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題名 旋翼UAS影像密匹配建物點雲自動分群之研究
Automatic clustering of building point clouds from dense matching VTOL UAS images作者 林柔安
Lin, Jou An貢獻者 邱式鴻
Chio, Shih Hong
林柔安
Lin, Jou An關鍵詞 影像密匹配
無人機系統
Mean shift分群法
dense image matching
Unmanned Aerial System (UAS)
mean shift clustering日期 2015 上傳時間 1-十月-2015 14:23:04 (UTC+8) 摘要 三維城市模型之建置需求漸趨繁多,可提供都市規劃、城市導航及虛擬實境等相關應用,過去研究多以建置LOD2城市模型為主,且較著重於屋頂結構。近年來,逐漸利用垂直影像及傾斜影像作為原始資料,提供建物牆面之建置,並且,隨著無人機系統(Unmanned Aircraft System, UAS)發展,可利用其蒐集高解析度且高重疊垂直及傾斜拍攝之建物影像,並採影像密匹配技術產製高密度點雲,進而快速取得建物包含屋頂及牆面之三維資訊,而這些資訊可進一步提供後續建置LOD3建置層級之模型,而在建置前,首先須對資料進行特徵分析,萃取特徵點、線、面,進而提供建置模型所需之資訊。因此,本研究期望利用密匹配點雲,計算其點雲特徵,並採用Mean Shift分群法(Comaniciu and Meer, 2002)萃取建物點雲資訊,並提供一最佳分群策略。首先,本研究將以UAS為載具,設計一野外率定場率定相機,並蒐集建物高重疊UAS影像密匹配產製高密度點雲,針對單棟建物高密度點雲,實驗測試點雲疏化程度後,依據疏化成果計算點雲特徵,並以此批點雲資料實驗測試Mean shift分群法(Cheng, 1995)中之參數,後設計分群流程以分離平面點群及曲面點群,探討分群成果以決定最佳分群策略。實驗結果顯示本研究提出之分群策略,可自動區分平面點群及曲面點群,並單獨將平面點群分群至各牆面。
Unmanned Aerial System (UAS) offer several new possibilities in a wide range of applications. One example is the 3D reconstruction of buildings. In former times this was either restricted by earthbound vehicles to the reconstruction of facades or by air-borne sensors to generate only very coarse building models. UAS are able to observe the whole 3D scene and to capture images of the object of interest from completely different perspectives.Therefore, this study will use UAS to collected images of buildings and to generate point cloud from dense image matching for modeling buildings. In the proposed approach, this method computes principal orientations by PCA and identifies clusters by Mean shift clustering. 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Retrieved August 28, 2009 from USGS on the World Wide Web:http://calval.cr.usgs.gov/digital_aerial_imaging_quality_assurance.php 描述 碩士
國立政治大學
地政研究所
102257030資料來源 http://thesis.lib.nccu.edu.tw/record/#G0102257030 資料類型 thesis dc.contributor.advisor 邱式鴻 zh_TW dc.contributor.advisor Chio, Shih Hong en_US dc.contributor.author (作者) 林柔安 zh_TW dc.contributor.author (作者) Lin, Jou An en_US dc.creator (作者) 林柔安 zh_TW dc.creator (作者) Lin, Jou An en_US dc.date (日期) 2015 en_US dc.date.accessioned 1-十月-2015 14:23:04 (UTC+8) - dc.date.available 1-十月-2015 14:23:04 (UTC+8) - dc.date.issued (上傳時間) 1-十月-2015 14:23:04 (UTC+8) - dc.identifier (其他 識別碼) G0102257030 en_US dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/78777 - dc.description (描述) 碩士 zh_TW dc.description (描述) 國立政治大學 zh_TW dc.description (描述) 地政研究所 zh_TW dc.description (描述) 102257030 zh_TW dc.description.abstract (摘要) 三維城市模型之建置需求漸趨繁多,可提供都市規劃、城市導航及虛擬實境等相關應用,過去研究多以建置LOD2城市模型為主,且較著重於屋頂結構。近年來,逐漸利用垂直影像及傾斜影像作為原始資料,提供建物牆面之建置,並且,隨著無人機系統(Unmanned Aircraft System, UAS)發展,可利用其蒐集高解析度且高重疊垂直及傾斜拍攝之建物影像,並採影像密匹配技術產製高密度點雲,進而快速取得建物包含屋頂及牆面之三維資訊,而這些資訊可進一步提供後續建置LOD3建置層級之模型,而在建置前,首先須對資料進行特徵分析,萃取特徵點、線、面,進而提供建置模型所需之資訊。因此,本研究期望利用密匹配點雲,計算其點雲特徵,並採用Mean Shift分群法(Comaniciu and Meer, 2002)萃取建物點雲資訊,並提供一最佳分群策略。首先,本研究將以UAS為載具,設計一野外率定場率定相機,並蒐集建物高重疊UAS影像密匹配產製高密度點雲,針對單棟建物高密度點雲,實驗測試點雲疏化程度後,依據疏化成果計算點雲特徵,並以此批點雲資料實驗測試Mean shift分群法(Cheng, 1995)中之參數,後設計分群流程以分離平面點群及曲面點群,探討分群成果以決定最佳分群策略。實驗結果顯示本研究提出之分群策略,可自動區分平面點群及曲面點群,並單獨將平面點群分群至各牆面。 zh_TW dc.description.abstract (摘要) Unmanned Aerial System (UAS) offer several new possibilities in a wide range of applications. One example is the 3D reconstruction of buildings. In former times this was either restricted by earthbound vehicles to the reconstruction of facades or by air-borne sensors to generate only very coarse building models. UAS are able to observe the whole 3D scene and to capture images of the object of interest from completely different perspectives.Therefore, this study will use UAS to collected images of buildings and to generate point cloud from dense image matching for modeling buildings. In the proposed approach, this method computes principal orientations by PCA and identifies clusters by Mean shift clustering. Analyze the factors which can affect the clustering methods and try to decrease the use of threshold, and this result can cluster the façade of buildings automatically and offer the after building reconstruction for LOD3. en_US dc.description.tableofcontents 謝誌 I摘要 IIAbstract III目錄 IV圖目錄 VI表目錄 IX第一章 緒論 1第一節 研究動機與目的 1第二節 論文架構 4第二章 文獻回顧 6第一節 建物模型重建方法 6一、 建物重建之策略面 6二、 建物重建之資料面 8第二節 點雲處理 11一、 光達點雲處理 11二、 密匹配點雲處理 15第三節 分群法 17一、 群集分析 18二、 分群法於建物重建方面之應用 20第四節 小結 22第三章 研究方法與理論基礎 24第一節 點雲產製 26一、 相機率定 26二、 影像密匹配 29第二節 點雲前處理 29一、 點雲疏化 30二、 點雲特徵萃取 30第三節 點雲分群 33一、 Mean shift分群法 33二、 分群參數 35三、 最佳分群策略之探討 35第四章 實驗成果與分析 38第一節 點雲產製 38一、 相機率定 38二、 影像密匹配 40第二節 影響分群之因素 43一、 點雲疏化 45二、 分群參數之探討 50三、 最佳分群策略之探討 59第三節 最佳分群策略之分群成果 69第五章 結語與建議 78參考文獻 80 zh_TW dc.format.extent 6678592 bytes - dc.format.mimetype application/pdf - dc.source.uri (資料來源) http://thesis.lib.nccu.edu.tw/record/#G0102257030 en_US dc.subject (關鍵詞) 影像密匹配 zh_TW dc.subject (關鍵詞) 無人機系統 zh_TW dc.subject (關鍵詞) Mean shift分群法 zh_TW dc.subject (關鍵詞) dense image matching en_US dc.subject (關鍵詞) Unmanned Aerial System (UAS) en_US dc.subject (關鍵詞) mean shift clustering en_US dc.title (題名) 旋翼UAS影像密匹配建物點雲自動分群之研究 zh_TW dc.title (題名) Automatic clustering of building point clouds from dense matching VTOL UAS images en_US dc.type (資料類型) thesis en dc.relation.reference (參考文獻) 王正忠,2002,「以近景攝影測量進行模型式建物重建」,成功大學測量工程學系學位論文:台南。王淼,2011,「光達點雲區塊化」,國立成功大學測量及空間資訊學系博士論文:台南。中華民國航空測量及遙感探測學會,2014,「建立航遙測感應器系統校正作業4年總報告(100至103年)」,內政部國土測繪中心委託工作總報告。王蜀嘉、曾義星,2003,「高精度及高解析度數值地形模型測製規範」,內政部委託工作報告。王聖鐸,2005,「以浮測模型理論萃取三維空間資訊-以建物重建為例」,『航測及遙測學刊』,12(4):489-507。李孟儒,2011,「利用近景影像提高三維建物模型之細化等級」,國立中央大學土木工程學系碩士論文:桃園。沈柏琦,2007,「利用中值平移分類法作點雲之模型重建」,國立成功大學測量及空間資訊學系碩士論文:台南。李硯婷,2013,「空照影像密匹配之效能與品質」,論文發表於〈測量及空間資訊研討會〉,國立交通大學:新竹,民國102年8月29日至30日。林耿帆,2012,「以物件為基礎之光達點雲分類」,國立台灣大學土木工程學系碩士論文:台北。洪祥恩,2011,「以地面及空載光達點雲重建複雜物三維模型」,國立中央大學土木系碩士論文:桃園。施凱倫,2014,「利用測繪車影像萃取道路標誌重建細部道路模型」,國立中央大學土木系碩士論文:桃園。陳英煥,2007,「空照數位像機拍攝高重疊影像匹配高密度點雲」,國立成功大學測量及空間資訊學系碩士論文:台南。高崇軒,2011,「以多重疊近景影像萃取牆面三維線段之研究」,交通大學土木工程系所學位論文:新竹。黃世涵,2012,「以最小二乘平面套合法進行空載與車載光達點雲套合」,交通大學土木工程系所學位論文:新竹。曾憲雄、蔡秀滿、蘇東興、曾秋蓉、王慶堯,2006,『資料探勘』,台北:旗標出版股份有限公司。鄭源松,2009,「改良式平均移動法於多目標影像追蹤之即時嵌入化實現」,交通大學電機與控制工程研究所學位論文:新竹。蔡依庭,2012,「UAV 航拍影像點雲產生DSM之研究」,臺北大學不動產與城鄉環境學系學位論文:台北。劉嘉銘,2005,「光達點雲資料特徵萃取之研究」,成功大學測量及空間資訊學系學位論文:台南。賴泓瑞,2009,「以模型樣版為基礎之建物三維點雲建模演算法」,成功大學測量及空間資訊學系學位論文:台南。藍裕翔,2014,「航照影像特徵輔助之半全域匹配於數值地表模型建立」,國立中央大學土木系碩士論文:桃園。Becker, S. and Haala, N., 2007, “Refinement of Building Fassades by Integrated Processing of LIDAR and Image Data”, International Archives of Photogrammetry, Remote Sensing and Spatial Information Science, 36: 7-12.Bertram, T. 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