Research On Digital And Texture Mapping Technology Of Bio-organ Models

Digital technology is one of the active topics in current research and is widely used in many fields. Benefited from the research progress of "Digital Human", the digital 3D models of human organs become easier to be obtained. But research on true color texture mapping on these kinds of 3D models was seldom found in papers. Otherwise, there are a mass of medical teaching models in most schools and hospitals of our country. it's very meaningful to digital these models and put textures on them, which will benefit to multi-media teaching, distance education and setting up virtual surgery platform. For above reasones, this thesis mainly research on digital and texture mapping technology of organ models, meet with the demands of the third dimension rendering.The main research contents and achievements are articulated as follows:1. The integration of QEM tri-mesh simplification algorithm of MITK. A deep-ranging research was done on MITK. The difficulty of data exchange between different data structures was solved. The module of mitkQEMSimplification algorithm was integrated. The simplification of tri-mesh organ models was accomplished.2. Texture registration technology based on outline and registered texture. The registration by using the outline was studied in this paper. A method of using the registered texture in texture registration was proposed. The information shortage of using simply outline in registration was made up. Research on outline feature extraction was progressed. By introduce the Laplacian and Sobel operators, the outline feature and texture feature extraction was realized. A human computer interactive registration was successful done in a OpenGL based visualization platform. The automatic method of texture registration was studied.3. Texture mosaic technology based on partial texture mapping. A rule to mosaic the texture image was introduced, which can be defined as the line of sight most perpendicular with the tri-mesh is the best suitable texture; it can mosaic and register a texture in any direction. The whole operation is very simply and friendly, "what you see, what you gain"; a square indent recursion algorithm was put forward and realized in this platform; the textures assembly into ONE texture was realized,...