To visualize symmetry of a measurement target object.SOLUTION: A symmetry visualization device 100 comprises a first shape information acquisition unit 101 for acquiring measurement target object surface shape information including three-dimensional coordinate data of a measurement target object surface, a second shape information acquisition unit 104 for acquiring reflective symmetry information including reflective symmetry three-dimensional coordinate data having a mirror image relation with the three-dimensional coordinate data of the measurement target object surface with a sagittal plane of the three-dimensional coordinate data as a reference, a deviation distribution acquisition unit 105 for acquiring a deviation distribution from the reflective symmetry three-dimensional coordinate data for the three-dimensional coordinate data of the measurement target object surface and an output control unit 108 for outputting the deviation distribution.SELECTED DRAWING: Figure 1
展开▼