专利名称：System and method for high-accuracy
measurement of object surface
displacement using a laser displacementsensor
发明人：David J. Michael,Aaron S. Wallack申请号：US14257628申请日：20140421公开号：US09488469B1公开日：20161108
专利附图：
摘要：This invention provides a system and method for the high-accuracy
measurement of an object's surface displacement at a plurality of measurement pointsusing a laser displacement sensor and a sensor process that corrects for noise and otheraccuracy-reducing factors. A camera assembly with an imager and optics packageacquires images of an object surface, and a laser assembly projects a line on the objectsurface. These tasks can include (a) defining patches of the surface based upon a grid; (b)registering the object and aligning the grid with respect to the object; (c) excluding fromthe analysis of the image, irregular surface features; (d) oversampling one or morepatches to improve overall accuracy; (e) specifying measurement resolution (i.e. in the (x,y z) dimensions), including choosing appropriate pixel sizes and number of measurementsper measurement point; and (f) selecting optimal acquisition/image formationparameters.
申请人：Cognex Corporation
地址：Natick MA US
国籍：US
代理机构：Loginov & Associates, PLLC
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容