HR: 08:55h
AN: IN21C-04    [Abstracts]
TI: Spatial Prescreening Techniques for Earth Observation Data: Bounding Box vs G- Polygon
AU: * Hua, X
EM: xhua@pop600.gsfc.nasa.gov
AF: ADNET Systems. Inc., 164 Rollins Ave. Suite 303, Rockville, MD 20852, United States
AU: Pan, J
EM: jpan@pop600.gsfc.nasa.gov
AF: ADNET Systems. Inc., 164 Rollins Ave. Suite 303, Rockville, MD 20852, United States
AU: Leptoukh, G
EM: Gregory.Leptoukh@nasa.gov
AF: GSFC, NASA/GSFC Code 610.2, Greenbelt, MD 20771, United States
AU: Vollmer, B
EM: bvollmer@pop600.gsfc.nasa.gov
AF: GSFC, NASA/GSFC Code 610.2, Greenbelt, MD 20771, United States
AB: We compare the two methods widely used in defining geographical regions in satellite Earth observation data -- Bounding box and G-polygon. While G-polygon method is more acurate than bounding box, it is mathematically more complicated. We introduce a efficient and easy-to-use algorithm to define G-polygon regions. It is capable of handling most Terra and Aqua satellite data granules regardless of their locations on the Earth, with no special treatment required for dateline and pole crossing regions. It is easily adaptable to other problems where spatial prescreening and subsetting is desired.
DE: 3200 MATHEMATICAL GEOPHYSICS (0500, 4400, 7833)
DE: 3252 Spatial analysis (0500)
DE: 7833 Mathematical and numerical techniques (0500, 3200)
SC: Earth and Space Science Informatics [IN]
MN: 2007 Fall Meeting