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研究生:楊哲丞
研究生(外文):YANG, CHE-CHENG-
論文名稱:基於相位移結構光掃描技術應用於人體表面快速重建
論文名稱(外文):A Phase-Shifting Structure Light Based Scanner Applied to Fast Reconstruct Body Surface
指導教授:姚宏宗姚宏宗引用關係
指導教授(外文):YAU, HONG-TZONG
口試委員:楊智媖洪世凱
口試委員(外文):YANG, CHIH-YINGHONG,SHIH-KAI
口試日期:2017-01-05
學位類別:碩士
校院名稱:國立中正大學
系所名稱:機械工程系研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:77
中文關鍵詞:相位移技術表面重建結構光呼吸追蹤
外文關鍵詞:Phase-shift TechnologySurface ReconstructionStructured LightRespiratory Movement Tracking
相關次數:
  • 被引用被引用:0
  • 點閱點閱:330
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  • 下載下載:5
  • 收藏至我的研究室書目清單書目收藏:1
本研究目的為開發一套非侵入式的呼吸追蹤系統,追蹤患者在進行放射治療時的腫瘤位置,由於腫瘤會隨著呼吸運動在體腔內位移,因此患者需要在正確的時間接受放射線,避免放射治療時攻擊到正常的細胞組織。
本研究利用相位移結構光掃描技術重建人體表面並使用貼附於人體皮膚的標記點(Marker)表示呼吸狀態,Marker會在手術前投影到4D CT的模型上產生虛擬Marker。在呼吸追蹤時,利用人體皮膚上的真實Marker與虛擬Marker進行比對找到最接近的CT模型,藉此得知患者的呼吸狀態以及腫瘤位置是否在預定照射放射線的位置。
本研究所開發的系統在讀取手術規劃的放射角度後可以運用於手術模擬以及教育訓練,此外本研究利用馬達機構實驗動態追蹤Marker的準確性,追蹤結果與理想波形有0.9994的正相關性。

The purpose of this research is to develop a non-invasive respiratory tracking system to track the position of the tumor during radiation therapy. Because the tumor would move with respiratory movement in the body, the patient needs to receive the radiation at the correct time window to prevent the normal cell tissue from getting hurt.
We use the phase-shift technology to reconstruct the skin of the human body with markers attached to the human body. The markers will be projected to the STL skin model from 4D CT to generate virtual markers. While doing respiratory tracking, the system will use the markers on the body to match the virtual markers and find the closest STL model. Such corresponding STL model can be used to find the tumor at the right position for radiation projection.
Our system can read the angles of radiation of surgical planning and use that information in surgical simulation and educational training. Furthermore, we use a motor mechanism to assess the accuracy of the marker tracking. The result shows that the PCC correlation of the tracking was found to be 0.9994 correlation with the ideal waveform.

摘要
Abstract
目錄
圖目錄
表目錄
第一章 緒論
1.1 前言
1.2 研究動機
1.3 研究目的
1.4 文獻回顧
1.4.1 結構光編碼
1.4.2 相位移技術
1.4.3 相位展開
1.4.4 呼吸追蹤系統
1.5 研究方法
第二章 掃描系統校正
2.1 攝影機與投影機模型
2.2 攝影機校正
2.2.1 基本方程式
2.2.2 內部矩陣與外部矩陣估算
2.3 投影機校正
第三章 相位移掃描
3.1 相位移技術原理
3.1.1 三步相位移技術
3.1.2 2+1相位移技術
3.2 相位編碼
3.3 相位展開
第四章 影像處理
4.1 中值濾波 (Median Filter)
4.2 標記點偵測
4.2.1 HSV色彩空間
4.2.2 輪廓偵測
4.2.3 圓點偵測
第五章 三維重建
5.1 三維重建原理
5.2 投影機影像校正
第六章 CT模型資料處理
6.1 網格模型內插
6.1.1 模型變形
6.1.2 資料內插
6.2 模型座標系定位
6.2.1 粗定位
6.2.2 細定位
第七章 研究成果
7.1 三維重建精度
7.2 Marker偵測誤差
7.2.1 靜態誤差
7.2.2 動態誤差
7.3 座標系對齊
7.4 即時呼吸追蹤
7.5 討論
第八章 結論與未來展望
8.1 結論
8.2 未來展望
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