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1. 发明授权

US08203576B2 Method for aligning objects 有权
标题翻译：对齐对象的方法
公开(公告)号：US08203576B2
公开(公告)日：2012-06-19
申请号：US12338963
申请日：2008-12-18
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Shao-Qin Xie , Min Wang , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Shao-Qin Xie , Min Wang , Hua Huang
IPC分类号： G06K9/32
CPC分类号： G06F17/50 , G06K9/32 , G06T7/33 , G06T2200/04 , G06T2207/10028
摘要： A computer implemented method for aligning objects receives a reference object and a to-be-moved object; determining feature elements of the reference object. A first coordinate system is constructed according to a plurality of feature elements of the reference object. A second coordinate system is constructed according to a plurality of feature elements of the to-be-moved object. A third coordinate system is constructed according to the first coordinate system and the second coordinate system. An operation matrix is computed according to the three coordinate systems. The two objects are aligned using the operation matrix.
摘要翻译：用于对准对象的计算机实现的方法接收参考对象和待移动对象; 确定参考对象的特征元素。根据参考对象的多个特征元素构建第一坐标系。根据待移动物体的多个要素构成第二坐标系。第三坐标系根据第一坐标系和第二坐标系构成。根据三坐标系计算运算矩阵。使用操作矩阵对两个对象进行对齐。

2. 发明授权

US08072450B2 System and method for measuring a three-dimensional object 有权
标题翻译：用于测量三维物体的系统和方法
公开(公告)号：US08072450B2
公开(公告)日：2011-12-06
申请号：US12233543
申请日：2008-09-18
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang , Xiao-Chao Sun , Shao-Qin Xie , Jin-Bo Hu
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang , Xiao-Chao Sun , Shao-Qin Xie , Jin-Bo Hu
IPC分类号： G06T15/00 , G01B7/00 , G06K9/00
CPC分类号： G06T7/0004 , G06T7/521
摘要： A system for measuring a three-dimensional object is provided. The system measures differences between a 3D model of an object and a point cloud of the object, and highlights the differences on the 3D model using different colors according to difference ranges that the differences fall.
摘要翻译：提供了一种用于测量三维物体的系统。该系统测量对象的3D模型和对象的点云之间的差异，并且根据差异落差的差异范围，突出显示使用不同颜色的3D模型上的差异。

3. 发明授权

US08249304B2 System and method for measuring gaps between object parts 失效
标题翻译：用于测量物体间隙的系统和方法
公开(公告)号：US08249304B2
公开(公告)日：2012-08-21
申请号：US12556777
申请日：2009-09-10
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Shao-Qin Xie
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Shao-Qin Xie
IPC分类号： G06K9/00 , G06K9/62
CPC分类号： G01B11/14 , G06T7/001 , G06T2207/30164
摘要： A detecting method for measuring gaps between two parts of an object is provided. The detecting method selects a reference image and a measured image, merges the reference image and the measured image to form an image of the object, grids the reference image and the measured image to obtain triangle mesh surfaces, obtains boundary points and outline points of the measured image, and obtains triangles on a joint portion of the reference image and measured points on a corresponding joint portion of the measured image. The method further compares each measured point with an obtained triangle to obtain gap values of the joint portion between the reference image and the measured image, and outputs an analysis report of the gap values on a display device.
摘要翻译：提供了一种用于测量物体的两个部分之间的间隙的检测方法。检测方法选择参考图像和测量图像，合并参考图像和测量图像以形成对象的图像，网格参考图像和测量图像以获得三角形网格表面，获得边界点和轮廓点并且在参考图像的接合部分和测量图像的对应关节部分上的测量点获得三角形。该方法进一步将每个测量点与获得的三角形进行比较，以获得参考图像和测量图像之间的关节部分的间隙值，并在显示装置上输出间隙值的分析报告。

4. 发明授权

US07986814B2 Method for measuring a curved surface of an object 有权
标题翻译：用于测量物体的曲面的方法
公开(公告)号：US07986814B2
公开(公告)日：2011-07-26
申请号：US12567872
申请日：2009-09-28
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang
IPC分类号： G06K9/00
CPC分类号： G06F17/50
摘要： A method for measuring a curved surface of an object is provided. The method aligns a point-cloud of an object and a triangulated curved surface of the object, obtain an original deviation value for each triangle on the triangulated curved surface by measuring a distance between each triangle and the nearest point in the point-cloud, and assign a color to each triangle according to a color assigned to a deviation range in which each original deviation value falls. The method further balances the assigned colors of all triangles on the triangulated curved surface, and generates a report according to data on the triangulated curved surface with the balanced colors.
摘要翻译：提供了一种用于测量物体的曲面的方法。该方法将物体的点云和物体的三角形曲面对齐，通过测量每个三角形与点云中最近点之间的距离，获得三角形曲面上每个三角形的原始偏差值，以及根据分配给每个原始偏差值的偏差范围的颜色，为每个三角形分配颜色。该方法进一步平衡了三角形曲面上所有三角形的分配颜色，并根据三角曲面上具有平衡颜色的数据生成报告。

5. 发明申请

US20100150402A1 METHOD FOR MEASURING A CURVED SURFACE OF AN OBJECT 有权
标题翻译：测量物体弯曲表面的方法
公开(公告)号：US20100150402A1
公开(公告)日：2010-06-17
申请号：US12567872
申请日：2009-09-28
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang
IPC分类号： G06K9/00
CPC分类号： G06F17/50
摘要： A method for measuring a curved surface of an object is provided. The method aligns a point-cloud of an object and a triangulated curved surface of the object, obtain an original deviation value for each triangle on the triangulated curved surface by measuring a distance between each triangle and the nearest point in the point-cloud, and assign a color to each triangle according to a color assigned to a deviation range in which each original deviation value falls. The method further balances the assigned colors of all triangles on the triangulated curved surface, and generates a report according to data on the triangulated curved surface with the balanced colors.
摘要翻译：提供了一种用于测量物体的曲面的方法。该方法将物体的点云和物体的三角形曲面对齐，通过测量每个三角形与点云中最近点之间的距离，获得三角形曲面上每个三角形的原始偏差值，以及根据分配给每个原始偏差值的偏差范围的颜色，为每个三角形分配颜色。该方法进一步平衡了三角形曲面上所有三角形的分配颜色，并根据三角曲面上具有平衡颜色的数据生成报告。

6. 发明授权

US07596468B2 Method for measuring a selected portion of a curved surface of an object 失效
标题翻译：用于测量物体的曲面的选定部分的方法
公开(公告)号：US07596468B2
公开(公告)日：2009-09-29
申请号：US12179590
申请日：2008-07-25
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang , Hua Huang
IPC分类号： G01B21/20
CPC分类号： G01B11/25
摘要： A computer-implemented method for measuring a selected portion of a curved surface of an object is disclosed. The method includes the blocks of displaying a straight-line across an object, stretching the straight-line to form a plane, determining intersection points between the plane and the curved surface of the object, determining a vertical point of each point-cloud around the straight-line on the curved surface, a corresponding vertical distance, and a corresponding normal vector, projecting the vertical points onto the plane vertically, determining measured points, up tolerance points, and down tolerance points for the point-clouds around the straight-line on the plane, connecting the corresponding points to lines, and determining if one or more the dimensions of a selected portion around the straight-line of the object is acceptable according to the connected lines.
摘要翻译：公开了一种用于测量物体的曲面的选定部分的计算机实现的方法。该方法包括跨越对象显示直线的块，拉伸直线以形成平面，确定平面与物体的曲面之间的交点，确定物体周围的每个点云的垂直点曲线上的直线，相应的垂直距离和相应的法向量，垂直点垂直投影到平面上，为直线上的点云确定测量点，上限公差点和向下公差点在平面上，将对应的点连接到线，并且根据所连接的线确定物体的直线周围的所选部分的尺寸中的一个或多个尺寸是否可接受。

7. 发明授权

US08254723B2 System and method for extracting boundary elements of an object 失效
标题翻译：用于提取对象边界元素的系统和方法
公开(公告)号：US08254723B2
公开(公告)日：2012-08-28
申请号：US12353259
申请日：2009-01-14
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Hua Huang
IPC分类号： G06K9/36
CPC分类号： G06T7/12 , G06T2207/10028 , G06T2207/30164
摘要： A computer-implemented method for extracting boundary elements of an object includes receiving measurement data of a point cloud of the object and a maximum edge length of a triangle to form a triangular mesh surface of the point cloud, constructing the triangular mesh surface, and extracting boundary points from the triangular mesh surface. The method further includes grouping the boundary points according to a vector relationship between one boundary point and each of the other boundary points, fitting each group of boundary points to an appropriate boundary characteristic. The appropriate boundary characteristic may be output to a storage system.
摘要翻译：用于提取对象的边界元素的计算机实现的方法包括：接收对象的点云的测量数据和三角形的最大边缘长度，以形成点云的三角形网格表面，构造三角形网格表面，以及提取三角形网格表面的边界点。该方法还包括根据一个边界点和每个其他边界点之间的矢量关系对边界点进行分组，将每组边界点拟合到适当的边界特征。可以将适当的边界特性输出到存储系统。

8. 发明授权

US08254664B2 System and method for measuring errors of workpieces 失效
标题翻译：用于测量工件误差的系统和方法
公开(公告)号：US08254664B2
公开(公告)日：2012-08-28
申请号：US12582819
申请日：2009-10-21
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Hua Huang
IPC分类号： G06K9/00
CPC分类号： G01B11/24 , G06T7/001 , G06T2207/30164
摘要： A method for measuring errors of workpieces by comparing a three-dimensional model and the workpieces manufactured according to the three-dimensional model is provided. The method converts a point cloud of each workpiece to a measured triangular mesh model, and aligns each measured triangular mesh model to the three-dimensional model. The method further compares each measured triangular mesh model with the three-dimensional model to check for differences between two model so as to obtain errors of each workpiece, and generates one or more analysis reports according to the errors of each workpiece.
摘要翻译：提供了一种通过比较三维模型和根据三维模型制造的工件来测量工件误差的方法。该方法将每个工件的点云转换为测量的三角形网格模型，并将每个测量的三角形网格模型对齐到三维模型。该方法进一步将每个测量的三角形网格模型与三维模型进行比较，以检查两个模型之间的差异，从而获得每个工件的误差，并根据每个工件的误差生成一个或多个分析报告。

9. 发明授权

US07933749B2 System and method for computing minimum distances between two point clouds 有权
标题翻译：用于计算两点云之间最小距离的系统和方法
公开(公告)号：US07933749B2
公开(公告)日：2011-04-26
申请号：US12056238
申请日：2008-03-26
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Hua Huang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Hua Huang
IPC分类号： G06F7/60 , G06F17/10
CPC分类号： G06T7/001 , G06K9/6211 , G06T7/30 , G06T2207/10028 , G06T2207/30108
摘要： A method for computing minimum distances between two point clouds is provided. The method includes: (a) acquiring a first point cloud and a second point cloud; (b) establishing a topological structure for the second point cloud to make points of the second point cloud confined in a plurality of related cubical grids; (c) selecting a point from the first point cloud; (d) searching one or more cubical grids from the related cubical grids according to the topological structure and computing a distance between the selected point and each of points which belong to the second point cloud and in the searched cubical grids to obtain a closest point from the second point cloud, which has a shortest distance to the selected point; (e) repeating steps from (c) to (d) until all the points in the first point cloud have been selected. A related system is also provided.
摘要翻译：提供了一种计算两点云之间最小距离的方法。该方法包括：（a）获取第一点云和第二点云; （b）建立第二点云的拓扑结构，使得第二点云的点被限制在多个相关的立方体网格中; （c）从第一个点云选择一个点; （d）根据拓扑结构从相关立方网格中搜索一个或多个立方网格，并计算所选点与属于第二点云的每个点之间的距离以及所搜索的立方网格中的距离，以获得最接近的点与选定点距离最短的第二点云; （e）重复从（c）到（d）的步骤，直到选择了第一个点云中的所有点。还提供了相关系统。

10. 发明授权

US09030473B2 Computing device and method for determining distance between two curved surfaces 有权
标题翻译：用于确定两个曲面之间的距离的计算装置和方法
公开(公告)号：US09030473B2
公开(公告)日：2015-05-12
申请号：US13480481
申请日：2012-05-25
申请人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang
发明人： Chih-Kuang Chang , Xin-Yuan Wu , Min Wang
IPC分类号： G06T17/20 , G06T7/00 , G06F17/20 , G01B5/14 , G06F17/50
CPC分类号： G01B5/14 , G06F17/20 , G06F17/50 , G06T7/001 , G06T17/20 , G06T2207/30164
摘要： A computing device reads information in relation to a first curved surface and a second curved surface from a storage device, respectively meshes the first and second curved surfaces into a plurality of first and second triangles, and divides a parametric plane associated into a plurality of first grids, where each first grid corresponds to a small box in 3D space. The device determines associations between the first/second triangles of the two curved surfaces and the small boxes in the 3D space, determines a second triangle that is nearest to each first triangle of the first curved surface, and determines a distance between the first triangle and the second triangle as a minimum distance from the first triangle to the second curved surface. A minimum value from all of the minimum distances is determined as a minimum distance between the first curved surface and the second curved surface.
摘要翻译：计算设备从存储设备读取关于第一弯曲表面和第二弯曲表面的信息，分别将第一和第二曲面形成多个第一和第二三角形，并将与多个第一和第二三角形相关联的参数平面分割网格，其中每个第一个网格对应于3D空间中的一个小框。设备确定两个曲面的第一/第二三角形和3D空间中的小框之间的关联，确定最靠近第一曲面的每个第一三角形的第二个三角形，并确定第一个三角形和第二个三角形作为从第一个三角形到第二个曲面的最小距离。将所有最小距离的最小值确定为第一曲面和第二曲面之间的最小距离。

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