3D Visualization and Outreach of Subsurface Geological Information Using Multi-layered Miniature Produced by 3D Plotter and Projection Mapping

Abstract

In recent years, people can access topographical and geological information rapidly and easily with the help of information technologies. However, it is difficult to recognize three dimensional distribution of topographical and geological structure from non-three-dimension maps. To improve the situation, Shibahara established several techniques of building up finely-detailed 3D objects. They are molded terrain miniatures produced by rapid prototyping and projection mapping calibration techniques. Each miniature has extremely small contours on the surface, and these contours are used as markers for the calibration of projection mapping. After the calibration, several raster images such as topographical map, geological map and bedrock distributions are also projected. These miniatures can be used for outreach and research activities in museums, schools, geoparks, etc.

Furthermore, Shibahara have developed multilayered 3D miniatures in order to visualize subsurface geological information．To build up this model, a number of geological datasets, such as borehole datasets, 3D subsurface structure model published by Geological Survey of Japan（GSJ）are used for modeling interior structure of the miniature.

These miniatures can be used not only for display but also for palpation（i.e., touch observation） of structures by visitors. Palpation is particularly suitable for visually impaired users.

We also have operation examples of these miniatures coupled with GIS, and some other visualization techniques.