Method for comparing 3d representations

A 3D representation comparison method, comprising:

• according to multiple linear data of a corresponding layer of a first 3D representation and multiple linear data of a corresponding layer of a second 3D representation, determining a first deformation of the corresponding layer of the second 3D representation relative to the corresponding layer of the first 3D representation;
• according to the multiple linear data of the corresponding layer of the first 3D representation, the multiple linear data of the corresponding layer of the second 3D representation, and the first deformation, generating multiple transformation matrices configured to transform the corresponding layer of the second 3D representation into multiple transformed layers, wherein multiple second deformations of the multiple transformed layers relative to the corresponding layer of the first 3D representation are less than the first deformation;
• selecting a specific transformation matrix from the multiple transformation matrices to perform a transformation to generate a specific transformed layer of the multiple transformed layers;
• and
• comparing the specific transformed layer with the corresponding layer of the first 3D representation to find a difference feature between the specific transformed layer and the corresponding layer of the first 3D representation.