Patent attributes
An image measurement device acquires a first measurement region and a second measurement region on an image, acquires distance information corresponding to the first measurement region and distance information corresponding to the second measurement region, and computes a distance between the two regions. In a case where the first measurement region is displaced on the image, the second measurement region is displaced on a contour or a plane on the image, and a distance between the first measurement region after the displacement and the second measurement region after the displacement is computed. Thereby, distance measurement is able to be performed over a wide range without a complicated operation in the image measurement device for measuring a distance between two regions by using an image.