MC-based Iso-surface Smoothing And Merging And Immprovements On 3D Reconstruction

3D reconstruction and visualization can be of important value in medical fields, and it is also the basis of visualization of brain and spine surgery. People have always been in search for better methods which can improve the 3D reconstruction results and, at the same time, speed up 3D interactive rendering process. This is one of the key problems in medical visualization research. This paper studied deeply on 3D reconstruction and visualization and the related methods of computer graphics. Based on the detailed analysis of the MC (Marching Cube) algorithm which is used for extracting Iso梥urface from volume data field, this paper presented a new method of directional smoothing and polygonal merging on the extracted iso梥urface. The directional smoothing method decomposes the iso梥urface into a 3d coordinate field and a vector field, and performs smoothing processing in the vector field. The reconstructed results and the rendered anatomical details are greatly improved. The method of iso梥urface merging presented. According to correct merging principles and threshold value, it transforms the triangle梒omposed iso梥urface into polygon梒omposed iso梥urface. This method greatly speeded up the 3D rendering process without impairing reconstruction effects and anatomical details. Based on the new methods, this paper presented a new way for 3D reconstruction and rendering. Experiments clearly indicated that this new way can greatly improve the results of 3D reconstruction, and at the same time, greatly speed up the 3D rendering process, making it very easy to realize satisfying interactive course on computers.