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系統識別號 U0026-2608201415162000
論文名稱(中文) 利用遙測影像以主成份分析對防砂壩工程與鄰近坡地穩定性關聯分析-以曾文水庫為例
論文名稱(英文) Relationship of check dam location to the slope stability studied by the principal component analysis method with satellite image: a case study at Tseng-Wen Reservoir, Taiwan
校院名稱 成功大學
系所名稱(中) 資源工程學系
系所名稱(英) Department of Resources Engineering
學年度 102
學期 2
出版年 103
研究生(中文) 葉崑祥
研究生(英文) Kun-Hsiang Yeh
學號 N46011067
學位類別 碩士
語文別 中文
論文頁數 79頁
口試委員 指導教授-余騰鐸
口試委員-史天元
口試委員-壽克堅
口試委員-曾義星
中文關鍵字 主成分分析  物件分類  防砂壩  崩塌 
英文關鍵字 Principal Component Analysis  Object-Based Image Classification  Check dam  landslide 
學科別分類
中文摘要 本研究以遙測影像對坡地進行監測,透過裸露地的土壤光學特性,以主成分分析轉換、常態化差異植生指標及亮度指標進行分析比較,其中主成份分析轉換有最好的顯色能力,並能夠區分陰影、水體、與裸露地等植生指標偏低的區域。之後再比較物件式影像分類、圖像直接比較法與分類後比較法等變異訊息偵測的方法,其中物件式影像分類法會因為兩期影像色彩強度的差異而造成分類結果略為不同而造成誤差,而分類後比較法所要探討的分類種類過多,不適合多時期、多地點統一標準進行偵側比較,最後圖像直接比較法中的假色分析法能夠直接的顯示出兩期影像的差異,在效率上有著顯著的提升。
研究結果顯示,阿里山區37及39林班野溪治理工程在完工後發生崩塌與侵蝕的頻率增加,可能是該工程設計並全然適用於該地區,而45林班野溪治理工程、117及123林班野溪治理工程及137林班野溪治理工程則在工程完工後有達到保護邊坡的目的。
英文摘要 In this study, remote sensing images of the target slope is monitored by the optical properties of the bare soil ground by principal component analysis, normalized difference vegetation index and brightness index. The principal components analysis has the best color-conversion capability and able to distinguish shadows, water bodies, vegetation and bare ground at low indexes region. Then comparing the efficiency from Object-Based Image Classification, image direct comparison method and image classification comparison method in determine the changes of optical signature of images. It is found that Object-Based Image Classification reveals obvious errors of the classification results resulting from minor differences of image color intensity. Image classification comparison method is to explore the plethora of different types of classification; it is not suitable for changing detection with same criteria for multi-period and multi-site application. Finally image direct comparison method could show the differences between the two images directly in an improved efficiency manner.
Results showed that the 37th and 39th forest compartments wild stream treatment projects of Tseng-Wen watershed, shown an increasing frequency of landslides and erosion after the construction. It might cause by the unsuitable engineering design that didn’t applicable to the entire region. While 45th, 117th, 123th and 137th forest compartments wild stream treatment project reach the proposed goal of slope protecting after the completion.
論文目次 第一章 緒論 1
1.1 研究目的 1
1.2 研究流程 1
第二章 文獻回顧 3
2.1 防砂壩工程影響與相關研究 3
2.2 崩塌的定義與判識 4
2.2.1崩塌的定義 4
2.2.2崩塌地判識 4
2.3 植生於遙測光譜反射特性 7
2.3.1常態化差異植生指標 7
2.3.2亮度指標 8
2.3.3主成份分析 9
2.4 物件導向技術應用於衛星影像 10
2.4.1多尺度分割原理 10
a. 物件形狀異質性指標(hshape) 10
b. 物件光譜異質性指標(hcolor ) 11
c. 物件整體異質性指標(h) 12
2.4.2知識庫區塊分類 13
第三章 研究方法 15
3.1 研究工具 15
3.1.1 FM-2/SPOT-5衛星影像 15
3.1.2 工程點選取 18
3.1.3 應用軟體概述 18
a. ENVI 5.0 18
b. eCognition Developer 64 8.7 19
c. ArcGIS 19
3.2 研究區域 19
3.3 影像前處理 21
3.3.1 幾何校正 21
3.3.2 幅射校正 21
3.3 主成份分析 23
3.4.1 獨立數據變換分析法 23
3.4.2 合併數據轉換法 26
3.5 物件式分類 28
3.6 變異訊息偵測 31
3.6.1 圖像直接比較法 31
a. 圖像差值/比值法 31
b. 假色合成法 31
3.6.2 分類後比較法 32
第四章 研究成果與討論 34
4.1 NDVI、BI與第二主成份之比較 34
4.2 合併數據轉換法矩陣計算方式選擇 38
4.3 獨立數據變換分析法與合併數據轉換法變遷分析比較 44
4.4 各防砂壩工程逐期影像變異分析 47
4.4.1 大埔區37及39林班野溪治理工程 47
4.4.2 大埔區45林班野溪治理工程 53
4.4.3 大埔區117及123林班野溪治理工程 59
4.4.4 大埔區137林班野溪整治工程 64
4.5 防砂壩工程與林進坡地穩定性關連討論 70
4.6 防砂壩工程與最大日雨量分析討論 73
第五章 結論與建議 75
5.1 結論 75
5.2 建議 76
參考文獻 77
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