Author(s): WU Guan-xiong, SUN Jian-peng
Pages: 75-80
Year: 2016 Issue:  8
Journal: Journal of Tianjin Vocational Institutes
Keyword:  reverse engineering; non-contact measurement; point cloud data; pretreatment;
Abstract: Non-contact point cloud data acquisition are widely used in the field of reverse engi‐neering ,industrial measurement , and acquisition of product point cloud data by grating projection method has become a research hotspot .The data merging is realized by merging the multiple scan data with method of coordinate rotation to ensure completeness of product information .It combines with uni‐form grid method and non -uniform grid method for streamlining and partial re -streamlining of the acquisition of the point cloud data .It is proposed to combine the curve examination method and differ‐ence of chord heights method to realize data de -noising .The theory is verified through the example of the impeller ,which improves the integrity and accuracy of product data and provides reference for prod‐uct data acquisition .