to center the range Re; and a step for specifying a remaining image as an area solely sensed by the image sensor. <P>COPYRIGHT: (C)2012,JPO&INPIT |
