醫療用虛擬實境人機介面發展與應用研究

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姓名

黃煒婷(Wei-Ting Huang) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

醫療用虛擬實境人機介面發展與應用研究
(The Study of Development and Application in human-machine interface for medical virtual reality)

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摘要(中)

現今電腦斷層(Computed Tomography, CT )影像於臨床診斷之應用已相當廣泛，一組序列式CT影像能夠提供病患身體的真實三維狀況，但受限於目前硬體顯示介面，僅能將三維影像轉換為二維才能夠由二維螢幕輸出並顯示。雖然三維成像的影像已可以提供給使用者大略的立體感，但對於醫學領域的使用仍稍嫌不足，不足的主因是無法給予使用者真實的立體感。本研究之研究針對CT影像的顯示，利用立體渲染法將其重建為三維影像，並配合虛擬實境的原理以及搭配立體顯像設備，將傳統的2D醫學影像以3D立體的方式呈現；再針對不同的硬體設備包含資訊手套和空間定位裝置做性能測試，並配合空間定位技術以及相對應的人機介面，共同搭配組合成不同的功用，建構出一套基本的醫療用虛擬實境互動系統，並應用於不同的術前評估範例當中，分別為腦血管病變範例以及骨盆骨折範例。

摘要(英)

Computed Tomography (CT) technology has been extensively used in daily clinical diagnosis as it can provide a series of 2D scans of the human body. However, due to the limitation of cheaper but efficient PC-based software, current diagnosis of CT images is always performed in terms of two-dimensional display. Although three-dimensional imaging technology is available and can offer more realistic display of the images, it is still insufficient for medical applications as the display is still in a two-dimensional mode. The purpose of this study is to develop a human-machine interface for medical virtual reality. We employ volume rendering and stereo display techniques for the display of medical images in a stereo manner. We also integrate data glove and six DOF positioning tracker for providing a virtual reality system for medical applications. We intend to integrate such devices into our software and develop appropriate human-machine interface so that we can manipulate real and virtual objects together. We employ this system to cerebrovascular disease diagnosis and preoperative evaluation of pelvic fracture for demonstrating its capability.

關鍵字(中)

★ 醫學影像
★ 立體顯像
★ 空間定位
★ 虛擬實境

關鍵字(英)

★ Medical image
★ Stereo display
★ three-dimensional positioning device technology
★ Virtual reality

論文目次

第一章緒論 1
1.1 研究背景與動機 1
1.2 文獻回顧 2
1.2.1 虛擬實境在教育訓練上的相關研究 3
1.2.2 虛擬實境在醫學領域上的發展與相關研究 4
1.3 研究目的 9
1.4 研究方法 9
1.5 論文架構 11
第二章硬體設備整合 13
2.1 前言 13
2.2 虛擬實境硬體組成 13
2.3 空間定位器 15
2.3.1 WinTracker 15
2.3.2 3DGuidance trakSTAR 16
2.3.3 訊號分析與比較 20
2.4 資訊手套 44
2.5 投影裝置 48
2.5.1 頭戴式顯示器 48
2.5.2 3DVision之LCD螢幕 48
第三章立體影像顯示與空間定位技術 51
3.1 前言 51
3.2 立體視覺技術 51
3.2.1 產生視差影像 52
3.2.2 色彩轉化技術 52
3.2.3 OpenGL四重緩衝技術 52
3.2.4 透視投影技術 55
3.3 空間定位技術 59
3.3.1 空間定位器座標系 59
3.3.2 座標轉置矩陣 TDCS ? WCS 60
3.3.3 攝影機座標轉置矩陣 63
3.3.4 範例與討論 64
第四章系統整合及範例應用 71
4.1 前言 71
4.2 系統整合 71
4.3 腦血管病變診斷立體顯示與操作範例 73
4.3.1 腦血管病變診斷與操作流程規劃 75
4.3.2 頭殼分析與移除 79
4.4 骨盆骨折診斷立體顯示與操作範例 84
4.4.1 骨盆骨折診斷與操作流程規劃 85
4.4.2 運用Tracker與Glove進行模擬復位 88
4.4.3 運用Tracker與Glove進行植入物模擬放置 91
4.4.4 虛擬復位模擬操作流程 94
4.5 小結 95
第五章結論與未來展望 97
5.1 結論 97
5.2 未來展望 98
參考文獻 99

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指導教授

賴景義(Jiing-Yih Lai)

審核日期

2011-7-20

推文