FIELD: physics.
SUBSTANCE: imaging device records an object image taken by the image forming device on the recording medium as image data, includes a display that displays the image data, and a selection node that selects the predetermined image data from the recording medium. The display shows the image corresponding to the image data selected by the selection node and the object image, when tracking.
EFFECT: ensuring imaging devices, allowing easy comparison of the recorded images and the object images, when tracking.
8 cl, 12 dwg
