Objective Early detection and treatment of colon cancer can raise the patient survival rate greatly,and reconstruction of endoscopic colon images can improve doctor's understanding of the structure of colon. We propose a method to reconstruct the colon structure to overcome the weakness of existing methods.Methods The proposed method takes advantage of the prior information that the shape of the colon is tubular.We reconstruct the colon fold by using structure from motion technique,and interpolate the surfa...