| in process of the fast takes shape, you must consider to very many factors. This article mainly was made of some analyses and the discussion in the three dimensional examination-technology and the reversion project error analysis technology. The data survey is most important stage in the reversion project, This article analyzed and compared with the common several measuring technique in the reversion project, and introduced emphatically and analyzed primarily data acquisition way and it's the principle by the optical measurement technology. The survey data quality was deciding directly whether the following digitized model does return to original state in the error control scope. This article carry on the detailed analysis in carried on the error to three coordinates measuring engines and the structure light measuring instrument which in the data acquisition process produced to, and proposed the corresponding solution, left the precision for the final structure to be high, the quality good CAD model has laid the foundation. Proposed the multi-objectives parameters optimization method regarding survey data localization question in this article, compares with the traditional method it may compare earth to reduce the data splicing error. Examine the theory in the reversion project theory and the error in the foundation, regard reversion project software Imageware and CAD/CAM software UG as a method, Studied the heavy construction curved surface error to examine the technology, it has produced several typical curved surface components error digitization examination concrete realization method, and compares with the traditional examination method, this method increased the complex curved surface components examination precision and the examination efficiency, can satisfy the precise processing the complex spare part high accuracy examination request, Regarding the realization product on-line examination automation, the flexibility, the digitization have the important...
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