Three-dimensional measurement device and measurement assistance processing method for same

In this three-dimensional measurement device, a measurement device body calculates the position and direction of a distance sensor. Further, the measurement device body determines a movement candidatethat is a candidate for the position and direction to which the distance sensor should be moved next. Additionally, the measurement device body acquires an intra-movement-candidate characteristic that is a characteristic at the movement candidate that can be observed by the distance sensor and uses the intra-movement-candidate characteristic to evaluate the stability of mapping at the movement candidate. The measurement device body presents a distance-sensor movement direction and/or movement speed to the user on the basis of the evaluation result. 在三维计测装置中，计测装置主体计算距离传感器的位置和方向。并且，计测装置主体决定下次应使距离传感器移动到的位置和方向的候选即移动候选。另外，计测装置主体取得在移动候选中能够由距离传感器观测的特征即移动候选内特征，使用移动候选内特征评价移动候选的映射的稳定性。进而，计测装置主体根据评价结果对使用者提示距离传感器的移动方向和移动速度中的至少任意方。