POSITION DETECTION DEVICE AND POSITION DETECTION PROGRAM

摘要

A position detection device obtains image coordinate groups representing a coordinate of a target object in each acquired image having first and second acquired image groups. The first acquired image group has acquired images obtained at an image acquiring timing in a reference period. The second acquired image group has acquired images obtained at an image acquiring timing in the reference period, which is delayed from the image acquiring timing of the first acquired image group by an asynchronous time. The device performs a Fourier transformation of each of a first locus and a second locus, and calculates a first frequency waveform based on the first locus and a second frequency waveform based on the second locus. The device calculates a position of the target object based on a relationship in which the frequency waveforms are delayed relative to each other by a phase corresponding to the asynchronous time.

主权项

1. A position detection device capable of detecting a position of a target object in an acquired image on the basis of a plurality of acquired images, comprising:
an image coordinate group acquiring section configured to obtain an image coordinate group representing a coordinate of the target object in each of the acquired images, the acquired images forming a first acquired image group and a second acquired image group, the first acquired image group comprised of a plurality of acquired images which are acquired at an image acquiring timing in a reference period, the reference period representing a predetermined fixed period, the second acquired mage group acquired at an image acquiring timing in the reference period, the image acquiring timing of the second acquired image group being delayed from the image acquiring timing of the first acquired image group by an asynchronous time; and a position calculation section configured to calculate a position of the target object on the basis of each of the image coordinate groups and a relationship between the first acquired image group and the second acquired image group which have been acquired at a different timing delayed relative to each other by the asynchronous time.