Volume 37 Issue 8
Aug.  2012
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LUO Qingzhou, LI Xianhua, MEI Anxin. Impact Evaluation of Neglecting Radiance Reflected from Neighboring Slopes on Calculating Target Reflectance[J]. Geomatics and Information Science of Wuhan University, 2012, 37(8): 932-935.
Citation: LUO Qingzhou, LI Xianhua, MEI Anxin. Impact Evaluation of Neglecting Radiance Reflected from Neighboring Slopes on Calculating Target Reflectance[J]. Geomatics and Information Science of Wuhan University, 2012, 37(8): 932-935.
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Impact Evaluation of Neglecting Radiance Reflected from Neighboring Slopes on Calculating Target Reflectance

  • 1 School of Remote Sensing,Nanjing University of Information Science and Technology,219 Ningliu Road,Nanjing 210044,China;2 School of Communication and Information Engineering,Shanghai University,149 Yanchang Road,Shanghai 200072,China;3 School of Resources and Environment Science,East China Normal University, 3663 North Zhongshan Road,Shanghai 200062,China

Funds: 国家自然科学基金资助项目(41001288);;江苏省自然科学基金资助项目(BK2010571);;江苏省高校自然科学研究基金资助项目(10KJB170010)
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  • Received Date: June 14, 2012
  • Published Date: August 04, 2012
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    • Abstract
  • The radiance reflected from neighboring slopes is calculated with an empirical Lambertian model.An assessment model is developed to analyze relative error of target reflectance when neglecting incoming irradiance is neglected from surrounding terrain which will cause the reflectance of target pixel to be overestimated.The overestimation of reflectance will be stronger in shaded areas,which could bring more saturation value in topographically corrected image.The results show that radiance reflected from neighboring vegetation in near-infrared spectrum and neighboring snow in the visible and near-infrared spectrum should be accounted when we compute the reflectance of targets.Especially in the case of deep valleys,the overestimation of target reflectance could be more than 10% when the radiance is neglected.
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