| 摘要 |
A method and system for visualizing deviations on an actual surface (10) fro m a nominal, or designed, surface utilizes a system and method for mapping the spatial (e.g. x, y and z) coordinates of the actual surface (10) into a computer (13), comparing the mapped actual surface (10) to the nominal surfa ce to produce a three-dimensional distribution of deviation values (D), processing this distribution into a topographical pattern (34) of multiple contours or areas (34a ... 34n), each contour or area having the same, or generally the same, deviation value (D), and optically projecting this topographical pattern (34) onto the actual surface (10) in registry with the initial surface mapping to provide a display of the surface deviations (D) directly on the actual surface (10). The deviations are measured along a direction D normal to the actual surface so that the three-dimensional distribution is given in x, y, D coordinates. The optical projection is preferably a laser projection (38). The mapping and projection onto the actu al surface (10) are made, and coordinated with one another, with respect to thr ee reference points (32) on the surface (10).
|
