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우혁제(Hyuckje Woo),이종대(Jongdae Lee) (사)한국CDE학회 2014 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2014 No.2
The industry-academy collaborative education through the school-based enterprise(SBE) means operating an entrepreneurial and educational program for the purpose of providing goods or services to the market and educating the students in the related fields at the same time. This SBE program has been started by a support of Ministry of Education since 2004 and now there are many school-based enterprises established and run by the related departments in Korea. This paper shows some examples of academy-industry cooperation and educational activities such as reflecting on the regular subjects, providing on-the-job-training and internship with the SBE that offers precision measurement and mechanical design services to various neighboring industries. In addition, the advantages and disadvantages of the SBE program in the field of CAD/CAM are discussed and some improvement directions are also suggested in this presentation.
셸 형상의 3차원 폐곡면상에서 추출된 점데이터군으로부터 중립곡면 계산에 관한 연구
우혁제(Hyuckje Woo) (사)한국CDE학회 2010 한국CDE학회 논문집 Vol.15 No.1
In this study, new medial surface calculation methods using Voronoi diagrams are investigated for the point samples extracted on closed surface models. The medial surface is defined by the closure of all points having more than one closest point on the shape boundary. It is a one of essential geometric information in 3D and can be used in many areas such as 3D shape analysis, dimension reduction, freeform shape deformation, image processing, computer vision, FEM analysis, etc. In industrial parts, the idealized solid parts and shell shapes including sharp edges and vertices are frequently used. Other medial surface extraction methods using Voronoi diagram have inherent separation and branch problems, so that they are not appropriate to the sharp edged objects and have difficulties to be applied to industrial parts. In addition, the branched surfaces on sharp edges in shell shapes should be eliminated to obtain representative medial shapes. In order to avoid separation and branch problems, the new approach by analyzing the shapes and specially sampling on surfaces has been developed.