This product was discontinued on May 13, 2010.
The ASTER On-Demand Level-2 Decorrelation Stretch VNIR (visible and near-infrared) product is a color-enhanced image of the VNIR radiance produced from ASTER Level-1B data. Decorrelation stretch is a process used to enhance the color differences in an image by removing the inter-band correlation in the radiance values of the input VNIR pixels. Such ... an image provides a general overview that emphasizes reflectance variations and restrains variations due to topography and temperature. The general purpose of a decorrelation stretched image is to serve as a data visualization tool while reviewing and selecting ASTER image data for further analysis and research.
V002 data set release date: 2000-12-22
V003 data set release date: 2002-05-03
The key determinants between these versions are the use of a newer algorithm with an improved set of radiometric calibration and geometric correction coefficients databases in version 003.
Data Set Characteristics:
Area: ~60 km x 60 km
Image Dimensions: 4200 rows x 4980 columns
File Size: ~85 Megabytes
Projection: Universal Transverse Mercator (UTM)
Data Format: HDF-EOS
Vgroup Data Fields: 3