公开(公告)号：US08269771B2

公开(公告)日：2012-09-18

申请号：US12314784

申请日：2008-12-16

申请人： Seung Taik Oh ,  Man Jai Lee ,  Bon Ki Koo ,  Soon Hyoung Pyo ,  Young Hee Kim ,  Seung Hyup Shin ,  Jang Hee Kim ,  Byung Seok Roh

发明人： Seung Taik Oh ,  Man Jai Lee ,  Bon Ki Koo ,  Soon Hyoung Pyo ,  Young Hee Kim ,  Seung Hyup Shin ,  Jang Hee Kim ,  Byung Seok Roh

IPC分类号： G06T15/00

CPC分类号： G06T17/20 ,  G06T17/205

摘要： A three-dimensional (3D) remeshing apparatus includes a curved surface geometry module for calculating one or more geometric elements, including a normal and a curvature, based on data of an input mesh, a vertex grouping module for grouping vertices of the mesh into a general group, an edge group, and an apex group using information of the curvature calculated by the curved surface geometry module, and a projection module for searching for one or more tangent planes corresponding to one or more of the vertices grouped by the vertex grouping module, projecting one or more corresponding vertices on each of the tangent planes, and restoring one or more edges of the input mesh.

摘要翻译： 三维（3D）重新镶嵌装置包括：曲面几何模块，用于基于输入网格的数据计算包括正常和曲率的一个或多个几何元素;顶点分组模块，用于将网格的顶点分成 使用由曲面几何模块计算的曲率的信息的一组，边缘组和顶点组，以及投影模块，用于搜索与顶点分组模块分组的一个或多个顶点相对应的一个或多个切平面 在每个切平面上投影一个或多个相应的顶点，以及恢复输入网格的一个或多个边缘。

公开(公告)号：US20110153299A1

公开(公告)日：2011-06-23

申请号：US12784433

申请日：2010-05-20

申请人： Young Hee Kim ,  Soon Hyoung Pyo ,  Bon Ki Koo

发明人： Young Hee Kim ,  Soon Hyoung Pyo ,  Bon Ki Koo

IPC分类号： G06G7/57

CPC分类号： G06F17/5018 ,  G06F2217/16

摘要： Provided is a method of simulating various viscoelastic fluids having viscosity, elasticity, and plasticity, based on smoothed particle hydrodynamics (SPH), which is widely used in fluid simulation using particles. Artificial forces related with viscosity, elasticity, and plasticity are added to address fundamental numerical limitations of a SPH method due to use of particle approximation and to improve expression of characterized motions of a viscoelastic fluid. Since the artificial forces are added, and parameters are adjusted according to the adding of the artificial forces, a fluid can be realistically expressed, and the control of a fluid motion is facilitated.

摘要翻译： 提供了一种基于平滑的粒子流体动力学（SPH）来模拟具有粘度，弹性和可塑性的各种粘弹性流体的方法，其广泛用于使用粒子的流体模拟。 添加与粘度，弹性和可塑性相关的人造力，以解决SPH方法的基本数值限制，这是由于使用粒子近似并改善了粘弹性流体的特征运动的表达。 由于人造力被加入，并且根据人造力的加法调节参数，所以可以实际地表达流体，并且便于流体运动的控制。

公开(公告)号：US20120131592A1

公开(公告)日：2012-05-24

申请号：US13296489

申请日：2011-11-15

申请人： Young Hee KIM ,  Soon Hyoung Pyo ,  Bon Ki Koo

发明人： Young Hee KIM ,  Soon Hyoung Pyo ,  Bon Ki Koo

IPC分类号： G06F9/46

CPC分类号： G06F9/5027 ,  G06F2209/5017

摘要： Disclosed are a parallel computing method for particle based simulation that may decrease a calculation delay due to data communication by simultaneously performing the data communication and a simulation calculation and increasing parallelism of a task, and an apparatus thereof. The parallel computing method for particle based simulation according to an exemplary embodiment to the present invention may include decomposing the whole calculation domain of a manager node into a plurality of sub-domains based on a grid macro-cell based orthogonal recursive bisection (ORB) method; allocating the decomposed sub-domains to worker nodes; and performing load balancing with respect to the worker nodes.

摘要翻译： 公开了一种用于基于粒子的仿真的并行计算方法，其可以通过同时执行数据通信以及模拟计算和增加任务的并行性来减少由于数据通信而导致的计算延迟及其装置。 根据本发明的示例性实施例的用于基于粒子的模拟的并行计算方法可以包括基于基于网格宏小区的正交递归平分（ORB）方法将管理器节点的整个计算域分解成多个子域 ; 将分解的子域分配到工作节点; 并且相对于工作节点执行负载平衡。

公开(公告)号：US20090213119A1

公开(公告)日：2009-08-27

申请号：US12314784

申请日：2008-12-16

申请人： Seung Taik Oh ,  Man Jai Lee ,  Bon Ki Koo ,  Soon Hyoung Pyo ,  Young Hee Kim ,  Seung Hyup Shin ,  Jang Hee Kim ,  Byung Seok Roh

发明人： Seung Taik Oh ,  Man Jai Lee ,  Bon Ki Koo ,  Soon Hyoung Pyo ,  Young Hee Kim ,  Seung Hyup Shin ,  Jang Hee Kim ,  Byung Seok Roh

IPC分类号： G06T15/00

CPC分类号： G06T17/20 ,  G06T17/205

摘要： A three-dimensional (3D) remeshing apparatus includes a curved surface geometry module for calculating one or more geometric elements, including a normal and a curvature, based on data of an input mesh, a vertex grouping module for grouping vertices of the mesh into a general group, an edge group, and an apex group using information of the curvature calculated by the curved surface geometry module, and a projection module for searching for one or more tangent planes corresponding to one or more of the vertices grouped by the vertex grouping module, projecting one or more corresponding vertices on each of the tangent planes, and restoring one or more edges of the input mesh.

摘要翻译： 三维（3D）重新镶嵌装置包括：曲面几何模块，用于基于输入网格的数据计算包括正常和曲率的一个或多个几何元素;顶点分组模块，用于将网格的顶点分成 使用由曲面几何模块计算出的曲率的信息的一组，边缘组和顶点组，以及投影模块，用于搜索与顶点分组模块分组的一个或多个顶点相对应的一个或多个切平面 在每个切平面上投影一个或多个相应的顶点，以及恢复输入网格的一个或多个边缘。

公开(公告)号：US20110148882A1

公开(公告)日：2011-06-23

申请号：US12857940

申请日：2010-08-17

申请人： Byung Seok Roh ,  Seung Hyup Shin ,  Soon Hyoung Pyo ,  Bon Ki Koo

发明人： Byung Seok Roh ,  Seung Hyup Shin ,  Soon Hyoung Pyo ,  Bon Ki Koo

IPC分类号： G06T11/20

CPC分类号： G09B23/12

摘要： Disclosed is a fire simulation method using particle fuel. The fire simulation method includes: preparing a grid and a fuel particle in an initial state; calculating speed of the fuel particle by using the speed of the grid; calculating advection of the fuel particle; tracking and finding a fuel surface; setting temperature at the fuel surface; calculating buoyancy generated by the combustion of the fuel particle; calculating a vortex effect generated by the combustion of the fuel particle; calculating the speed of the grid meeting a incompressible condition based on a calculated result value for the buoyancy and the vortex effect; and obtaining a result of temperature transition from the change in temperature field advection and temperature based on the speed of the grid meeting the incompressible condition.

摘要翻译： 公开了使用粒子燃料的火灾模拟方法。 火灾模拟方法包括：准备初始状态下的格栅和燃料粒子; 通过使用网格的速度来计算燃料粒子的速度; 计算燃料颗粒的对流; 跟踪和查找燃料表面; 燃油表面的设定温度; 计算由燃料颗粒燃烧产生的浮力; 计算由燃料颗粒的燃烧产生的涡流效应; 基于浮力和涡流效应的计算结果值，计算满足不可压缩条件的网格的速度; 并根据满足不可压缩条件的电网速度从温度场平流和温度变化中获得温度转换结果。

公开(公告)号：US20100161298A1

公开(公告)日：2010-06-24

申请号：US12487285

申请日：2009-06-18

申请人： Young Hee KIM ,  Bon Ki Koo

发明人： Young Hee KIM ,  Bon Ki Koo

IPC分类号： G06G7/48 ,  G06F17/11

CPC分类号： G06F17/5009 ,  G06F2217/16

摘要： A method for calculating a force acting on an interface between immiscible fluids in an SPH (Smoothed Particle Hydrodynamics) based fluid simulation includes: calculating a force caused by viscosities of the fluids; calculating a force caused by pressures of the fluids; calculating an external force applied to the fluids from outside; and calculating an interactive force caused by interaction between the fluids. The force acting on the interface between the immiscible fluids are obtained by using sum of the force caused by the viscosities, the force caused by the pressures, the external force and the interactive force. The interactive force is a surface tensional force calculated based on a pressure acting on the interface between the fluids.

摘要翻译： 一种用于计算在SPH（平滑粒子流体动力学）流体模拟中的不混溶流体之间的界面上的力的方法包括：计算由流体的粘度引起的力; 计算由流体压力引起的力; 计算从外部施加到流体的外力; 并计算由流体之间的相互作用引起的交互力。 通过使用由粘度，由压力引起的力，外力和相互作用力引起的力的和来获得作用在不混溶流体之间的界面上的力。 相互作用力是基于作用在流体之间的界面上的压力计算的表面张力。

公开(公告)号：US08335676B2

公开(公告)日：2012-12-18

申请号：US12487285

申请日：2009-06-18

申请人： Young Hee Kim ,  Bon Ki Koo

发明人： Young Hee Kim ,  Bon Ki Koo

IPC分类号： G06G7/50

CPC分类号： G06F17/5009 ,  G06F2217/16

摘要： A method for calculating a force acting on an interface between immiscible fluids in an SPH (Smoothed Particle Hydrodynamics) based fluid simulation includes: calculating a force caused by viscosities of the fluids; calculating a force caused by pressures of the fluids; calculating an external force applied to the fluids from outside; and calculating an interactive force caused by interaction between the fluids. The force acting on the interface between the immiscible fluids are obtained by using sum of the force caused by the viscosities, the force caused by the pressures, the external force and the interactive force. The interactive force is a surface tensional force calculated based on a pressure acting on the interface between the fluids.

摘要翻译： 一种用于计算在SPH（平滑粒子流体动力学）流体模拟中的不混溶流体之间的界面上的力的方法包括：计算由流体的粘度引起的力; 计算由流体压力引起的力; 计算从外部施加到流体的外力; 并计算由流体之间的相互作用引起的交互力。 通过使用由粘度，由压力引起的力，外力和相互作用力引起的力的和来获得作用在不混溶流体之间的界面上的力。 相互作用力是基于作用在流体之间的界面上的压力计算的表面张力。

公开(公告)号：US20100094608A1

公开(公告)日：2010-04-15

申请号：US12481305

申请日：2009-06-09

申请人： Seung Taik Oh ,  Young Hee Kim ,  Byung Seok Roh ,  Bon Ki Koo

发明人： Seung Taik Oh ,  Young Hee Kim ,  Byung Seok Roh ,  Bon Ki Koo

IPC分类号： G06G7/48

CPC分类号： G06F17/5009 ,  G06F2217/16

摘要： A method of processing a rigid body interaction in a particle-based fluid simulation includes determining a collision direction based on a normal vector of a pair of input particles and confirming whether parent objects of the particles actually collide against each other after the determination, and calculating a perpendicular impulse based on properties of the parent objects when the collision is confirmed. The method further includes calculating a final collision based boundary force by applying a tangential friction force to the calculated perpendicular impulse to apply the final collision based boundary force to the respective particles.

摘要翻译： 在基于粒子的流体模拟中处理刚体相互作用的方法包括基于一对输入粒子的法向量确定碰撞方向，并确定粒子的父对象在确定之后是否实际上彼此碰撞，并且计算 当确定碰撞时，基于父对象的属性的垂直脉冲。 该方法还包括通过向所计算的垂直脉冲施加切向摩擦力来计算最终的基于碰撞的边界力，以将最终的基于碰撞的边界力应用于各个粒子。

公开(公告)号：US20130050434A1

公开(公告)日：2013-02-28

申请号：US13563367

申请日：2012-07-31

申请人： Kap Kee KIM ,  Seung Uk Yoon ,  Bon Woo Hwang ,  Ji Hyung Lee ,  Bon Ki Koo

发明人： Kap Kee KIM ,  Seung Uk Yoon ,  Bon Woo Hwang ,  Ji Hyung Lee ,  Bon Ki Koo

IPC分类号： G06T17/00 ,  H04N13/02

CPC分类号： G06T17/00 ,  G06T2200/08

摘要： The present invention provides a local multi-resolution 3-D face-inherent model generation apparatus, including one or more 3-D facial model generation cameras for photographing a face of an object at various angles in order to obtain one or more 3-D face models, a 3-D face-inherent model generation unit for generating a 3-D face-inherent model by composing the one or more 3-D face models, a local photographing camera for photographing a local part of the face of the object, a control unit for controlling the position of the local photographing camera on the 3-D face-inherent model, and a local multi-resolution 3-D face-inherent model generation unit for generating a local multi-resolution face-inherent model by composing an image captured by the local photographing camera and the 3-D face-inherent model, a local multi-resolution 3-D face-inherent model generation using the local multi-resolution 3-D face-inherent model generation apparatus, and a skin management system.

摘要翻译： 本发明提供了一种局部多分辨率3-D面部固有模型生成装置，包括一个或多个三维面部模型生成摄像机，用于以各种角度拍摄对象的脸部，以获得一个或多个3-D 面部模型，3-D面部固有模型生成单元，用于通过组合一个或多个3-D脸部模型来产生3-D面部固有模型，用于拍摄对象的脸部的局部部分的本地摄影相机 用于控制3-D面部固有模型上的本地拍摄相机的位置的控制单元和用于通过以下方式产生局部多分辨率面部固有模型的局部多分辨率3-D面部固有模型生成单元 组合本地拍摄照相机和3-D面部固有模型拍摄的图像，使用本地多分辨率3-D面部固有模型生成装置的局部多分辨率3-D面部固有模型生成，以及 皮肤管理系统。

公开(公告)号：US08270704B2

公开(公告)日：2012-09-18

申请号：US12314678

申请日：2008-12-15

申请人： Ho Won Kim ,  Chang Woo Chu ,  Bon Ki Koo

发明人： Ho Won Kim ,  Chang Woo Chu ,  Bon Ki Koo

IPC分类号： G06K9/00 ,  G06T15/00 ,  H04N13/00

CPC分类号： G06T17/20 ,  G06T15/205

摘要： A method for reconstructing a 3D shape model of an object by using multi-view image information, includes: inputting multi-view images obtained by photographing the object from multiple viewpoints in a voxel space, and extracting silhouette information and color information of the multi-view images; reconstructing visual hulls by silhouette intersection using the silhouette information; and approximating polygons of cross-sections of the visual hulls to a natural geometric shape of the object by using the color information. Further, the method includes expressing a 3D geometric shape of the object by connecting the approximated polygons to create a mesh structure; extracting color textures of a surface of the object by projecting meshes of the mesh structure to the multi-view image; and creating a 3D shape model by modeling natural shape information and surface color information of the object.

摘要翻译： 一种用于通过使用多视点图像信息来重建对象的3D形状模型的方法包括：输入通过在体素空间中从多个视点拍摄对象而获得的多视图图像，以及提取多视点图像信息的轮廓信息和颜色信息， 查看图像; 使用剪影信息通过剪影交点重建视觉船体; 以及通过使用颜色信息将视觉外壳的横截面的多边形近似为对象的自然几何形状。 此外，该方法包括通过连接近似多边形以形成网格结构来表达对象的3D几何形状; 通过将网格结构的网格投影到多视点图像来提取对象的表面的颜色纹理; 以及通过对对象的自然形状信息和表面颜色信息进行建模来创建3D形状模型。