Research On Key Technologies Of The Artificial Joint Three-dimensional Modeling

The artificial joint replacement is a common surgical procedure in modern medic-ine. By three-dimensional reconstruction of the medical images artificial joint, whichcan help doctors to visually analyze and quantitative research the joint organization, todevelop accurate medical plan and choose the best match prosthesis; By observing thegap of the stoperative prosthesis and bone and calculating the contact area of the stope-rative prostesis and bone, which can help to determine the stability of the prosthesis.Therefore, high-precision three-dimensional reconstruction has a very important signi-ficance for the prosthesis replacement of artificial joints.The main work is a high-precision three-dimensional reconstruction for the artifi-cial joint, which interslice interpolation method of research is the focus of this article.first reviews several typical layer interpolation algorithm, and introduces the basic pri-nciples of these algorithms and their advantages and shortcomings. Based on thesealgorithms, we design the corresponding improvement methods. The main work of thispaper is as following:Fistly. Considering the shortcomings of the existing interpolation methods, a newinterpolation algorithm based on shape and grey-level was proposed. This method bas-ed on shape interpolation, and uses the interpolation point and the positional relations-hip of the regional contours to find the corresponding point, combined with theregional average gray value interpolation method. The experimental results show thatthe algorithm can improve the quality of the interpolation image.Secondly. According to medical tomography images of human tissue structuralcharacteristics and the correlation between the pixels, a corresponding pixel chassifica-tion interslice interpolation algorithm was designed. The corresponding pixel was clas-sified by their similarity, then selection the different interpolation algorithms to inter-polate for the various points. The experimental results show that the algorithm whichcan retain the organizational structure characteristics and significantly reduce the exec- ution time of the algorithm, improves the accuracy and efficiency of image interpolate-on. The three-dimensional reconstruction results have improved significantly.Thirdly. Researching on the three-dimensional rendering algorithm. Address theneeds of the three-dimensional reconstruction of the artificial joint, by Experimentalcomparative analysis of the correlation algorithm; we select the drawing of the three-dimensional reconstruction algorithm suitable for artificial joints.Lastly, using the above technology, the development model of the VTK (Visualiz-ation Tool Kit) and OpenGL, we designed and implemented an artificial joint three-di-mensional reconstruuction system in the VC++6.0environment.