Abstract
In recent years, 3D printers have been widely spread for outputting geometries designed on 3DCG systems. However, it is sometimes difficult for general consumers to design their own objects with standard 3DCG software due to the complexity of its user interface. Furthermore, the models designed on 3DCG software often have geometrical problems to be printed out by a 3D printer. We propose a novel 3D modeling system with an air-spray like interface in AR (Augmented Reality). We further propose a new data structure called "pyramid voxel" for representing designed model so that the model is ensured as a completed solid. The target shapes are based on regular polyhedron, and our system is suitable for designing geometrical ornament. Finally, we conducted a user test. We confirmed that that the users can design their own ornaments in a short time with simple user interface intuitively. On the other hand, it is also clarified that there exist some issues we have to resolve about AR technology to improve the user interface.
