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基于增強指數(shù)加權(quán)均值比的SAR圖像邊緣檢測算法

胡炎 單子力 高峰

胡炎, 單子力, 高峰. 基于增強指數(shù)加權(quán)均值比的SAR圖像邊緣檢測算法[J]. 電子與信息學(xué)報, 2018, 40(5): 1166-1172. doi: 10.11999/JEIT170806
引用本文: 胡炎, 單子力, 高峰. 基于增強指數(shù)加權(quán)均值比的SAR圖像邊緣檢測算法[J]. 電子與信息學(xué)報, 2018, 40(5): 1166-1172. doi: 10.11999/JEIT170806
HU Yan, SHAN Zili, GAO Feng. Edge Detection Algorithm for SAR Image Based on Enhanced ROEWA[J]. Journal of Electronics & Information Technology, 2018, 40(5): 1166-1172. doi: 10.11999/JEIT170806
Citation: HU Yan, SHAN Zili, GAO Feng. Edge Detection Algorithm for SAR Image Based on Enhanced ROEWA[J]. Journal of Electronics & Information Technology, 2018, 40(5): 1166-1172. doi: 10.11999/JEIT170806

基于增強指數(shù)加權(quán)均值比的SAR圖像邊緣檢測算法

doi: 10.11999/JEIT170806
基金項目: 

中國電子科技集團公司航天信息應(yīng)用技術(shù)重點實驗室開放基金(EX166290025)

Edge Detection Algorithm for SAR Image Based on Enhanced ROEWA

Funds: 

The Open Fundation of CETC Key Laboratory of Aerospace Information Applications (EX166290025)

  • 摘要: 研究學(xué)者們認為指數(shù)加權(quán)均值比(ROEWA)算子存在無法計算SAR圖像邊緣方向的缺陷。為此,進行了一些通過方向濾波器為ROEWA算法施加方向的工作。該文對ROEWA算法進行了深入的探討和分析,通過對ROEWA算法卷積過程的進一步推導(dǎo),獲得了ROEWA算法像素級的觀測公式。根據(jù)推導(dǎo)結(jié)果,提出了一種增強的ROEWA(EROEWA)邊緣檢測算法。首先,利用新的卷積策略將ROEWA的公式項解耦,獲得了4個方向的指數(shù)加權(quán)均值;然后把SAR圖像旋轉(zhuǎn)45,再利用新的卷積策略獲取額外的4個方向的指數(shù)加權(quán)均值;最后,將8個方向的指數(shù)加權(quán)均值表示成8個矢量,通過矢量合成求出邊緣強度和邊緣方向。實驗結(jié)果表明,提出的EROEWA算法不僅具有優(yōu)秀的邊緣方向計算能力,與ROEWA算法相比,邊緣強度的提取也有顯著的增強效果。
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  • 文章訪問數(shù):  1561
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  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  2017-08-14
  • 修回日期:  2018-02-01
  • 刊出日期:  2018-05-19

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