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題 名 | Feature Recognition and Evaluation of Volumetric Solid Using Boundary Pointers=使用邊界指標辨識及評估容積實體的形狀特徵 |
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作 者 | 蔡明達; 葉怡德; 謝銘勳; | 書刊名 | 中原學報 |
卷 期 | 31:3 2003.09[民92.09] |
頁 次 | 頁251-261 |
分類號 | 410.1644 |
關鍵詞 | 形狀特徵辨識及評估; 容積視覺化; 容積操作; 計算機圖學的醫學應用; Feature recoginition and recognition; Volume visualization; Volume manipulation; Computer graphics in medicine; |
語 文 | 英文(English) |
中文摘要 | 本論文提出一辨識及評估容積實體之形狀特徵的 方法。我們在每一容積素上使用邊界指標去記錄邊 界,藉此容易地獲得實體在每一容積列的範園。藉由 比較鄰近列的實體範園,我們的演算法可辨識凹、 凸、洞、海峽、分離等形狀特徵,也評估一些有用的 特性如特徵的寬及厚度和特徵間的實體厚度。我們也 發展切割、分裂、結合、和移動等容積實體演算中維 持邊界指標一致性的演算法。所以也可辨識及評估演 算後的形狀特j紋。而我們用一醫學臨床例:脊椎骨折 來展示我們的方法可辨識脊椎骨的各項特徽,及評估 有用於脊椎骨折的診斷及手術計劃的特徵特性。 |
英文摘要 | This paper proposes a feature recognition and evaluation method for volumetric solids. Two boundary pointers on each voxel record solid boundaries, thus the extents of a solid along every voxel row can be easily obtained using the pointers. We develop feature recognition algorithms to extract the convex, concave, hole, strait and separate features on a volumetric solid by comparing the solidextents of neighboring voxel rows. U seful properties such as the thickness and width of a feature and the solid thickness of inter-features are evaluated. We also develop algorithms to maintain the consistencies of the boundary pointers during volume manipulations including the cut, tear join and repostion on a volumetric solid, thus the feature recognitions and evaluations are effective for the manipulated solid. A fracture spine clinical example demonstrates the feasibility of this method in recognizing various features ofthe Splnal bone and evaluating useful feature propertiers for the diagnosis and sugical planning of the fracture spine |
本系統中英文摘要資訊取自各篇刊載內容。