Position data interpolation method, position detecting sensor and position measuring device

A position detecting sensor, comprising a GPS position detecting device, at least one image pickup device for continuously taking digital images, and an azimuth sensor for detecting an image pickup direction of said image pickup device, wherein at least position measurement data by said GPS position detecting device and the image at the time of position measurement can be synchronized and output.

A position measuring device, comprising a GPS position detecting device, at least one image pickup device for continuously taking digital images, an azimuth sensor for detecting an image pickup direction of said image pickup device, and a measuring device main unit, wherein said GPS position detecting device measures position data of a first point and of a second point, said image pickup device continuously takes digital images of scenes in the surrounding in a process of moving from a first point, which is a known point, via a second point, which is a known point, to a third point, which is an unknown point, and wherein said measuring device main unit generates tracking points from the image obtained at the first point, sequentially specifies the tracking points through the pursuit of points generated on the continuously acquired images, calculates 3-dimensional data of the tracking points of the images acquired at the first point and the image acquired at the second point based on position data of the first point and the second point, and calculates position data of the third point based on the position data of the tracking points.