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Implementation of one combined dental scan software by easy control
Yonghee Hahm(함용희),Sungjae Jang(장성제),Kunwoo Lee(이건우) (사)한국CDE학회 2016 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2016 No.동계
In recent days, techniques for capturing a 3D model have been developed in different industries. Among different techniques and methods, we focused a technic in dental industry for boosting up time computation of the image scanning and image processing. The process of 3D scanning can be divided into three steps: creating 3d point cloud from a stereo camera using structured light, align the 3D point clouds to reconstruct 3D mesh forms, and merging reconstructed meshes into one 3D mesh. In the previous method, the total cost of computation was 25 seconds after the image is captured, which was not satisfied. Our aiming time consumption is 2 seconds after image is captured. To accomplish the goal, our approach exploits the concept of general purpose computation on graphics processing units and multi-threading system in each step. Our approach used CUDA(compute unified device architecture developed by NVIDA) that can be easily programmed due to it is based on C and boost library to do multi-thread. Therefore computational times using GPU and multi thread CPU shows about 15 times faster than implementation using only CPU.