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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 馬劍清 | zh_TW |
dc.contributor.advisor | Chien-Ching Ma | en |
dc.contributor.author | 吳冠甫 | zh_TW |
dc.contributor.author | Kuan-Fu Wu | en |
dc.date.accessioned | 2023-09-22T17:15:31Z | - |
dc.date.available | 2023-11-09 | - |
dc.date.copyright | 2023-09-22 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-08-11 | - |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/90063 | - |
dc.description.abstract | 數位影像相關法 (Digital Image Correlation, DIC) 為基於影像的一種非接觸式全場量測技術,其具備跨尺度跨領域的優勢。數位影像相關法之核心概念為參考影像中定義一樣板子集合,再至目標影像中搜尋其位置,以此量測待測物之座標、位移、速度、加速度、應變等資訊,搭配迭代演算法,可得到高精度的解。然而其對於影像之變形會有一定的限制,例如旋轉、縮放等。
本論文應用了基於特徵之圖像匹配,以提高圖像變形時之量測精度,並應用平行計算於全場多點量測,以增進全場量測時之計算效能。在實驗部分,本論文進行了懸臂薄板之變形及立體形貌量測,搭配雷射位移計及 Comsol 驗證其精度,以及使用一水桶進行模擬儲油槽等大型結構物之結構檢測,並以敲擊的方式模擬其力學損傷之行為,以全場變形及立體形貌進行結果的呈現。本論文也進行了風扇葉片之三維旋轉立體形貌量測,以模擬風機葉片的旋轉過程。本論文最後進行了橡膠材料的拉伸試驗,並以數位影像相關法進行精度的驗證。 | zh_TW |
dc.description.abstract | Digital Image Correlation (DIC) is a non-contact, full-field measurement technique based on images, which possesses the advantages of cross scales and domains. The core concept of DIC involves defining a subset in the reference image and searching for its location in the target image. This allows for the measurement of coordinates, displacement, speed, acceleration, strain, and other information of the object being measured. Using with iterative algorithms, high-precision solutions can be obtained. However, it has certain limitations in handling image deformation, such as rotation and scaling.
This thesis applies feature-based image matching to improve the measurement accuracy during image deformation and employs parallel computing for full-field multipoint measurement to enhance computational efficiency during full-field measurement. In the experimental part, this thesis conducts deformation and 3D surface measurement of a cantilever thin plate, verifies its accuracy with a laser displacement sensor and Comsol, and uses a bucket to simulate the structural detection of large structures like oil storage tanks. It simulates its mechanical damage behavior by knocking and presents the results through full-field deformation and 3D surface. This thesis also conducts rotational surface measurement of fan blades to simulate the rotation process of fan blades. Finally, this thesis conducts a tensile test on rubber materials and verifies the accuracy using DIC. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-09-22T17:15:31Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2023-09-22T17:15:31Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 摘要 I
Abstract III 目錄 V 圖目錄 IX 表目錄 XIX 第一章 前言 1 1.1 研究動機 1 1.2 文獻回顧 1 1.3 內容簡介 5 第二章 數位影像相關法原理與實驗儀器 7 2.1 數位影像相關法簡介 7 2.1.1 基本原理 7 2.1.2 空間參數 8 2.1.3 樣板子集合與半窗格 8 2.1.4 搜尋子集合與搜尋窗格 9 2.1.5 形狀函數 9 2.2 數位影像相關法搜尋演算法 11 2.2.1 相關係數法 11 2.2.2 相關係數極值搜尋法 13 2.2.3 牛頓拉福森法 15 2.2.4 正向疊加牛頓拉福森法 18 2.2.5 反向合成高斯牛頓法 21 2.3 數位影像相關法種類 24 2.3.1 二維數位影像相關法 24 2.3.2 立體數位影像相關法 25 2.4 實驗儀器介紹 29 2.4.1 數位工業相機 29 2.4.2 數位工業相機鏡頭 29 2.4.3 雷射位移計 30 2.4.4 光纖位移計 30 第三章 提升數位影像相關法精度及計算效能 49 3.1 圖像變形問題 49 3.1.1 二維旋轉問題 50 3.1.2 方法回顧: 更新樣板法 50 3.1.3 方法回顧: 內插法 51 3.1.4 方法回顧: QR內插法 51 3.2 利用特徵圖像匹配改善圖像變形問題 51 3.2.1 圖像匹配簡介 52 3.2.2 基於區域的圖像匹配 52 3.2.3 基於特徵的圖像匹配 53 3.2.4 尺度不變特徵轉換 56 3.2.5 應用特徵圖像匹配於反向合成高斯牛頓法 58 3.3 搜尋精度比較 59 3.3.1 SEM: 剛體平移 59 3.3.2 SEM: 剛體旋轉 60 3.3.3 SEM: 孔洞試片拉伸試驗 61 3.3.4 QRcode旋轉實驗 62 3.3.5 二維平板旋轉實驗 62 3.3.6 三維平板旋轉實驗 63 3.4 利用平行計算提升全場多點計算效能 64 3.4.1 平行計算簡介 65 3.4.2 平行計算應用於全場量測 65 3.5 計算效能實驗 66 3.5.1 C++ 與 Matlab 之 ZNCC 速度比較 67 3.5.2 多核心計算效能比較 67 3.5.3 全場多點計算效能比較 68 3.5.4 二維DIC計算時間分佈 69 3.6 小結 70 第四章 三維全場變形及立體形貌量測 109 4.1 懸臂薄板受力全場面外位移量測 109 4.1.1 立體數位影像相關法計算流程 109 4.1.2 實驗架設與參數設定 111 4.1.3 實驗結果與討論 113 4.1.4 右影像對應點次像素精度問題 114 4.1.5 全場量測中座標轉換之旋轉矩陣計算 115 4.2 水桶裝水之全場面外位移及三維立體形貌量測 117 4.2.1 實驗架設與參數設定 118 4.2.2 實驗結果與討論 119 4.3 變形水桶裝水之全場面外位移及三維立體形貌量測 120 4.3.1 實驗架設與參數設定 121 4.3.2 實驗結果與討論 122 4.4 風扇葉片靜態旋轉全場三維立體形貌量測 123 4.4.1 實驗架設與參數設定 123 4.4.2 實驗結果與討論124 4.5 風扇葉片動態旋轉全場三維立體形貌量測 125 4.5.1 實驗架設與參數設定 125 4.5.2 實驗結果與討論 126 4.6 小結 127 第五章 DIC 與雷射位移計之精密量測 193 5.1 應用數位影像相關法於橡膠材料之拉伸試驗 193 5.1.1 拉伸試驗簡介 193 5.1.2 計算方法介紹 196 5.1.3 實驗架設與參數設定 198 5.1.4 實驗結果與討論 199 5.2 揚聲器之振動量測 201 5.2.1 揚聲器表面單點掃頻量測 201 5.2.2 揚聲器振膜全場掃頻量測 202 5.3 小結 203 第六章 結論與未來展望 225 6.1 結論 225 6.2 未來展望 226 參考文獻 229 | - |
dc.language.iso | zh_TW | - |
dc.title | 應用特徵圖像匹配於數位影像相關法之三維全場形貌及變形量測 | zh_TW |
dc.title | Application of Feature-Based Image Matching for Three-Dimensional Full-Field Surface and Deformation Measurement in Digital Image Correlation | en |
dc.type | Thesis | - |
dc.date.schoolyear | 111-2 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 黃育熙;楊宜恒 | zh_TW |
dc.contributor.oralexamcommittee | Yu-Hsi Huang;Yi-Heng Yang | en |
dc.subject.keyword | 數位影像相關法,基於特徵之圖像匹配,三維立體形貌量測,拉伸試驗, | zh_TW |
dc.subject.keyword | Digital Image Correlation,Feature-Based Image Matching,3D Surface Reconstruction,Tensile Test, | en |
dc.relation.page | 235 | - |
dc.identifier.doi | 10.6342/NTU202303800 | - |
dc.rights.note | 未授權 | - |
dc.date.accepted | 2023-08-12 | - |
dc.contributor.author-college | 工學院 | - |
dc.contributor.author-dept | 機械工程學系 | - |
顯示於系所單位: | 機械工程學系 |
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