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  Optical Remote Sensing in Persistently Cloudy Landscapes


This research focuses on methods to addresses the refractory problem of clouds in optical satellite imagery in persistently cloudy, complex tropical landscapes.  Current studies are contributing to goals of the Landsat Science Team and the Landsat Data Continuity Mission (LDCM).  The LDCM is a joint mission of the U.S. Geological Survey and the National Aeronautics and Space Administration.  The study locations include Eleuthera island in The Bahamas, Trinidad and Tobago, Puerto Rico and the U.S. Virgin Islands, and other neotropical locations.



Personnel
 Personnel 
Eileen Helmer  
Publications
 Title 
2007 A comparison of radiometric normalization methods when filling cloud gaps in Landsat imagery
Mapping persistently cloudy tropical landscapes with optical satellite imagery usually requires assembling the clear imagery from several dates. This study compares methods for normalizing image data when filling cloud gaps in Landsat imagery with imagery from other dates. ...
2005 Cloud-Free Satellite Image Mosaics with Regression Trees and Histogram Matching
Cloud-free optical satellite imagery simplifies remote sensing, but land-cover phenology limits existing solutions to persistent cloudiness to compositing temporally resolute, spatially coarser imagery. Here, a new strategy for developing cloud-free imagery at finer resolution permits simple automatic change detection. ...