公开(公告)号：KR101028697B1

公开(公告)日：2011-04-14

申请号：KR1020080136591

申请日：2008-12-30

Applicant: 고려대학교 산학협력단

Inventor： 김창헌 ,  이성호 ,  박한욱

IPC: G06T7/40

Abstract: 밝기 독립적인 텍스쳐 합성 장치 및 방법이 개시된다. 영상합성부는 주어진 예제 텍스쳐로부터 얻어진 패치들을 밝기의 상대적인 변화값으로 표현되는 밝기 불변 도메인으로 변환한 후 패치들 사이의 정합 에러가 가장 작은 패치들이 서로 이웃하도록 결합하여 합성 영상을 생성한다. 영상보정부는 합성 영상 및 예제 텍스쳐를 밝기 불변 도메인으로 변환한 후 예제 텍스쳐 내의 점 중에서 합성 영상 내의 임의의 점에 이웃하는 이웃 픽셀들과 대응하는 이웃 픽셀들 사이의 이웃 거리가 최소가 되도록 하는 점에 의해 합성 영상을 보정한다. 본 발명에 따르면, 각 패치들의 밝기와 관계없이 일관성 있는 이웃을 찾을 수 있으며, 가시적인 단절이 적고 기존 기법보다 높은 동적 영역을 갖는 결과를 얻을 수 있다.
텍스쳐 합성, 텍스쳐, 밝기, 깊이 맵, 예제

公开(公告)号：KR1020080097089A

公开(公告)日：2008-11-04

申请号：KR1020070042239

申请日：2007-04-30

Applicant: 고려대학교 산학협력단

Inventor： 김창헌 ,  정소현

IPC: G06T19/20 ,  G06T17/00

CPC classification number: G06T19/20 ,  G06T17/205 ,  G06T2210/56 ,  G06T2219/2016

Abstract: A 3D shape deforming method based on a point, a 3D shaped interpolation frame generating method using the same and a recording medium are provided to deform a 3D shape rapidly by using axis and angle, and enable a user to select a shape deforming point freely, thereby performing efficient shape deforming work by rapidly checking a shape deformation result according to a deforming point. A moved shape deformation movement point is stored. The center point of the stored shape deformation point and the center point of the moved shape deformation movement point are computed(220). A shape deformation vector and shape deformation motion vector are produced based on the center point of the shape deformation point and the center point of the shape deformation movement point(230). According to the generated shape deformation vector and shape deformation motion vector, a rotation matrix changing a 3D shape is computed(240). According to the computed rotation matrix, a shape deformation coordinate of points forming 3D shape is produced. A 3D shape is deformed according to the computed shape deformation coordinate(250).

Abstract translation: 提供了一种基于点的3D形状变形方法，使用其的3D形状插值帧生成方法和记录介质，以通过使用轴和角度快速变形3D形状，并且使得用户能够自由地选择形状变形点， 从而通过根据变形点快速检查形状变形结果来进行有效的形状变形工作。 移动的形状变形运动点被存储。 计算存储形状变形点的中心点和移动形状变形运动点的中心点（220）。 基于形状变形点的中心点和形状变形运动点的中心点（230），生成形状变形矢量和形状变形运动矢量。 根据生成的形状变形矢量和形状变形运动矢量，计算出改变3D形状的旋转矩阵（240）。 根据计算的旋转矩阵，产生形成3D形状的点的形状变形坐标。 根据计算出的形状变形坐标（250），3D形状变形。

公开(公告)号：KR100779993B1

公开(公告)日：2007-11-28

申请号：KR1020060046608

申请日：2006-05-24

Applicant: 고려대학교 산학협력단

Inventor： 김창헌 ,  신승호 ,  이정

IPC: G06F17/50

CPC classification number: G06F17/5009 ,  G06F17/10

Abstract: A fluid simulation method applying a control value to a pressure field, a recording medium and an apparatus thereof are provided to obtain a detailed result by making a boundary interface of the fluid converge to that of a target shape. A fluid simulation method applying a control value to a pressure field comprises the following several steps. An apparatus of the fluid simulation method calculates a control value which is a scalar value with a direction, corresponding to a level set, of a target shape from the fluid(410). The apparatus calculates a modified pressure field of the boundary interface of the fluid by applying the control value to the pressure field and using a linear system which satisfies a non-compression condition of the boundary interface of the fluid(420). The apparatus converts the modified pressure field into a velocity field of the fluid(430). The apparatus moves the boundary interface and particles constituting the fluid according the velocity field(440).

Abstract translation: 提供了将压力场控制值应用到流体模拟方法，记录介质及其装置，以使流体的边界界面与目标形状的边界界面收敛。 将控制值应用于压力场的流体模拟方法包括以下几个步骤。 流体模拟方法的装置从流体（410）计算作为具有对应于目标形状的水平的方向的标量值的控制值。 该装置通过将控制值施加到压力场并使用满足流体（420）的边界界面的非压缩状态的线性系统来计算流体的边界界面的修正压力场。 该装置将改进的压力场转换成流体（430）的速度场。 该装置根据速度场移动构成流体的边界界面和颗粒（440）。

公开(公告)号：KR100729149B1

公开(公告)日：2007-06-19

申请号：KR1020060046600

申请日：2006-05-24

Applicant: 고려대학교 산학협력단

Inventor： 김창헌 ,  노병석 ,  정중환 ,  이정

IPC: G06F17/50

Abstract: A method and a system for simulating controllable multiphase gas, and a recording medium thereof are provided to fully represent an intention of an animator, control the multiphase gas to converge to several goal shapes, and facilitate extension by overcoming a weak point requiring too much operation time and showing only the motion facing the closest goal shape. A cell control value calculator(210) calculates the cell control value of each cell/goal shape. The cell control value is force, to a direction decreasing a distance between the multiphase gas and multiphase goal shapes(200) present in the random cell. A non-compressive condition calculator(240) calculates a velocity field satisfying the non-compressive condition of the multiphase gas by applying the cell control value to the non-compressive condition. A flow moving(250) part moves particles forming the multiphase game according to the velocity field. A particle control value calculator calculates the particle control value of each particle. The particle control value is the force, to the direction decreasing the distance between the particles and the multiphase goal shapes.

Abstract translation: 本发明提供了一种模拟可控多相气体的方法和系统及其记录介质，以充分体现动画制作者的意图，控制多相气体收敛到若干目标形状，并通过克服需要太多操作的弱点来促进扩展 时间并只显示面对最接近目标形状的动作。 小区控制值计算器（210）计算每个小区/目标形状的小区控制值。 单元控制值是减小存在于随机单元中的多相气体与多相目标形状（200）之间的距离的方向上的力。 非压缩条件计算器（240）通过将单元控制值应用于非压缩条件来计算满足多相气体的非压缩条件的速度场。 流动移动（250）部分根据速度场移动形成多阶段游戏的粒子。 粒子控制值计算器计算每个粒子的粒子控制值。 粒子控制值是朝着减小粒子与多相目标形状之间的距离的方向的力。