公开(公告)号：US07925109B2

公开(公告)日：2011-04-12

申请号：US12014110

申请日：2008-01-15

申请人： Chih-Kuang Chang ,  Shan-Yang Fu ,  Xin-Yuan Wu ,  Xiao-Chao Sun

发明人： Chih-Kuang Chang ,  Shan-Yang Fu ,  Xin-Yuan Wu ,  Xiao-Chao Sun

IPC分类号： G06K9/36

CPC分类号： G01B11/2518 ,  G01B21/04 ,  G01B21/20

摘要： A method for simplifying a point cloud is provided. The method includes: (a) acquiring a point cloud; (b) establishing a topological structure for the point cloud; (c) selecting a maiden point from the point cloud as a selected point; (d) searching a plurality of points which are near to the selected point from the point cloud according to the topological structure as near points of the selected point; (e) fitting the selected point and the near points to form a paraboloid, obtaining curve equations of the paraboloid, and computing a curvature of the selected point according to the curve equations and a curvature formula; (f) repeating the steps from (c) to (e) until the curvatures of all points in the point have been computed; and (g) simplifying the point cloud according to the curvatures of the points and a preconfigured parameter. A related system is also provided.

摘要翻译： 提供了一种简化点云的方法。 该方法包括：（a）获取点云; （b）建立点云的拓扑结构; （c）从点云中选择一个少女点作为选择点; （d）根据所述拓扑结构将所选点附近的多个点从所述点云搜索到所述选定点的近点; （e）拟合所选点和近点以形成抛物面，获得抛物面的曲线方程，并根据曲线方程和曲率公式计算所选点的曲率; （f）重复（c）至（e）的步骤，直到计算出点中的所有点的曲率; 和（g）根据点的曲率和预配置的参数来简化点云。 还提供了相关系统。

公开(公告)号：US07925110B2

公开(公告)日：2011-04-12

申请号：US12014109

申请日：2008-01-15

申请人： Chih-Kuang Chang ,  Shan-Yang Fu

发明人： Chih-Kuang Chang ,  Shan-Yang Fu

IPC分类号： G06K9/36

CPC分类号： G06T17/00

摘要： A method for filtering a point cloud is provided. The method includes: (a) acquiring a point cloud of an object from a point cloud obtaining device; (b) establishing a topological structure for the point cloud; (c) selecting a maiden point from the point cloud as a selected point; (d) searching a plurality of points which are near to the selected point from the point cloud according to the topological structure as near points of the selected point; (e) determining whether the selected point is a noise point by comparing coordinate values of the selected point and coordinate values of the near points; (f) deleting or smoothing the noise point from the point cloud; and repeating steps from (c) to (f), until all points in the point cloud have been selected. A related system is also provided.

摘要翻译： 提供了一种过滤点云的方法。 该方法包括：（a）从点云获取装置获取对象的点云; （b）建立点云的拓扑结构; （c）从点云中选择一个少女点作为选择点; （d）根据所述拓扑结构将所选点附近的多个点从所述点云搜索到所述选定点的近点; （e）通过比较所选点的坐标值和近点的坐标值来确定所选点是否为噪点; （f）从点云中删除或平滑噪点; 并重复从（c）到（f）的步骤，直到点云中的所有点被选择为止。 还提供了相关系统。

公开(公告)号：US20090048782A1

公开(公告)日：2009-02-19

申请号：US12014109

申请日：2008-01-15

申请人： Chih-Kuang Chang ,  Shan-Yang Fu

发明人： Chih-Kuang Chang ,  Shan-Yang Fu

IPC分类号： G01B21/04 ,  G06F19/00

CPC分类号： G06T17/00

摘要： A method for filtering a point cloud is provided. The method includes: (a) acquiring a point cloud of an object from a point cloud obtaining device; (b) establishing a topological structure for the point cloud; (c) selecting a maiden point from the point cloud as a selected point; (d) searching a plurality of points which are near to the selected point from the point cloud according to the topological structure as near points of the selected point; (e) determining whether the selected point is a noise point by comparing coordinate values of the selected point and coordinate values of the near points; (f) deleting or smoothing the noise point from the point cloud; and repeating steps from (c) to (f), until all points in the point cloud have been selected. A related system is also provided.

摘要翻译： 提供了一种过滤点云的方法。 该方法包括：（a）从点云获取装置获取对象的点云; （b）建立点云的拓扑结构; （c）从点云中选择一个少女点作为选择点; （d）根据所述拓扑结构将所选点附近的多个点从所述点云搜索到所述选定点的近点; （e）通过比较所选点的坐标值和近点的坐标值来确定所选点是否为噪点; （f）从点云中删除或平滑噪点; 并重复从（c）到（f）的步骤，直到点云中的所有点被选择为止。 还提供了相关系统。