http://hyperspectral.jpl.nasa.gov/

OVERVIEW

Hyperspectral imagery has provided dramatic new insight into the geology and atmosphere of other planets. However, understanding these images can be quite challenging since scientists can only visualize a small number of bands. The Hyperspectral Image Interactive Holistic Analysis Toolkit (Hii-Hat) is an intelligent assistant to help analysts efficiently browse, summarize, and search hyperspectral images. The software consists of a plugin to the IDL/ENVI environment. The algorithms are designed for the special challenges of high dimensional terrestrial and planetary science datasets:

• High noise levels: Many of the most interesting planetary science questions involve spectral features at the limits of detectability. We emphasize robust strategies capable of detecting subtle spectral features with high levels of noise.
• Uncertain constituents: In many hyperspectral imaging settings, we have very few ground truth samples from the surface. We address this by "unsupervised" analysis that looks for patterns in the observed data itself, and optionally by incorporating domain knowledge in the form of spectral libraries.
• Fast turnaround time: Tactical observation planning may require fast decisions, so the analysis procedures aim to be as automated as possible. The software toolkit includes automatic procedures for image
  summarization, and techniques to search images for key spectral features.

SYSTEM REQUIREMENTS

• ITT ENVI+IDL 4.3+ (http://ittvis.com)
• Optional: CRISM Analysis Tool (CAT): required for pre-processing CRISM image formats. Available at: http://pds-geosciences.wustl.edu/missions/mro/crism.htm
• Tested on Red Hat Enterprise Linux Client release 5.6 (Tikanga) x86_64 and Mac OSX 10.4+ Intel

INSTALLATION

1. Unzip the outer archive directory, and place it into the save_add directory of your local ENVI installation.

2. Launch ENVI. You should see a new "Hii-HAT" directory appear with several new menu options.

3. You're done! Read the included user guide (the 'doc' subdirectory) for information on specific menu options.

CONTACTS

Brian D. Bue ([email protected]) Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Dr. M/S 306-463 Pasadena, CA 91109 USA

David R. Thompson ([email protected]) Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Dr. M/S 306-463 Pasadena, CA 91109 USA

Lukas Mandrake ([email protected]) Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Dr. M/S 306-463 Pasadena, CA 91109 USA

COPYRIGHT

Copyright 2009-2011, by the California Institute of Technology. ALL RIGHTS RESERVED. United States Government Sponsorship acknowledged. Any commercial use must be negotiated with the Office of Technology Transfer at the California Institute of Technology.

This software may be subject to U.S. export control laws and regulations. By accepting this document, the user agrees to comply with all applicable U.S. export laws and regulations. User has the responsibility to obtain export licenses, or other export authority as may be required before exporting such information to foreign countries or providing access to foreign persons.

Created: 24 September 2009 by David R. Thompson ([email protected]) Updated: 14 September 2011 by Brian D. Bue ([email protected])