跳到主要內容

臺灣博碩士論文加值系統

(54.224.117.125) 您好!臺灣時間:2022/01/23 19:32
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:黃成偉
研究生(外文):CHENG-WEI HUANG
論文名稱:時間序列之混凝土影像半自動裂縫變遷偵測
論文名稱(外文):Semi-automatic Crack Change Detection on Multi-temporal Concrete Images
指導教授:陳良健陳良健引用關係
指導教授(外文):Liang-Chien CHEN
學位類別:碩士
校院名稱:國立中央大學
系所名稱:土木工程研究所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:91
中文關鍵詞:變遷偵測半自動化近景攝影測量
外文關鍵詞:Change DetectionSemi-automaticClose-range
相關次數:
  • 被引用被引用:3
  • 點閱點閱:214
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
中文摘要
混凝土結構物受到物理或化學因素將會導致裂縫生成。本研究提出一套使用非接觸性量測方式來分析膨脹量與裂縫寬度間之關係,滿足對量測結果之一致性與重複性。使用非量測性相機近景攝影測量裂縫板塊,續以高解析度掃描器掃描成數值影像,以率定參數改正影像及二維投影轉換求得時間序列裂縫像空間影像及物空間關係。裂縫搜尋中為了提高其成果之可靠性因此採用半自動之方式,在裂縫分叉或端點之特徵輸入概略人工影像種子點。由於人工種子點並非準確落在特徵點,因此在種子點座落區域取目標視窗,使用基底函數轉換邊界偵測、區域增長消除雜訊區塊、裂縫區塊骨骼細化,接著尋找裂縫交叉點及端點,準確尋找出種子點應座落的位置,以此位置匹配後時期裂縫影像種子點,續以偵測前後時期裂縫邊界,利用局部套合求得高相對精度,求得裂縫成長的情況。
關鍵詞:近景攝影(Close-range),半自動化(Semi-automatic),變遷偵測(Change Detection)
ABSTRACT
KEY WORDS: Close-range, Semi-automatic, Change Detection
The elements of concrete structures suffering from chemical reactions tend to be an expansion phenomenon, which leads to cracks. Non-contact measurement is employed to analysis the relationship between concrete expansion and crack width. This paper deals with semi-automatic crack feature extraction from digital multi-temporal close-range images with non-metric camera and processes the image adjustment with lens distortion parameters. Furthermore, the relationship between image and object space is obtained by 2-D projective transformation to do tilt rectification. Only few roughly manual seed points are required on crotches of crack features. Then, the shape and position may be illustrated with automatic feature extraction in two-dimensional image space. Because manual seed points are not exactly located on the crack features, two methods are proposed to search the geometric crack features, such as crotches. Wavelet transformation, clumpping, thinning and crossing algorithm are processed sequentialy to reach the automatic feature extraciton purpose. Depending on these seed points, crack tracks and edges are determined by the method in this paper. Local image registration is utilized to raise relative accuracy and acquire the expansion of concrete cracks.
目錄
中文摘要I
ABSTRACTII
目錄III
圖目錄V
表目錄VII
第一章序論1
1-1研究動機與目的1
1-2研究分析與文獻回顧1
1-2-1影像幾何關係的建立2
1-2-2數值影像處理3
1-3研究構思與流程8
1-4論文架構11
第二章數位影像的幾何分析12
2-1相機率定12
2-2傾斜攝影改正18
第三章裂縫搜尋與量測20
3-1裂縫搜尋20
3-2裂縫邊界26
3-3裂縫增長搜尋33
第四章半自動化搜尋裂縫幾何特徵點37
4-1裂縫交叉點半自動搜尋法40
4-1-1基底函數轉換邊界偵測40
4-1-2區塊編碼(Clump)、消除雜訊區塊43
4-1-3骨骼細化(Thin)47
4-1-4(Cross)裂縫特徵區塊骨架分叉點搜尋51
4-1-5多門檻值操作搜尋交叉點位置54
4-2概略點選種子點法56
第五章精度與成果分析59
5-1透鏡畸變參數影響量59
5-2序列影像裂縫檢核60
5-2-1裂縫邊界位置之檢核60
5-2-2裂縫寬度量測之檢核65
5-3裂縫交點檢核67
5-4程式操作成果70
5-5裂縫寬度與膨脹量之關係78
第六章結論與建議87
參考文獻90
詹皇祥,2001. “近景數化影像半自動式混凝土裂縫量測”,碩士論文,中央大學土木工程研究所。叢蕙茲&陳良健,1998“特徵匹配於衛星影像套合之應用”,航測及遙測學刊,第三卷第一期,第46-69頁。Armin Gruen and Haihong Li; 1997. “Semi-Automatic Linear Feature Extraction by Dynamic Programming and LSB-Snakes”, Photogrammetric Engineering & Remote Sensing Vol. 63,No. 8, August, pp. 985-995.Chang, Y. L., Li, X., 1994 “Adaptive image region-growing”, IEEE Trans Image Process 3: pp.868-872.Clive S. Fraser; 1997. ”Digital Camera Self-Calibration”, ISPRS Journal of Photogrammetry & Remote Sensing Vol.52, pp.149-159.Conzalez, C. R., Richard, E. W., 1993. “Digital Image Processing”, Addison-Wesley Publishing Company.Deok, J. P., Nam, K. M., Park, R. H., 1995 “Multi-resolution edge detection techniques”, Pattern Recognition, Vol. 28,no. 2, pp.211-229.Dolar-Mantani, L. M. M., 1983. Undulatory extinction in quartz used for identifying potentially alkali-reactive rocks: Proc. 5th ICAAR, pp. 1-12.Kraus, k., 1993. PHOTOGRAMMETRY volume 1 Fundamentals and Standard Processes. pp. 188. LŰ, Y., 1988. Interest Operator and Fast Implementation. International Archives of Photogrammetry and Remote Sensing, Vol.27-II, XVI ISPRS Congress, Kyoto, Japan, pp.491-500. Moravec, H.P., 1977, Towards Automatic Visual Obstacle Avoidance, International Joint Conference of Artificial Intelligence, Vol.1, Tokyo, pp.584.Paul M. Dare, Harry B. Hanley, Clive S. Fraser, 2002. “An Operational Application of Automatic Feature Extraction: The Measurement of Cracks in Concrete Structures”, Photogrammetric Record, 17(99): pp.453-464 April.Roberts, R. A., Mullis, C. T., 1987. Digital Signal Processing. pp. 183.Wolf, P. R., Dewitt, B. A., 2000. Elements of Photogrammetry with Applications in GIS 3rd edition. pp. 543-548.
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top