Personalized false tooth three-dimensional image model registration method and system

The invention relates to the field of three-dimensional image model matching, in particular to a personalized false tooth three-dimensional image model registration method and system, and the method comprises the steps: obtaining a false tooth three-dimensional model and a patient tooth three-dimensional model, and extracting the three-dimensional contour information of the false tooth three-dimensional model; obtaining a highlight factor of each three-dimensional contour point through local space point cloud gray scale information of each three-dimensional contour point; calculating the structural complexity and the local space distribution index of each three-dimensional contour point to obtain the influence degree factor of each three-dimensional contour point; obtaining the candidate degree of each three-dimensional contour point; optimizing the candidate degree of each three-dimensional contour point to obtain an optimized candidate degree; and selecting matching key points, and completing the matching o