Scale properties of the apparent reflectance of false dark pixel: A case study of the images of AWiFS and LISS sensors
CHEN Jun1,2, QUAN Wenting3
1. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China; 2. Qingdao Institute of Marine Geology, Qingdao 266071, China; 3. Shaanxi Remote Sensing Information Center for Agriculture, Xi’an 710014, China
Abstract：With the case II waters in the Taihu Lake and Yellow River estuary as the research object and seven images of the advanced wide-field sensor(AWiFS)and linear imaging self-scanner(LISS)of Indian satellite as the basic data,the authors theoretically illuminated and experimentally evaluated the scale-depended properties of pseudo dark target pixel for dark target atmospheric correction. The results of the study show that:1 with the scale-downing method,the false dark pixel can be divided into several sub-pixels,each of which at least includes one dark pixel; 2 the problem whether there are dark pixels suitable for atmospheric correction or not is a conclusion vaguely containing scale properties; 3 there are about 8.98% bias between the reflectance of false dark pixel of AWiFS and that of LISS sensors in the Taihu Lake and Yellow River estuary,because of the different scales of the pixels; 4 the linear model (y=0.996 x-0.003 1)can be used to correct the apparent reflectance of false dark pixel of AWiFS to that of LISS,and the regression error is only 1.86%.
陈军, 权文婷. “伪暗像元”表观反射率的尺度特性——以AWiFS和LISS传感器图像为例[J]. 国土资源遥感, 2013, 25(2): 33-36.
CHEN Jun, QUAN Wenting. Scale properties of the apparent reflectance of false dark pixel: A case study of the images of AWiFS and LISS sensors. REMOTE SENSING FOR LAND & RESOURCES, 2013, 25(2): 33-36.
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2013, Vol. 25 
