Abstract:
PURPOSE: A camera simulation system and location sensing method using the same are provided to detect the location of a marker through a camera without additional equipment. CONSTITUTION: A recognition unit(120) recognizes the marker of a preset color in an image. A detection unit(130) extracts a parameter of the recognized marker of the recognition unit. The detection unit detects three dimensional position of the marker about a camera coordinate axis. A conversion unit(140) converts a detection result about the camera coordinate axis of the detection unit.
Abstract:
The present invention relates to a method and a device for the carving simulation of a deformed model, wherein the device includes a volume forming unit which forms a plurality of hexahedral structures which surround a deformed model, a calculation unit which calculates first distance values from the vertexes of the hexahedral structures to the deformed model and second distance values from the vertexes of the hexahedral structures to a cautery model in a predetermined range of a contact part when the cautery model comes in contact with the deformed model, and a mesh forming unit which re-forms the deformed model by forming the mesh of the deformed model mapped to the hexahedral structures using the calculated first distance values and updating the mesh of the deformed model according to the calculated second distance values. [Reference numerals] (101) Volume forming unit; (102) Calculation unit; (103) Mesh generation unit
Abstract:
본 발명은 고상중합을 이용하여 주쇄에 적어도 한 종류 이상의 방향족 디카르복실산과 한 종류 이상의 지방족 디아민을 포함하는 코폴리아마이드의 제조방법에 관한 것으로서, 특히 분자량이 매우 높은 반결정성 및 반방향족 코폴리아마이드를 짧은 시간 내 제조할 수 있는 코폴리아마이드의 제조방법에 관한 것으로서, 본 발명의 상대점도가 2.0 이상인 고분자 반결정성 및 반방향족 코폴리아마이드 제조방법은, (a) 방향족 디카르복실산 (aromatic dicarboxylic acid), 지방족 디카르복실산 (aromatic dicarboxylic acid) 및 지방족 디아민 (aliphatic diamine)을 포함하는 코폴리아마이드 예비중합물을 제조하는 단계 및 (b) 고상중합을 통하여 상기 코폴리아마이드 예비중합물의 분자량을 증가시키는 단계를 포함하는 것이다.
Abstract:
PURPOSE: A dynamic simulation method of a connection rigid body and a system thereof are provided to renew a part of a Jacobian matrix instead of calculating a new Jacobian matrix, which is required for an integration process of a dynamic equation, per time step, thereby reducing calculation complexity and performing calculation at high speed. CONSTITUTION: A first simulation module calculates a Jacobian matrix related to a dynamic equation of a connection rigid body. The first simulation module calculates a position and a speed vector of a second time step of the connection rigid body based on a position and a speed vector of a first time step of the connection rigid body. A second simulation module renews a part of the Jacobian matrix by using the position and the speed vector of the second time step(S4). The second simulation module calculates a position and a speed vector of a third time step of the connection rigid body by using the renewed Jacobian matrix(S5). [Reference numerals] (AA) Start; (BB) No; (CC) Yes; (DD) End; (S1) Calculate an acceleration vector by using a position/speed vector of a first time step; (S2) Calculate a Jacobian matrix by using the acceleration vector of the first step; (S3) Calculate a position/speed vector of a second time step by using the Jacobian matrix; (S4) Update a part of the Jacobian matrix; (S5) Calculate a position/speed vector of a next time step by using the updated Jacobian matrix; (S6) Last time step?
Abstract:
PURPOSE: A manufacturing method of semi-crystalline and semi-aromatic copolyamide is provided to improve reaction rate of chain extending reaction and to obtain semi-crystalline and semi-aromatic copolyamide with extremely high molecular weight within very short reaction time. CONSTITUTION: A manufacturing method of semi-crystalline and semi-aromatic copolyamide comprises: a step of preparing a copolyamide prepolymer comprising an aromatic dicarboxylic acid, aromatic dicarboxylic acid and aliphatic diamine; and a step of increasing the molecular weight of the copolyamide prepolymer through a solid polymerization. The relative viscosity of the copolyamide prepolymer is 1.05 or more. The aromatic dicarboxylic acid is at least one selected from terephthalic acid and isophthalic acid.
Abstract:
PURPOSE: A 3D tracking system of a surgical instrument, and a position detection method using the same are provided to sense a 3D coordinate and modification of an object. CONSTITUTION: A 3D tracking system(100) comprises a photographing part(110), a recognition part(120), an extracting part(130), and an operation part(140). The photographing part takes a photograph of an object as an image and offers the image to the 3D tracking system. The recognition part recognizes a marker attached to the object by binary-coding the image. The extracting part extracts a 2D coordinate of the marker. The extracting part designates a range determined as a similar region in the binary-coded image to a group. The operation part changes the 2D coordinate into a 3D coordinate by using internal parameter which is determined by a camera of the photographing part.
Abstract:
동적 디테일 수준(Dynamic Level of Detail; DLOD)을 적용한 직물 시뮬레이션(simulation) 시스템은, 직물상에 설정된 복수 개의 노드의 이전 시간 단계에서의 위치를 이용하여 상기 복수 개의 노드의 다음 시간 단계에서의 위치를 산출하는 시뮬레이션 모듈; 각 시간 단계에서, 상기 복수 개의 노드의 위치에 기초하여 상기 복수 개의 노드 각각의 곡률을 산출하고, 산출된 곡률에 기초하여 노드의 생성 및 삭제 중 하나 이상을 수행하는 노드 조절 모듈; 및 상기 노드 조절 모듈에 의해 노드의 생성 및 삭제 중 하나 이상이 수행된 후의 상기 복수 개의 노드 각각의 속도를 결정하는 속도 조절 모듈을 포함할 수 있다. 상기 직물 시뮬레이션 시스템에 의하면, 동적으로 노드를 추가 및/또는 삭제하면서 동시에 전체 노드의 운동 에너지가 보존되도록 함으로써 표현 대상 직물의 물리적 성질이 변화하는 것을 방지할 수 있다.