US 12,257,122 B2
Method of generating three dimensional model using virtual bridge based multi input Boolean operation
Youngjun Kim, Seoul (KR); Tae-geun Son, Seoul (KR); Jinhyeok Choi, Seoul (KR); and Taeseok Lee, Seongnam-si (KR)
Assigned to IMAGOWORKS INC., Seoul (KR)
Filed by IMAGOWORKS INC., Seoul (KR)
Filed on May 25, 2021, as Appl. No. 17/330,361.
Claims priority of application No. 10-2020-0157014 (KR), filed on Nov. 20, 2020; and application No. PCT/KR2020/018845 (WO), filed on Dec. 22, 2020.
Prior Publication US 2022/0160477 A1, May 26, 2022
Int. Cl. A61C 7/00 (2006.01); A61C 13/00 (2006.01); B29C 64/386 (2017.01); G06F 30/20 (2020.01); G09B 23/30 (2006.01)
CPC A61C 7/002 (2013.01) [G06F 30/20 (2020.01); G09B 23/30 (2013.01); A61C 13/0004 (2013.01); B29C 64/386 (2017.08)] 20 Claims
OG exemplary drawing
 
1. A method of generating a three dimensional (3D) model for digital dentistry using a virtual bridge based multi input Boolean operation, the method comprising:
generating a first group model by generating a first virtual bridge connecting models spaced apart from each other among first input models of a first input group when the models are spaced apart from each other among the first input models;
generating a second group model by generating a second virtual bridge connecting models spaced apart from each other among second input models of a second input group when the models are spaced apart from each other among the second input models;
generating a first result model by a Boolean operation of the first group model and the second group model; and
removing a remaining first virtual bridge or a remaining second virtual bridge when the first virtual bridge or the second virtual bridge remains in the first result model,
wherein generating the first virtual bridge comprises:
calculating all combinations of closest points between the models spaced apart from each other among the first input models and spaced distances between the closest points between the models spaced apart from each other among the first input models.