Curved surface gridding system and method

Abstract

The invention discloses a curved surface gridding system and a curved surface gridding method. The method comprises the following steps of acquiring sampling points, i.e. boundary line sampling points, of a boundary outline of an object to be detected; constructing a boundary point chain list according to the acquired boundary line sampling points; acquiring sampling points of a curved surface of the object to be detected, and constructing a curved surface sampling point queue; inserting the sampling points in the boundary point chain list into the curved surface sampling point queue to acquire a plurality of bounding boxes; acquiring cross points between a V straight line and the boundary outline of a parameter plane of the curved surface of the object to be detected, wherein the V straight line is the straight line parallel to the V direction of the parameter plane; and forming a triangle by using the boundary line sampling point, the curved surface sampling point and the cross point in each bounding box. By the system and the method, gridding data of a CAD (computer aided design) curved surface model of the object to be detected can be simplified.

Description

technical field [0001] The invention relates to an image measurement system and method, in particular to a curved surface meshing system and method. Background technique [0002] In the three-dimensional measurement, the CAD surface model (3D model of the object to be measured) is mainly used in stylus simulation, offline programming, motion control and image measurement, and these applications require the CAD surface model to do dynamic transformations such as fast movement, scaling and rotation . However, in the conventional CAD surface model meshing processing method, the amount of data after meshing exceeds dozens or hundreds of times of the actual need, resulting in an excessive amount of calculation for the dynamic transformation of the CAD surface model, which makes The whole measurement process will become slow, and more serious consequences may not be applicable. Contents of the invention [0003] In view of the above, it is necessary to provide a surface meshin...

AI Technical Summary

Problems solved by technology

However, in the conventional CAD surface model meshing processing method, the amount of data after meshing exceeds the actual need by tens or hundreds of times, resulting in an excessive amount of calculation for the dynamic transformation of the CAD surface model, which makes The entire measurement process will become slow, and more serious consequences may not be applicable