The present invention discloses a point-to-
point registration method, which includes Step 1: making a registration plate with a material having good X-
ray transparency, and randomly placing n objects P1, P2,..., Pn capable of extracting and determining coordinates. Step 2: using a C-arm
machine to perform
fluoroscopic imaging, transmitting the captured
fluoroscopic image into a PC, preprocessing the image, and then obtaining the center coordinates C1, C2,..., Cn of the projections of the steel balls in the
fluoroscopic image. Step 3: measuring and obtaining the three-dimensional positions of the centers of the steel balls on the registration plate with any point on the registration plate as the origin, taking the direction perpendicular to the registration plate as the Z direction, such as P1(x1, y1, z1), P2(x2, y3, z2),..., Pn(xn, yn, zn), and mapping P1(x1, y1, z1), P2(x2, y3, z2),..., Pn(xn, yn, zn) to a two-dimensional plane; through the implementation of the present invention, the registration accuracy between the feature points in the perspective view and the feature points in the model is not affected by factors such as the
occlusion of key steel balls and different poses of the model, and both the practicability and applicability are relatively strong, achieving a prominent progress and having certain use value and promotion value.