| 摘要 |
An operation determining system includes: a position measuring unit that measures a position of a moving object with time; and an operation determining unit that determines that there is an operation of the object in a detection area when an intersecting angle between entering and exiting vectors of the object with respect to the detection area, the intersecting angle being calculated based on the position of the object measured by the position measuring unit, is equal to or higher than a certain value.
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