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1.发明授权
公开(公告)号：KR101359661B1
公开(公告)日：2014-02-10
申请号：KR1020120022397
申请日：2012-03-05
Applicant: 한국과학기술원
IPC: G06T17/00
Abstract: 본 발명은 삼각형 메쉬로 표현된 3차원 물체를 DoSurface 표현 방법으로 변환하는 시스템 및 그 방법에 관한 것으로서, DoSurface 표현 방법의 특성을 이용하여 각 삼각형이 만날 수 있는 직선들의 후보들을 효과적으로 선별하고, 교점을 쉽게 계산할 수 있는 좌표계로 변환을 수행하며, 변환된 좌표계에서 하나의 삼각형과 만날 수 있는 후보 직선과 교점을 빠르게 구할 수 있는 시스템 및 그 방법을 제공함에 목적이 있다.
이러한 목적을 달성하기 위한 본 발명은, 정규평면을 정의하는 정규평면 정의부; DoSurface 표현 방법을 정의하는 직선들을 분류하는 방향벡터 분류부; 분류된 직선들의 방향벡터가 정규평면의 법선 벡터와 일치하도록 변환하는 변환식들을 생성하는 정규평면 변환부; 삼각형 메쉬로 표현된 3차원 물체를 상기 변환식들을 이용하여 좌표계 변환을 수행하는 좌표계 변환부; 변환 좌표계에서 삼각형 내부를 지나는 직선들을 선별하는 후보 직선 선별부; 및 상기 변환 좌표계에서 직선의 시작점에서 삼각형과 직선이 만나는 점까지의 거리를 계산하는 깊이값 계산부; 를 포함한다.-
公开(公告)号：KR1020130101332A
公开(公告)日：2013-09-13
申请号：KR1020120022397
申请日：2012-03-05
Applicant: 한국과학기술원
IPC: G06T17/00
Abstract: PURPOSE: A system and a method for converting a 3D object represented by triangle meshes into a 3D object represented by depth on surface (DoSurface) are provided to classify straight lines defining DoSurface representation and perform calculation after mapping the straight lines to a normal plane, thereby simplifying a process to acquire intersections between triangles and straight lines. CONSTITUTION: A system for converting a 3D object represented by triangle meshes into a 3D object represented by DoSurface comprises a normal plane definition unit (100) to define a normal plane; a direction vector classification unit (200) to classify straight lines defining DoSurface representation; a normal plane conversion unit (300) to generate a conversion formula in which a direction vector of the classified straight lines is equal to a normal vector of the normal plane; a coordinate system conversion unit (400) to perform conversion of the coordinate system of a 3D object represented by triangle meshes using the conversion formula; a candidate straight line selection unit (500) to select straight lines that passes inside of a triangles in a converted coordinate system; and a depth value calculation unit (600) to calculate a distance from a star point of a straight line to the triangle in the converted coordinate system. [Reference numerals] (100) Normal plane definition unit; (200) Direction vector classification unit; (300) Normal plane conversion unit; (400) Coordinate system conversion unit; (500) Candidate straight line selection unit; (600) Depth value calculation unit; (AA) Conversion formula; (BB) Conversion coordinate system; (CC) Candidate straight line; (DD) Depth information
Abstract translation: 目的：提供一种用于将由三角形网格表示的3D对象转换为由表面深度（DoSurface）表示的3D对象的系统和方法，用于对定义DoSurface表示的直线进行分类，并将直线映射到正常平面后进行计算， 从而简化了获取三角形和直线之间的交点的过程。 构成：用于将由三角形网格表示的3D对象转换为由DoSurface表示的3D对象的系统包括用于定义正常平面的普通平面定义单元（100）; 方向矢量分类单元（200），用于对定义DoSurface表示的直线进行分类; 正交平面转换单元（300），用于生成分类直线的方向矢量等于所述法线平面的法线矢量的转换公式; 坐标系转换单元，用于使用转换公式执行由三角形网格表示的3D对象的坐标系的转换; 候选直线选择单元（500），用于选择在经转换的坐标系中的三角形内部通过的直线; 以及深度值计算单元（600），用于计算在转换的坐标系中从直线的星点到三角形的距离。 （附图标记）（100）正常平面定义单元; （200）方向向量分类单位; （300）正常平面转换单元; （400）坐标系转换单位; （500）候选直线选择单位; （600）深度值计算单位; （AA）转化公式; （BB）转换坐标系; （CC）候选直线; （DD）深度信息
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公开(公告)号：KR101284136B1
公开(公告)日：2013-07-10
申请号：KR1020120020215
申请日：2012-02-28
Applicant: 한국과학기술원
CPC classification number: G06T7/97 , G06T7/246 , G06T2207/20228 , H04N13/218
Abstract: PURPOSE: A camera parameter estimating and object extracting system for automatic restoration of a three-dimensional object is provided to extract an object while extracting an object area from an image by making fewer calculations. CONSTITUTION: A background modeling unit (100) forms the lattice background of a photographing object and obtains an image including the background. The background modeling unit extracts feature points of the image and performs background modeling based on the extracted feature points. A camera parameter estimating unit (200) automatically estimates a camera parameter from the extracted feature points. An object area extracting unit (300) extracts an object in the image using the background modeling information. [Reference numerals] (100) Background modeling unit; (200) Camera parameter estimating unit; (300) Object area extracting unit; (AA) Feature point; (BB) Background region information; (CC) Camera parameter; (DD) Object area
Abstract translation: 目的：提供用于自动恢复三维物体的照相机参数估计和物体提取系统，以通过减少计算从图像中提取物体区域来提取物体。 构成：背景建模单元（100）形成拍摄对象的格子背景并获得包括背景的图像。 背景建模单元提取图像的特征点，并基于提取的特征点进行背景建模。 相机参数估计单元（200）根据所提取的特征点自动估计相机参数。 对象区域提取单元（300）使用背景建模信息提取图像中的对象。 （附图标记）（100）背景建模单元; （200）相机参数估计单元; （300）对象区域提取单元; （AA）特征点; （BB）背景区域信息; （CC）相机参数; （DD）对象区域
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公开(公告)号：KR101284137B1
公开(公告)日：2013-07-10
申请号：KR1020120020216
申请日：2012-02-28
Applicant: 한국과학기술원
CPC classification number: G06T15/205 , G06T11/203 , G06T2207/20068 , H04N19/93
Abstract: PURPOSE: A three-dimensional object's depth information representing and recording system is provided to form a three dimensional surface considering the characteristics of a display device showing a three-dimensional object by representing and recording the depth information of the three-dimensional object by the line segment. CONSTITUTION: A three dimensional surface forming unit (100) defines a three-dimensional surface on which a three dimensional object is projected. A depth information projecting unit (200) calculates the depth from the three-dimensional surface to the three-dimensional object. The depth information projecting unit calculates the distance from a intersecting point between a straight line which crosses at one point defined on the three-dimensional surface and has the same direction vector as a normal vector of the point on the three-dimensional surface and the three dimensional surface to a intersecting point between the straight line and the thee-dimensional object. A depth information recording unit (300) records the calculated depth information on the three-dimensional surface. [Reference numerals] (100) Three dimensional surface forming unit; (AA) Depth information projecting unit; (BB) Depth information recording unit
Abstract translation: 目的：提供一种三维物体的深度信息表示和记录系统，以通过以线表示和记录三维物体的深度信息来考虑显示三维物体的显示装置的特性来形成三维表面 分割。 构成：三维表面形成单元（100）限定投影有三维物体的三维表面。 深度信息投影单元（200）计算从三维表面到三维物体的深度。 深度信息投影单元计算从在三维表面上限定的一个点交叉的直线之间的相交点的距离，并且具有与三维表面上的点的法线矢量相同的方向向量， 尺寸表面到直线和该尺寸物体之间的相交点。 深度信息记录单元（300）将计算出的深度信息记录在三维表面上。 （附图标记）（100）三维表面形成单元; （AA）深度信息投影单元; （BB）深度信息记录单元
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