Precise registration method of damaged part based on improved ICP (Inductively Coupled Plasma) algorithm

The invention discloses a precise registration method of a damaged part based on an improved ICP (Inductively Coupled Plasma) algorithm. The method comprises the steps of carrying out advanced registration to generally adjust two models to correct position by adopting a three-point aligning method; precisely registering by adopting an improved ICP algorithm; combining a corresponding point curvature constraint and a corresponding point distance constraint in the process of precisely registering, and realizing the automatic elimination on damage point cloud by setting the curvature constraint and a distance threshold value, so as to obtain corresponding points of a non-damaged area, realize the precise registering of the non-damage area to obtain the morphology of a damaged area quickly and accurately. The method has the significant effects of taking full account of the change of the surface size and morphology of a damaged part in the process of registering precisely, and ensuring the accuracy of the corresponding point of the registering point cloud by combining the corresponding point curvature constraint and the corresponding point distance constraint.