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Tangible interface for shape modeling by block assembly of wirelessly connected blocks
Jinwon Son,Hoik Jang,Young Choi 한국CDE학회 2019 Journal of computational design and engineering Vol.6 No.4
Tangible computer-aided design (CAD) that can generate and manipulate 3D models more efficiently than conventional modeling interfaces is a new interface technology between users and computers through tangible physical devices. Because the majority of tangible CAD systems use cameras or projec-tors, 3D models of complex structures with visual occlusion cannot be generated. In this work, we pro-pose and develop a system that allows users to create complex shapes by assembling wireless blocks. By allowing more freedom in the orientations of blocks, models created by the assembly operation can be used to generate true 3D shapes compared to the 2.5D shapes resulting from previous research. The phys-ical blocks of the proposed system include infrared proximity sensors, inertial magnetic units, Zigbee modules, and Arduino microcontrollers. The status of the block assembly is transmitted to the worksta-tion wirelessly by the Zigbee. The workstation collects the sensor data of the blocks and generates and renders 3D models of the physically assembled blocks. The concept of the proposed tangible CAD system can be used in various application areas where simple, easy-to-use shape modeling interfaces for creating models by assembling small blocks are sufficient. The education and gaming industries are good exam-ples of where this concept can be applied easily.
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이승진(Seungjin Lee),장호익(Hoik Jang),손진원(Jinwon Son),최영(Young Choi) (사)한국CDE학회 2016 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2016 No.동계
Three-dimensional models are extensively used in the wide area of applications including computer graphics, movies, animation, design and manufacturing. In most of the cases, we represent objects in real life or create the appearance of imaginary objects using 3D modeling tools in computer. In the process of modeling such objects, a certain level expertise for using 3D modeling program is required. Novice users including children would usually encounter difficulties in understanding, modeling and spatial recognition in three dimensions when they try to use such typical 3D modeling tools. In order to provide a simpler but rough interface to 3D modeling tools, we propose a method that enables 3D computer modeling by simply assembling various types of physical blocks. In our approach, proximity sensors are embedded in the blocks to detect assembly status of physical model. ZigBee technology is used for the communication between assembled objects and computer. In this study, we propose a system that supports multiple types of block and wireless communication.