本論文設計並實作了一套以輪廓線為主的三維物件重建系統。在「三維物件重建系統」中，我們將一系列二維影像上的人體器官以輪廓線的方式來表示，透過與使用者之間的互動重建出整個三維物件，藉由3D顯示，幫助使用者以更具體的方式來觀察三維物件的外觀，並進階的對3D物件作切割操作。
在切割3D物件方面，我們提出了兩套切割演算法，其中一套切割演算法內部藉著體素（voxel-based）圖像的協助，來達成大範圍切割3D物件的效果。另一套切割演算法，則直接使用輪廓線（Contour）的重疊，找出切割後新的輪廓線，來達成細部的切割效果。
藉由三維物件重建系統讀取一系列的人體二維剖面圖，在圖上繪製器官或管道的輪廓線並建成三維物件後，便可以擁有許多人體管道資料。而這些管道資料，可以當作我們其它系統的輸入。

We design and implement a contour-based 3D reconstruction system. In the 3D reconstruction system, we present the organs in images with the contours. Through the interaction with users, we can reconstruct the 3D objects according to the user judgments. Therefore, users can observe the 3D objects in a more concrete way by 3D display.
With regard to the 3D object cut, we propose two cutting algorithms including based on the voxel image to cut a 3D object ruggedly and based on using the overlap between the contours and finding the new contour to cut a 3D object slightly.
Users can use the 3D reconstruction system to read a series of 2D human body images and draw contours to reconstruct the 3D objects. Therefore, we can get a lot of data of human body. These data are the input of the Body Navigation system.

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