Artificial Joint 3-Demensional Reconstruct System Research Based Medical Images

Artificial Joint Reconstruction System based Medical Image is a typical multi-subjects field. It involves medical image process, three-dimensional reconstruction and virtual bionic manufacturing, etc. This kind of matching artificial joints are very helpful for reducing all kinds of syndromes on patients caused by transpositional operations. At the same time, successful three-dimensional reconstruction technology on medical image is widely used in clinic medical diagnosis and operation layout. So this research is very important in both academic and practical significance.Since current CT machines are equipped with DICOM interface and their data can be output as data files, we may directly take the original CT data files produced by CT machines as the source of data. This article investigates the part of file format in DICOM protocol and realizes OICOM files' function of decoding.The subdivision on bone organization's image is the premise of accuracy of model reconstruction. This article discusses some classic algorithm of smoothing. We may get rid of part of noise disturbance by some smoothing process on image data. Aiming at the characteristics of CT files, we rise up K-mean clustering subdivision to obtain profile, which takes CT value as character of clustering. First, we carry out the process of window frame and window level to strengthen the objects' characteristics. And then we carry out treatment of clustering subdivision, the images was divided into different areas. The profile of objection, made up by discrete points, could be obtained by applying algorithm of profile tracking. Because of the complexities of the figure of bone organization's border, we adopt both the length of arc and curvature to choose character control points, so that we can take into account of both character control points' equality and their accuracy. After comparing several kinds of spline curve, we discuss the reverse method of three-degree Uniform B-spline in detail. We take the chosen character points as the control points to reverse and realize profile vectorization. According to the space between sections obtained from CT files, we rearrange all the sections' data to form a regular three-dimensional data field.Besides, we investigate the key technologies in three-dimensional reconstruction, discuss several kinds of main reconstructing algorithm, and analyze the basic principle and algorithm of Marching Cubes in detail. Because of the large quantity of data and low speed of display, we adopt the algorithm of profile tracking to find cubes which at edge, thus reducing the number of cubes. And then, in order to reduce computation, we take themidpoint of cube's edge; instead of the point by three-degree interpolating calculate, as theacme of triangle.At last, this article introduces some relevant details of Artificial Joint Reconstruction System based Medical Image. The system adopts the management mode which takes project management as the key point and all the functions can parallel work in the system,. Based the OPP, analyzing all the data in the system and adopts structure of hierarchy to organize die data. It also establishes corresponding data structure and encapsulates the data into classes.