HDF-EOS to GeoTIFF Conversion Tool and HDF-EOS Plug-in for HDFView

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HDF-EOS to GeoTIFF (HEG) conversion tool is a versatile tool that besides converting HDF-EOS to GeoTIFF it subsets, resamples, convert swath to grid or grids to different projections, subsamples, or does mosaicing. HDF-EOS plug-in is a library that extends HDFView, a visual tool for browsing and editing HDF4 and HDF5 files, for EOS applications. These tools will be discussed in detail and a demo will be presented.

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HDF-EOS to GeoTIFF Conversion Tool and HDF-EOS Plug-in for HDFView

  1. 1. HDF-EOS to GeoTIFF Conversion Tool & HDF-EOS Plug-in for HDFView Abe Taaheri, Raytheon IIS HDF & HDF-EOS Workshp XIII Riverdale, MD November 3, 2009 Page 1
  2. 2. HEG Utility to converts EOSDIS data from HDF-EOS2 to GeoTIFF formats. • Versions Available: – Stand-alone: A downloadable desktop version – Data Pool: Access through NASA archive online storage Page 2
  3. 3. HEG Functionality • Conversion: –HDF-EOS (Swath or Grid ) to a single-band or multi-band GeoTIFF’s –HDF-EOS Swath to HDF-EOS Grid or Swath –HDF-EOS Swath or Grid to generic Binary (with metadata file) • Subsetting (spatial, field, band) Page 3
  4. 4. HEG Functionality • Stitching (mosaicing) + subsetting + Reprojecting • Reprojection ( to UTM, PS, TM, STP, LCC, LAMAZ, GEO, SIN, Albers, CEA) • Subsampling (Subsample stacks) • Running from Command Line (batch jobs) or with Java-based GUI Page 4
  5. 5. HEG Functionality • Metadata preservation/creation. • Currently supports MODIS, MISR, ASTER, AIRS, AMSR-E products on TERRA and AQUA (>115 products), • Operable on Sun, SGI, Win, Linux, MAC Page 5
  6. 6. HEG Functionality • Integrated into ECS Data Pool – Reduces the transfer time of HDF-EOS data sets (if subset is requested) – Provides the end-user with the exact file required by their application • User Interface – Portable, written in Java. – Not dependent on COTS (eg. IDL). Page 6
  7. 7. Examples Mt. Etna Eruption: MISR L1B Stitched Blocks Page 7
  8. 8. Examples 2004 Hurricane Francis, MODIS MOD021KM, Multi-Band GeoTIFF, 3 bands: EV_1KM_RefSB, Bands 1,2,5 Page 8
  9. 9. Examples AST_L1B, 2003 California Fires Geo. projection, Multi-Band GeoTIFF (3 bands): Visible Near Infrared (VNIR) ….. and Subsetted Two Swaths Stitched ….. Page 9
  10. 10. HDFView Plug-in • HDFView A Java-based browser from THG for HDF4 and HDF5 based data. • HDF-EOS plug-in – Extends HDFView to browse HDF-EOS data in both versions (2 & 5). – Is a plug-in module does not change THG HDFView functionality – identical look and feel when displaying HDF and HDF-EOS objects – access to complete breakdown of HDF-EOS objects. e.g. grid info, projection info, dims, datafields, and attributes Page 10
  11. 11. HDFView Plug-in • Some features in the Plug-in Page 11
  12. 12. Swath, Grid, and Point Objects Plug-in file treeview Swath/Grid Lat/Lon display Page 12
  13. 13. AMSR-E Swath One click to convert HE2 to HE5 file format Page 13
  14. 14. AMSR-E Swath Getting Image of selected pixels in a table Getting lat/lon for a selected pixels in a table Page 14
  15. 15. AMSR-E and OMI Point objects HE2 Point Object HE5 Point Object Page 15
  16. 16. Availability • Download, Documentation, Help: HDFView: http://newsroom.gsfc.nasa.gov/sdptoolkit/ HDFView/HDFView_hdfeos_plugin.html HEG: http://newsroom.gsfc.nasa.gov/sdptoolkit/ HEG/HEGHome.html Page 16
  17. 17. Availability • Questions, Comments, Requests:  Abe_Taaheri@raytheon.com  Landover_PGSTLKIT@raytheon.com  http://www.hdfeos.org/ : HDF-EOS Forum Page 17
  18. 18. Thank You! Page 18

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