Cross comparison of the vegetation indexes between Landsat TM and HJ CCD
YUAN Zhengwu1, YANG Aixia1,2, ZHONG bo2
1. College of Computer Science & Technology, Chongqing University of Posts & Telecommunications, Chongqing 400065, China;
2. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
In order to demonstrate the correlativity of the vegetation indexes between Landsat TM and HJ CCD imageries, the authors first conducted the conversion from gray values of multi-spectrum bands to apparent reflectance for several pairs of Landsat TM and HJ CCD imageries. The quantitative relationship of normalized differential vegetation indexes between the two imageries was established through regression analysis in the light of different land cover types. At last, the conversion equation was calculated and the difference between the two kinds of data was analyzed. The result shows that vegetation indexes between Landsat TM and HJ CCD have significant linear positive correlation, and the conversion precision of the transformation equation is reasonably high.
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2015, Vol. 27 
