Method and equipment for registering orthodontic front and back skull side position films

The invention provides a method and equipment for registering orthodontic front and back skull side position films. A computer is adopted to assist skull side position film point marking and contour drawing, and compared with traditional parchment paper drawing, point marking and contour drawing are more convenient and faster, and storage and communication are easier; Computer-assisted angle and linear index measurement is adopted, and compared with manual measurement, errors caused by a measuring instrument and long consumed time in the measurement process, the measurement is more accurate and rapid; An iterative nearest point algorithm with scales is adopted, the problem of scale change caused by different body position and shooting parameter settings is solved, maximum correlation entropy measurement is introduced, noise caused by individual manual punctuation errors is reduced, and the accuracy of a registration result is improved compared with the prior art that only images on naked eyes are basically ov