公开(公告)号：US20160350387A1

公开(公告)日：2016-12-01

申请号：US15161861

申请日：2016-05-23

Applicant: Dassault Systemes

Inventor： Laurent Marini ,  Remy Rorato ,  Jean-Francois Rameau

IPC: G06F17/30 ,  G06F17/50 ,  G06T7/60

CPC classification number: G06F17/30554 ,  G06F17/30386 ,  G06F17/30525 ,  G06F17/50 ,  G06F17/5086 ,  G06F2217/04 ,  G06T2207/10028 ,  G06T2210/12

Abstract: The invention notably relates to a computer-implemented method for querying a database that comprises 3D modeled objects that represent mechanical parts. The method comprises the steps of providing a query that includes a thickness criterion and returning, as results of the query, respective 3D modeled objects of the database based on an extent to which the respective 3D modeled object has a thickness that respects the thickness criterion. The thickness of the respective 3D modeled object is proxied by a thickness signature that corresponds to the evaluation of a function of the type ƒ(x)= a ( b + cx 3 2 ) . Such a method improves the querying of a database that comprises 3D modeled objects that represent mechanical parts.

Abstract translation: 这种方法改进了对代表机械部件的包含3D建模对象的数据库的查询。

公开(公告)号：US20160350335A1

公开(公告)日：2016-12-01

申请号：US15160020

申请日：2016-05-20

Applicant: Dassault Systemes

Inventor： Remy Rorato

IPC: G06F17/30 ,  G06T17/20

CPC classification number: G06F17/30259 ,  G06F17/30277 ,  G06F17/50 ,  G06T17/20

Abstract: A computer-implemented method and system for querying a database that comprises 3D modeled objects that represent mechanical parts. The method or system provides a query that includes a likeness criterion relative to the value of a predetermined shape descriptor for an input 3D modeled object. A next step returns, as results of the query, respective 3D modeled objects of the database based on an extent to which the value of the predetermined shape descriptor for the respective 3D modeled object respects the likeness criterion. The value of the predetermined shape descriptor for a respective 3D modeled object includes a set of axis systems that are trihedral. The likeness increasingly depends on an extent to which sets of axis systems match each other modulo a same similarity transformation. Such a method and system improves the querying of a database that comprises 3D modeled objects that represent mechanical parts.

Abstract translation: 一种计算机实现的方法和系统，用于查询包含表示机械部件的3D建模对象的数据库。 方法或系统提供了一种查询，其包括相对于输入3D建模对象的预定形状描述符的值的相似标准。 基于对于相应3D建模对象的预定形状描述符的值对应于相似标准的程度，下一步返回作为查询的结果，数据库的相应3D建模对象。 相应3D建模对象的预定形状描述符的值包括三角形的一组轴系统。 相似度越来越依赖于轴系统集合相互模拟相同相似变换的程度。 这种方法和系统改进了包括表示机械部件的3D建模对象的数据库的查询。

公开(公告)号：US20140354636A1

公开(公告)日：2014-12-04

申请号：US14286952

申请日：2014-05-23

Applicant: Dassault Systemes

Inventor： Remy Rorato ,  Nicolas Duny

IPC: G06T9/00

CPC classification number: G06T9/001 ,  G06T9/00 ,  G06T9/20

Abstract: It is provided a computer-implemented method for compressing a three-dimensional modeled object, wherein the method comprises providing a boundary representation of the modeled object; determining first data, that describe a mapping from the range of a reference function to the range of another function, and second data, that describe a mapping from the domain of the other function to the domain of the reference function which, when composed with the reference function and the mapping from the range of the reference function to the range of the other function, leads to the same result as applying the other function; and replacing in the geometrical data the other function by the first data, the second data and a pointer to the reference function. Such a method improves the compression of a 3D modeled object.

Abstract translation: 提供了一种用于压缩三维建模对象的计算机实现的方法，其中所述方法包括提供所建模对象的边界表示; 确定描述从参考功能的范围到另一功能的范围的映射的第一数据和第二数据，其描述从另一个功能的域到参考功能的域的映射，当与 参考函数和从参考函数的范围到其他函数的范围的映射导致与应用其他函数相同的结果; 并且通过第一数据，第二数据和指向参考功能的指针在几何数据中替换另一功能。 这种方法改善了3D建模对象的压缩。