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비등방성 확산 필터링된 영상 슬라이스들의 볼륨 렌더링에 관한 연구
신문걸,김태형,박용기,김두영 동아대학교 정보기술연구소 2001 情報通信硏究所論文誌 Vol.9 No.1
The goals of this paper are not only to reduce of noise using anisotropic diffusion filter post-processing but also to represent 3-D image using 2-D image slices by volume rendering. A 3D shape image can be obtained as the 2-D images are continuously acquired, during the object is removed noise by filtering. The 3-D shape images are displayed on computer monitor by use of OpenGL Software.
구조 응력 기법을 적용한 필릿 용접부 두께 지수 산정에 관한 연구
신문걸,오동진,김명현,Xin, Wen-Jie,Oh, Dong-Jin,Kim, Myung-Hyun 대한용접접합학회 2014 대한용접·접합학회지 Vol.32 No.2
In this study, non-load-carrying fillet welded joints fabricated using EH grade-steel are evaluated with the structural stress approach. The thickness effect was investigated by a study on welded steel joints with thickness ranging from 25 to 80mm. As-welded joint for main plate thickness of 25 to 80mm, the fatigue strength is reduced gradually. On the other hand, in case of main plate thickness of 25 to 80mm, the structural stress concentration factor increases gradually. As a result, for structural stress approach, thickness effect is not required for correction. Based on these results, a new evaluation fillet welded joint for fatigue design purposes has been proposed FAT 125.
김성곤,신문걸,김두영 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1
Shape modeling is an important part of computer vision. Shape models help the tasks of object representation and recognition. In this paper, curve evolution and level set algorithms are used for extracting a shape within an image. This method is based on the ideas developed by Osher and Sethian to model propagating solid/liquid interfaces moving with curvature-dependent speeds. We propose the new generalized formulation and stopping function of evolution for more accurate extraction of shape. Our method canbe applied to model arbitrarily complex shapes and has the ability to dynamically sense the topological changes of the shape during the shape recovery process.