Technology and Methodology |
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HAZE REMOVAL BASED ON SPOT REMOTE SENSING IMAGE
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YANG Xiao-feng 1, ZHENG You-fei 1, WEN Xing-ping 2, ZHANG Yu-ping 3 |
1. Institute of Environmental Science and Engineering, Nanjing University of Information Science and Technology,
Nanjing 210044, China;2. Institute of Mathematic Geology and Remote Sensing Geology, China University of
Geosciences; Wuhan 430074, China;3.Zhangjiagang Meteorological Bureau of Jiangsu Province, Zhangjiagang 215600,
China |
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Abstract This paper deals with the methods for haze removal based on SPOT5 remote sensing image by using haze-
clear areas reflectance matching. The procedure is as follows: First, the haze area is recognized by using band
statistic values; second, the remote sensing image is classified by using unsupervised classification, then the
aerosol optical depth distribution is calculated by comparing the radiation values in haze and clear areas and,
finally, the image can be atmospherically corrected by using MODTRAN model. The panchromatic image can be
atmospherically corrected in a similar way by using the resample aerosol optical depth distribution. It is concluded
that the haze-clear area reflectance matching is an effective haze removal method. In addition, the image can be
transformed to reflectance and compared with different remote sensing images.
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Keywords
Main pollution sources
Remote sensing interpretation
Urban environment
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Issue Date: 13 July 2009
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