1. ITT Visual Information Solutions
November 08, 2007

2. Market Drivers
• Quantity and size of data is increasing
• New customers are using geospatial/scientific data
• Software is no longer locked to the desktop
Gap In Expectations
Success
ENVI/IDL Solution
Functionality
• Extensive functionality
• Visualization & Analysis
• Cross platform
Usability
Usability
• Modern Abstraction & UI
• Abstraction
• Consistency
• Interactive & Batch Scripting
• Interactivity & Easy Workflows
• Powerful Processing
Today: Changing markets and evolving technologies have changed expectations
www.ittvis.com

3. ENVI & IDL Product Goals
• ENVI
– Access Any Data, Any Time, Any Where
– Extract information from diverse data types
– Tools to share data and information
• IDL
– Improve Rapid Development functionality
– Improve Usability
– Make it easier to read data & interact with graphics
– Easy-to-use modern, widget controls and behavior
– Enhance Core functionality
www.ittvis.com

4. ENVI and ENVI Zoom 4.4
Visualize
• File Format Support
– TFRD
Access
• Vegetation Suppression
Analyze
Customize
– Suppresses vegetative component of
reflectance
• SPEAR Tools
– Simplified workflow to apply existing
ENVI advanced spatial and spectral
analysis techniques
• Vectors
• Feature Extraction
– Easy to use workflow for extracting
features from images
– Vehicles
– Buildings
– Transportation features
– Natural Features
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5. IDL 7.0 – The IDL Workbench
• Looks and behaves like a
native application
– A single, cross-platform
development environment
– Robust, fully-integrated
– Modern controls to edit, run
and debug IDL code
• Foundation for new
functionality to improve the
usability of IDL
– Plug-in architecture makes
it easier to add features
www.ittvis.com

6. Recent Advances in HDF and HDFEOS Product Support
Harold Cline
Bill Okubo
Devin White

7. New Toolkits and Enhancements for ENVI/IDL
• The MODIS Conversion Toolkit (MCTK)
• The ENVI Plugin for Ocean Color (EPOC)
• Hyperion Tools
• ASTER Level 2 RPC Orthorectification
• NOAA CoastWatch AVHRR support
• AIRS Level 1B Radiance support (prototype)
www.ittvis.com

8. The MODIS Conversion Toolkit (MCTK)
• The MODIS Conversion Toolkit (MCTK) is a plugin for ENVI
that can ingest, process, and georeference every known
MODIS product (currently 143) through your choice of an
easy-to-use interactive widget interface or a fully-accessible
programmatic interface. Supported products include:
- Level 1A Uncalibrated Radiance
- Level 1B Calibrated Radiance
- Level 2 Swath
- Level 2G, Level 3, and Level 4 Grid
• Works with MODIS data from the Land, Cryosphere,
Atmosphere, and Calibration groups.
http://www.ittvis.com/codebank/search.asp?FID=485
www.ittvis.com

9. MCTK (continued)
• The interface allows you to take a "cafeteria"
approach to MODIS data by providing a list of all
available datasets within a file, from which you
can choose the ones to process.
• The ENVI equivalents of MRT and MRTSwath are
built in as well, which means that you can input a
file, have its contents converted to scientifically
meaningful values, and then project those
contents into the coordinate system of your
choice--all within one interface.
• Bow tie correction is also available for all swath
products.
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10. Download Page
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11. MCTK: Processing Flow
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12. MCTK (continued)
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13. MODIS in ENVIZoom
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14. The ENVI Plugin for Ocean Color
• The ENVI Plugin for Ocean Color (EPOC) is an HDF file
conversion and georeferencing utility for data sets that are
currently distributed through the OceanColor web site
(http://oceancolor.gsfc.nasa.gov) or created using the
SeaWiFS Data Analysis System (SeaDAS,
http://oceancolor.gsfc.nasa.gov/seadas).
• Level 1A, Level 2, and Level 3 SMI data sets are supported
for five sensors: MODIS Aqua, MODIS Terra, SeaWiFS,
CZCS, and OCTS.
• The source code for this plugin is available and can be
modified to suit an individual user’s needs.
http://www.ittvis.com/codebank/search.asp?FID=529
www.ittvis.com

15. EPOC (continued)
www.ittvis.com

16. Planned Toolkit Merger: MCTK+EPOC
• MCTK and EPOC use completely different
methods for converting and georeferencing HDFEOS data. MCTK, built more recently, uses more
efficient and flexible methods that could be applied
to Ocean Color data sets as well.
• The plan is to fold EPOC’s current functionality
into MCTK and offer one combined toolkit.*
• Merger is planned for first quarter of 2008.
*Source code for EPOC would no longer be available, but
conversion and georeferencing performance would be
significantly improved.
www.ittvis.com

17. Hyperion Tools
• The Hyperion Tools plugin is designed to facilitate the use of
Hyperion data in ENVI. Its most basic functionality is to convert
Level 1R HDF and Level 1G/1T HDF and GeoTIFF datasets into
ENVI format files that contain wavelength, full width half maximum,
and bad band information. Also included are options specific to
each input dataset format that further aid in using Hyperion data
within ENVI.
• Options for Level 1R data include: Georeferencing, Flag Mask
Correction, Mask Image Creation, Generation of FLAASH Scale
Factors, and Interpolation to a Common Wavelength Set. Options
for Level 1G/1T data include: Mask Image Creation, Conversion to
BIP Interleave, and Generation of FLAASH Scale Factors.
http://www.ittvis.com/codebank/search.asp?FID=467
www.ittvis.com

18. Hyperion Tools (continued)
www.ittvis.com

19. ASTER Level 2 RPC Orthorectification
• ENVI natively supports RPC orthorectification for
ASTER Level 1A and Level 1B HDF products
distributed by the LPDAAC.
• This plugin allows for the RPC orthorectification of
ASTER Level 2 products, including AST_04,
AST_05, AST_06SD/TD/VD, AST_07V/VXT,
AST_07S/SXT, AST_08, and AST_09V/S/T
http://www.ittvis.com/codebank/search.asp?FID=481
www.ittvis.com

20. NOAA CoastWatch AVHRR Support
• This plugin allows you to easily import NOAA CoastWatch
AVHRR data into ENVI. All image datasets present in the
user-supplied HDF file are transferred into one
georeferenced multiband ENVI file, including: original
AVHRR channels, cloud masks, graphics, zenith angle, and
Sea Surface Temperature (SST).
• Any scale and offset values present for individual datasets
are automatically applied during the conversion process so
that scientifically meaningful values are immediately
available for visualization and analysis. This is particularly
helpful for the SST dataset, which contains values in
degrees Celsius after conversion.
http://www.ittvis.com/codebank/search.asp?FID=513
www.ittvis.com

21. AIRS Level 1B Radiance Plugin
• Still under development, but a functional prototype
is complete.
• Converts AIRS Level 1B Radiance data to a
multiband ENVI format file and optionally
georeferences it using the same methods found in
MCTK.
• Correctly handles custom ordered channel subset
files and assignments of wavenumbers and
FWHM values to each band.
• Prototype is available upon request.
www.ittvis.com