Research On Texture Mapping Technology

With development of the computer technology, the requirement of the quality and speed of the computer graphics is fast increasing. Texture mapping which can enhance the realistic of graphics immensely while entailing only a relative small increase in computation had been noticeable.Based on the summarizing of the algorithms of subdivision surface by Catmull and two-part texture mappings by Biers, this papers goes deeply into features of local texture mapping and the exiting problem, two kinds of local texture mapping methods are presented according to different topology surface. For regular topology surface, intermediate surface local texture mapping are used; for irregular topology surface, subdivision surface local texture mapping are used. So different topology surface using different texture mapping methods can solve the contradiction between texture effect and processing speed when they are dealt with by single method. The three judge conditions of texture distortion in the process of mapping onto the sphere surface are discussed and the exiting algorithms of mapping are analyzed, the new algorithms of mapping onto the sphere surface are presented. In order to enhance the realistic of graphics, a new function of wood texture is presented. OpenGL is also introduced in this papers and some realization examples of texture mapping based on OpenGL under the environment of VC++ and POV-RAY are presented in some chapters.