The invention discloses a mark point automatic registration method based on
model matching. The method comprises the following steps of (1)obtaining image data containing mark points; (2) constructing a mark
point model; (3) reading in the obtained image data, conducting
anisotropic diffusion filtering on images, and automatically extracting a
skin three-dimensional grid from the images; (4) adopting an ICP
algorithm to be matched with the mark
point model and the
skin three-dimensional grid, and obtaining the coordinate of the center of each mark point on the
skin three-dimensional grid in an image space coordinate
system; (5) adopting the ICP
algorithm to be matched with the center of each mark point of the image space and the center of each mark point of the actual space, obtaining a rotating matrix R and a translational vector quantity T between the image space coordinate
system and the actual space coordinate
system, and completing registration of the mark points. According to the mark
point registration method, the multiple mark points can be rapidly registered, the obtained rotating matrix R and the obtained translational vector quantity T of the image coordinate system and the actual coordinate system are more accurate, manual interference is reduced, the precision of the registration of the mark points is improved, and the mark point automatic registration method has good robustness.