During the accuracy registering for scanning point set of complex aviation casting and forging blank part and the CAD model

the vast amounts of point set

lots of model faces and no relevance between the points and CAD model surfaces can bring amounts of calculation for the registration algorithm

and restrict the processing efficiency severely. In order to improve the efficiency of registration

this paper proposes a fast and high accuracy adaptive method to register blank points and CAD model. This method uses registration surface to extract the registration points

and the correspondence between point and surface can be built by the way

and classifies registration surfaces

and then gradually increases quantity of points and surfaces to the precise registration which uses ICP algorithm. Finally

the efficiency and reliability of the algorithm are verified by the instance.