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Student Number 85322080
Author chii-chrong shyu(徐啟崇)
Author's Email Address No Public.
Statistics This thesis had been viewed 279 times. Download 10 times.
Department Civil Engineering
Year 1997
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Extraction of Shorelines from Optical and SAR Images Using Feature Analysis
Date of Defense 0000-00-00
Page Count 100
Keyword
  • edge vectorization
  • image classification
  • mutispectral edge detection
  • radar edge detection
  • radar image
  • speckle reduction
  • Abstract Coastal zone monitoring is an important task in national
    development and environmental protection. In which,extraction of
    shorelines is the fundamental work of necessity. This
    investigation aims to extract shorelines in an automated way for
    optical and radar images.  The use of images of this
    investigation comprises two parts, SPOT multispectral images and
    ERS-1 radar images. The main components of extraction of
    shorelines include : (1)obtaining a rough separation between the
    land and water and (2) refinement the rough land-water
    boundaries by edge detection and edge tracing algorithms to
    extract the accurate shoreline position.  To assess the
    accuracy of shoreline position extracted automatically from the
    imagery,ground measurements by GPS were treated as references.
    The shoreline positions determined from the images were found to
    agree with the measured ground position to within one to two
    pixels.
    Table of Content 摘要 I
    英文摘要 II
    致謝 III
    目錄 IV
    表目錄 VII
    圖目錄 VIII
    --
    第一章 緒論 1
    1.1 前言 1
    1.2 研究目的與過程 2
     1.2.1 研究目的 2
     1.2.2 研究過程及文獻回顧 2
    1.3 本文架構 11
    第二章 多光譜影像之攤線萃取 12
    2.1 前言 12
    2.2 沙洲區塊邊界萃取即向量化 12
     2.2.1 沙洲二元化影像擷取 12
     2.2.2 萃取興趣特徵物 14
     2.2.3 二元化影像平滑化 17
     2.2.4 細化方法及研究 20
     2.2.5 攤線追蹤一致性 22
     2.2.6 線條分支去除與資料向量化 26
      2.2.6.1 細化後攤線支線條追蹤法則 26
      2.2.6.1.1 實際應用系化後攤線支線條追蹤 28
    2.3 多光譜影像邊緣線偵測 32
     2.3.1 多光譜邊緣線偵測之理論模式 32
     2.3.2 多光譜邊緣線偵測的執行流程 34
    2.4 SPOT多光譜影像攤線精緻與修正 35
    第三章 ERS-1 SAR 影像攤線之萃取 39
    3.1 前言 39
    3.2 斑駁雜訊之抑制 40
     3.2.1 Lee Sigma平滑器 41
     3.2.2 Hybrid Sigma平滑器 42
    3.3 ERS-1 合成孔徑雷達影像攤線特徵萃取 46
     3.3.1 ERS-1 雷達影像特徵線之萃取 47
      3.3.1.1 邊緣線強度的偵測 47
      3.3.1.2 局部非最大值的壓抑的流程 48
      3.3.1.3 邊緣線追蹤 52
     3.3.2 ERS-1 雷達影像特徵區塊萃取及邊界向量化 54
      3.3.2.1 利用幾何及統計邊緣偵測器做邊緣線偵測 54
      3.3.2.2 特徵區塊形成 57
      3.3.2.3 特徵區塊邊界萃取集向量化 57
    3.4 雷達影像攤線精緻與修正 58
    第四章 實例研究結果及驗證 60
    4.1 實驗影像介紹 60
    4.2 SPOT 多光譜影像攤線萃取之實驗成果 65
     4.2.1 沙洲區塊萃取及邊界向量化之實驗成果 65
     4.2.2 邊緣線強度偵測 72
     4.2.3 區塊與邊緣線強度整合及灘線精化 74
    4.3 EPS-1 雷達影像灘線特徵萃取之實驗成果 80
     4.3.1 邊緣線萃取 81
     4.3.2 區塊萃取與邊界向量化 83
     4.3.3 結合區塊與邊緣線萃取及灘線精化 87
    4.4 成果驗證 89
     4.4.1 灘線測量過程 89
     4.4.2 影像灘線萃取與GPS量測灘線之比較 90
     4.4.3 影像灘線萃取與人工數化灘線之比較 92
      4.4.3.1 數化灘線之平均灘線之取得 92
      4.4.3.2 灘線萃取之精度評估 92
    第五章 結果與展望 95
    參考文獻 97
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    Advisor
  • Chen liang-chien(陳良健)
  • Files No Any Full Text File.
    Date of Submission

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