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이주성(Jusung Lee),임정훈(Jeonghun Lim),백승엽(Stephen S. Beak),이건우(Kunwoo Lee) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
In Dental CAD, It is Important to extract exactly margin Line from teeth model. In particular, the teeth have a variety of structures of the scan data for each patient. There is a need for a method readily available to the margin line. Therefore, we developed the active contour model to generate on the mesh. The margin line extraction method requires a minimum of user interaction.
Initial closed curve for active contour model on mesh
JuSung Lee(이주성),JeongHun Lim(임정훈),Kunwoo Lee(이건우) (사)한국CDE학회 2015 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2015 No.동계
The accurate margin line extraction is a crucial process in computer-aided orthodontics. Margin line is boundary line of treatment region. Though curvature field is traditionally used for detect feature line, different shapes and scanning noises make hard to detect margin line automatically. Thus current dental CAD systems mostly require the user interactive definition of points by the user. So, we also use interactive defined starting points by the user. In medical image processing, active contour model is used to extract feature line. However it doesn’t work when initial curve is improper. To solve this problem, this paper proposes a novel closed curve initialization algorithm that makes initial curve on mesh by using starting points. Some experiments show our initialization method is robust and fast.