| dc.contributor.advisor | 何瑁鎧 | zh_TW |
| dc.contributor.author (作者) | 賴易進 | zh_TW |
| dc.creator (作者) | 賴易進 | zh_TW |
| dc.date (日期) | 2006 | en_US |
| dc.date.accessioned | 17-九月-2009 13:59:02 (UTC+8) | - |
| dc.date.available | 17-九月-2009 13:59:02 (UTC+8) | - |
| dc.date.issued (上傳時間) | 17-九月-2009 13:59:02 (UTC+8) | - |
| dc.identifier (其他 識別碼) | G0093753025 | en_US |
| dc.identifier.uri (URI) | https://nccur.lib.nccu.edu.tw/handle/140.119/32660 | - |
| dc.description (描述) | 碩士 | zh_TW |
| dc.description (描述) | 國立政治大學 | zh_TW |
| dc.description (描述) | 資訊科學學系 | zh_TW |
| dc.description (描述) | 93753025 | zh_TW |
| dc.description (描述) | 95 | zh_TW |
| dc.description.abstract (摘要) | 在資訊科技爆炸的時代，所有的資料都要求能數位化，以便利用資訊科技對數位資料進行分析、整理與應用。對於都市規劃而言，建立數位城市模型即成為目前的重要課題之一。建立數位城市模型中間最困難的步驟之一，在於處理並數位化古老的紙本地籍資料與建築物平面圖或手繪建築物之地圖，然後進行資訊整合，以建立基本的城市三度空間模型，進而利用更精準的測量技術，來建立精確的數位城市模型。然而要以人工處理並將上述資料數位化來製作基本的三度空間模型，秏時費工且成本太高。有鑑於此，本篇論文提出一套自動化的處理方法，針對附有樓層高度的紙本建築地圖或手繪地圖進行自動化處理，從而建立基本的三度空間模型，作為建立數位城市模型的初步處理。我們先利用文字辨識的技術對建築物進行分析、擷取並判斷地圖中屬於建築物高度的文字資料。其次利用不同的演算法，對地圖進行細化及骨架粹取，並找出地圖上組成建築物的關鍵節點，然後對節點分群，以區分並判斷不同的建築物，進而建立地圖上各個建築物的平面模型圖。最後將每棟建築物的高度資料及其相對應的平面模型圖加以整合，自動產生該地圖的三度空間模型。我們隨機選取一張台北地區之建築平面圖以及學校平面圖來檢驗我們提出的方法，測試的結果顯示，我們的方法都能成功的將這些平面圖，自動建立出原圖基本的三度空間模型，可以作為未來建立城市數位模型之參考。 | zh_TW |
| dc.description.abstract (摘要) | In the era of information explosion, digital archiving every piece of information becomes a must in order to organize, process, and analyze this information and make further use of the information. Hence, constructing a cyber city model is one of the major issues in urban planning.One of the most difficult steps in constructing a cyber city model is to process and digitize the ancient cadastral information as well as the architecture sketches or the hand drawing maps. By combining this information, we could construct an early stage three dimensional model for the city that would help us in constructing the final model for the cyber city. However, manually processing this information is not cost effectively and automatic processing them might reduce the construction cost dramatically. In this paper, we propose an automatic processing mechanism that could digitize the architecture sketches or the hand drawing maps automatically. Our mechanism will produce an early stage three dimensional model for the specified area that will eventually lead to the construction of a more accurate three dimensional model for the entire city.After the sketches or the maps were scanned, as bitmap images, into the computer, we start with analyzing the architecture sketches and extract the elevation information using traditional methods of character recognition. Then, we use various algorithms to thinning and to extract the skeleton of the image. The critical nodes of each building in the images were identified, isolated, and used to construct the base of each building in a planar diagram. Finally, the elevation information is used along with the planar diagram just constructed to generate an early stage three dimension model for the specified area.We randomly choose an architecture sketch of Taipei City and our campus map to verify our mechanism. The results show that our method could produce the corresponding three dimensional models successfully. These models could be used and help us to construct a more accurate three dimensional model for the entire city. | en_US |
| dc.description.tableofcontents | 第一章 緒論 11.1前言 11.2問題描述 21.3研究動機 31.4論文章節架構 3第二章 相關研究 5第三章 系統架構 83.1 文字辨識 93.2 骨架粹取 93.3 節點決定 103.4 多邊形粹取 103.5 三維模型建構 10第四章 地圖上的文字辨識 114.1 影像自動偵測及辨識文字系統 114.2 文字辨識 134.2.1 各點相連關係的建立 134.2.2 文字粹取 144.2.3 辨識文字 14第五章 建物模型建構 165.1細化演算法 175.1.1 雜訊去除 175.1.2 相連線段偵測 175.1.3 細化 185.1.4 後處理 195.2 尋找節點 225.2.1 線段方向分析 225.2.2 線段長度分析 235.2.3 節點挑選 235.2.4 建立節點的相鄰關係 245.3 多邊形外廓粹取 265.3.1 線段的方向與旋轉方向 275.3.2 尋找順時針或逆時針方向的節點 295.3.3 建立建築物多邊形 305.4 建製地圖三維模型 32第六章 實驗 356.1 文字粹取結果 366.2 地圖細化及節點找尋 376.3 多邊形粹取結果 396.4 城市三維模型 43第七章 結論 477.1 結論 477.2 未來發展 48參考資料： 49 | zh_TW |
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| dc.language.iso | en_US | - |
| dc.source.uri (資料來源) | http://thesis.lib.nccu.edu.tw/record/#G0093753025 | en_US |
| dc.subject (關鍵詞) | 數位城市 | zh_TW |
| dc.subject (關鍵詞) | 文字辨識 | zh_TW |
| dc.subject (關鍵詞) | 特徵粹取 | zh_TW |
| dc.subject (關鍵詞) | 地圖向量化 | zh_TW |
| dc.title (題名) | 由地圖建構城市三維模型 | zh_TW |
| dc.title (題名) | Urban Buildings Modeling from Scanned Images | en_US |
| dc.type (資料類型) | thesis | en |
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