本研究的重點在於將一張張二維斷層影像,以三角網格的方式來達到重建的目標,並且輸出快速成型機器能夠讀取的STL檔。 程式中是以3D矩陣資料型式來建立所有的斷層影像,有了這些灰階資料後,必須還要先經過一些簡單的影像處理,此時除了可以去除掉影像的雜訊,還可以擷取或加強影像中重要的部份,研究中是以3維影像處理的概念,來對灰階資料做處理的動作,爾後,則是再把這些灰階資料,以三角網格的方式來達到三維重建的目標,本文中開發出三角錐網格重建法,以及兩個網格重建的演算法則,分別為數學模式尋邊法和右手定則尋邊法,在最終的程式裡頭,三角錐網格重建法的部份,是以1個cube切割為6個三角錐後,再將每個三角錐配合右手定則尋邊法,成功的建立出所有的三角網格。本研究證明所開發的3維建模法,相較於文獻中所得知的Marching Cube網格重建法,的確達到有效簡化Marching Cube網格重建法過於繁雜而且不規律的缺點。
The purpose of the research is to improve the defect of 3D untouching optical measuring system.The measuring system is hard to catch the digital data while the shape of measured objects is too complicated.So our team would like develop an innovative measuring system.First our program would make all CT images convert to the type of 3D matrix data.These 3D matrix data have to be processed in order to remove the noise of images and catch or enhance the important parts of images.Our research utilizes the technique of 3D image processing to process all digital data.Then next progress is to reconstruct triangle meshes.We develop a pyramid triangle method and two algorithms of reconstructing meshes.Last our method is successful in constructing all triangle meshes and improves the defect of irregular types of Marching Cube method efficiently.