Based On The Tomographic Image Sequences, 3d Medical Image Reconstruction

With the development of computer technology and computer graphics, medical imaging technology has a big improvement. To meet doctors' needof the detailed information about patient's body, the research on medical3-D image reconstruction technology has been carried out widely.In this thesis, the theory and method about visualization in scientific computing are introduced and described. Several 3-D rendering methods and their characters are analyzed.Marching Cubes, a kind of surface rendering method, is introduced. Through the experiment on this method, the theory about cutting cubes and constructing isovalue surfaces is discussed.Ray-Casting Volume Rendering and some involved technologies, such as shading model, resampling and mapping, are introduced. A new method ispresented to mend Ray-Casting Volume Rendering. The method is to renderthe region with some thickness, which contains the dividing line between tow different matters. Based on this method, there are tow algorithms to be carried out in our experiment. The new method is proved that it is better than old method in rendering speed and image impression.