研究生: |
翁琪婷 Chi-Ting Weng |
---|---|
論文名稱: |
應用電腦視覺於隧道內定位之特徵點匹配過濾分析 Feature Point Matching Filter Analysis of Localization in Tunnels Using Computer Vision |
指導教授: |
謝佑明
Yo-Ming Hsieh |
口試委員: |
陳鴻銘
Hung-Ming Chen 楊元森 Yuan-Sen Yang 莊子毅 Tzu-Yi Chuang 謝佑明 Yo-Ming Hsieh |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2018 |
畢業學年度: | 106 |
語文別: | 中文 |
論文頁數: | 98 |
中文關鍵詞: | 電腦視覺 、隧道 、定位 、特徵點 、匹配 |
外文關鍵詞: | computer vision, localization, tunnel, feature point |
相關次數: | 點閱:125 下載:11 |
分享至: |
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無論是鐵路、公路、捷運、自行車道、行人專用道或是水利相關設施,因為台灣地形關係,擁有許多隧道。若隧道結構損毀,將會造成許多的問題,甚至是對生命安全的危害。因此,隧道需要定期的維護檢查與紀錄。在定期檢查上,使用行動裝置進行例如照相、錄音、錄影、表單勾選等電子化的記錄之技術已被開發出來,以減輕巡檢人員的負擔。然而,目前仍缺乏在隧道內自動取得位置資訊的技術。
前人建立基於電腦視覺技術於隧道內定位之研究平台,其以電腦視覺利用視差計算隧道內特徵點之空間座標,並根據景物的移動來計算自身之相對移動距離,以達到隧道內定位之目的。本研究對此研究平台進行函式庫更新、功能的擴充及計算方法的改善。
更新後之平台,可以自行搭配組合不定數量之影像處理流程與參數,亦可選擇使用多種特徵點處理之方法與參數,以研究精準的隧道定位演算法。本研究亦開發新的匹配過濾之方法,以濾除不正確的特徵點匹配,藉以減少定位誤差。
Tunnels are part of important civil infrastructure in Taiwan. The consequence of tunnel collapse is devastating and can cost human lives. Tunnels have been regulated to have regular inspections and maintenance. For regular inspections, mobile-device based operations such as taking photos, recording videos, filling electronic forms, etc. have been developed to help reduce burden to inspectors. However, automated localization in tunnels is still lacking.
Former studies have developed a research platform for using computer vision technique for localization in tunnels. The localization involves stereo imaging, feature point identification and tracking. This study updates the research platform by upgrading the used computer vision library, expanding its capabilities, and improving the algorithms.
The updated research platform can customize image processing process with different algorithms and parameters. Feature points can be identified by one of many available feature point extraction algorithms with customizable parameters. The platform can be used to develop precise tunnel localization algorithms. New match-filtering algorithms are also developed in this research in order to remove incorrect stereo pairs to reduce localization errors.
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