3d surveying instrument and electronic storage medium

The present invention relates to a three-dimensional surveying instrument used to calculate three-dimensional coordinate data by use of a surveying instrument and an imaging unit. An object of the present invention is in particular to provide a three-dimensional surveying instrument that determines positions of corresponding points by use of a surveying instrument, and that is capable of stereo displaying. €ƒ€ƒ€ƒ The three-dimensional surveying instrument according to the present invention is capable of: from positions of at least three reference points, which are measured by the surveying instrument, and from an image acquired by the imaging unit, calculating a tilt of the imaging unit, and the like; from a position of a collimation point measured by the surveying instrument, calculating a tilt of the imaging unit, and the like; with the collimation point being used as a corresponding point, performing matching of the image acquired by the imaging unit; associating the position of the collimation point measured by the surveying instrument with a collimation point on the image, the matching of which has been performed; and calculating three-dimensional coordinate data of the target to be measured on the basis of the association.