Unfocused Blur Assessment of SAR Images

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• 作者：Han Zhang (21)
  Weidong Yan (21)
  Hui Bian (21)
  Weiping Ni (21)
  Junzheng Wu (21)
  Sha Li (21)
  Xinlu Ma (21)
  Ying Lu (21)
  
• 关键词：SAR Image ; unfocused blur ; Radon transform ; saliency
• 刊名：Lecture Notes in Computer Science
• 出版年：2013
• 出版时间：2013
• 年：2013
• 卷：8261
• 期：1
• 页码：14-21
• 全文大小：664KB
• 作者单位：Han Zhang (21)
  Weidong Yan (21)
  Hui Bian (21)
  Weiping Ni (21)
  Junzheng Wu (21)
  Sha Li (21)
  Xinlu Ma (21)
  Ying Lu (21)
  
  21. Northwest Institute of Nuclear Technology, 710024, Xi’an, China
  
• ISSN：1611-3349

文摘

Unfocused blur assessment is an important part of SAR image quality evaluation system. The mainlobe of unfocused point target is widened and the sidelobe is raised, leading to broadened edges in the azimuth direction. Based on this phenomenon, we proposed a new method to evaluate the extent of unfocused blur using truncated image spectrum and the average edge width in the salient area. A new metric UBE is defined and verified by experiments.