| 摘要 |
A method for counting a number of objects passing through an entry threshold, comprising the steps of disposing a sensor (11) having a matrix of sensing points in an area of the entry threshold, identifying successive complete footprints of the same object on the sensor, and distinguishing between different footprints using clustering. The method is used in association with a pressure mat disposed at the entry threshold and tracks the progress of the object across the mat. Specifically, when a footprint vanishes from the mat, retroactive processing is effected in respect of the body associated with that footprint so that other footprints belonging to the same body may be ignored. The number of footprints thus associated with the body and which are not ignored serves as a counter of the number of bodies crossing the entry threshold.
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