Improved Algorithm of Two-Step Texture Mapping

The process of two-step texture mapping is composed of S mapping and O mapping.As the conventional S mapping algorithm inevitably produces discontinuous textures on the media surface,the realistic effect is badly damaged.The media surface was divided into two symmetrical parts,and the texture plane was also separated into two parts which were symmetrically mapped onto the two parts of the media surface using the method of preserving equal ratio of areas.The area nearby the joint was smoothed using the weighted interpolation algorithm so as to sew the two textures without joint lines.The texture rendered by the following O mapping is continuous on all the surfaces of the object and has less distortion.