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Estimating landscape imperviousness index from satellite imagery

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1 Author(s)
Xiaojun Yang ; Dept. of Geogr., Florida State Univ., Tallahassee, FL, USA

This letter presents a practical method for landscape imperviousness estimation through the synergistic use of Landsat Enhanced Thematic Mapper Plus (ETM+) and high-resolution imagery. A 1-m resolution color-infrared digital orthophoto was used to calibrate a stepwise multivariate statistical model for continuous landscape imperviousness estimation from medium-resolution ETM+ data. A variety of predictive variables were initially considered, but only brightness and greenness images were retained because they were account for most of the imperviousness variation measured from the calibration data. The performance of this method was assessed, both visually and statistically. Operationally, this method is promising because it does not involve any more sophisticated algorithms, such as classification tree or neural networks, but offers comparable mapping accuracy. Further improvements are also discussed.

Published in:

IEEE Geoscience and Remote Sensing Letters  (Volume:3 ,  Issue: 1 )