The rapid detection of the large complex surface was researched with the development of China's manufacturing industry. A industrial close-range photogrammetry new detection Method was put forward based on the analysis of three-dimensional optical measurement principle. The experiment results verify that the accuracy of the three-dimensional optical measurement system independently developed by Xi'an Jiao Tong University meets the Engineering requirements. The main characteristics of large workpiece can be clearly measured and the detection method can be easily used at the production site.

In recent years, more and more class-A surfaces are adopted for product processing, both in the traditional industries and new industries, which proposes high requirements for the detection technique of product. This article describes the method of size detection in detail. Combining with the principle of reverse engineering, the XJTUOM and XJTUDP systems are used for the 3D digital measurement and design of the large sculpture. The digital detection technology combined with computer aided tools will have a more widespread and profound application in reverse engineering.