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#freeze
[[GIS/RS knowledge base]]
*SARのスペックルノイズ除去について [#ye0ae2ee]
スペックルノイズの主なフィルタリング手法は以下の通りです。
・Mean filter~
・Median filter~
・Local region filter~
・Lee filter~
・Gamma map filter~
各種手法についての解説は以下の文献を参照してください~
[[Mansourpour et al.(2006) Effects and performance of speckle noise reduction filters on active radar and SAR images>http://www.isprs.org/proceedings/XXXVI/1-W41/makaleler/Rajabi_Specle_Noise.pdf]]~
これらのフィルタリングは[[NEST>http://nest.array.ca/web/nest]]で処理可能です。~
ERDASが使用可能な環境では~
RADAR→RADAR INTERPRETER→Speckle Suppressionでも同様の処理ができます。
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
