An Auto-registration Algorithm for Chinese Digital Human Anatomy Image Database

Because of the existence of many different types of distortion in the process of taking photos when generating the true_color 2D slides from cryosections of the human cadavers for Chinese digital human image database,the uniformity of projection parameters for each slide can not be assured.Through analysis of the model for camera shoot and elements of distortion, this paper proposed an auto_registration algorithm based on 2D projective transformation.First,seek the approximate region of locating rod for each slides using inherit method and obtain the center coordinate of locating rod using morphology operation.Then,according to the base coordinate of locating rod,gain the coefficients of projective transformation.At last,generate ideal slides with uniformity of projection parameters using image conversion.This algorithm is of importance for the preprocessing of original digital human database and is expected to provide a precise 3D database for secondary development of database,image segment,reconstruction and digital anatomy.