Patent ID: 9418428
Filing Date: 2016-08-16
CPC Classification: G06T,H04N

Claim Text:
1. A position management device, comprising: a calculation unit that gives identification information of an object being monitored to the object being monitored cyclically imaged by an imaging device, and calculates positional information of the object being monitored from an image of the imaged object being monitored; a storage unit that associates the identification information of the object being monitored and an imaging time with the positional information, and stores the identification information, the imaging time and the positional information, which are associated with each other; and a comparison unit that compares, with respect to the object being monitored, an absolute value of a difference between a value of the positional information as of a current time and a value of the positional information as of each of the imaging times one cycle and two cycles prior to the current time, which are stored in the storage unit, with a predetermined reference value, and outputs the positional information as of the current time even if the absolute value of the difference for the imaging time one cycle prior to the current time is equal to or greater than the reference value, and if the absolute value of the difference for the imaging time two cycles prior to the current time is less than the reference value.