1. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Software Tools for Image Processing Larry Biehl, Systems Manager, PTO (biehl@purdue.edu) March 12, 2007

2. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Software for Image Processing Leica Geosystems Imagine –http://www.gis.leica-geosystems.com/ ITT (formerly RSI) ENVI –http://www.ittvis.com/envi/ –Free version: FreeLook ESRI ArcGIS with RS Extensions –http://www.esri.com/ –Free version: ArcExplorer PCI Geomatics Geomatica –http://www.pcigeomatics.com/ –Free version: FreeView

3. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Software (Continued) Definiens Professional (sold by PCI in U.S.) –http://www.definiens.com/ ER Mapper –http://www.ermapper.com/ IDRISI (sold by Clark Labs, Clark University) –http://www.clarklabs.org/ TNTmips –http://www.microimages.com/ –Free version: TNTlite

4. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Software (Continued) Copenhagen Image Processing System –http://www.geogr.ku.dk/chips/ –Free Spring (INPE, Brazil) –http://www.dpi.inpe.br/spring/ –Free MultiSpec (Purdue University) –http://dynamo.ecn.purdue.edu/~biehl/MultiSpec/ –Free Do others have another favorite??

5. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Primary Purpose of Remote Sensing Analysis Convert multispectral image with thousands or more different measurements To image with a dozen or fewer different information categories Management decisions are then made based on the information categories.

6. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue MultiSpec: Freeware Tool for Image Data Analysis Purpose: -Technology Transfer (Provide ability for other researchers to try new techniques without having to program the algorithms) -Teaching (Use in remote sensing courses; significant use now in K-12) -Research (Grad students use in research) Platforms: Macintosh and Windows Developed at Purdue University http://dynamo.ecn.purdue.edu/~biehl/MultiSpec/

7. Coordinate View Image Window Application Menu Histogram PlotGraph Window Text Output Window Project Window Sample MultiSpec Window (Windows Version)

8. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue MultiSpec Image Windows Multispectral - Display bands or channels - Data values control color Thematic - Display classification results or other themes - Data values point to color in table

9. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Tool Bar Overlay control Zoom out control Zoom in control Magnification control Selected area Zoom factor indicator Multispectral Image Window (Windows version)

10. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Example of Thematic Image Scroll Legend Down Scroll Legend Up Palette Popup Legend Class/Group Popup

11. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Recognizes: ArcView, ENVI, ERDAS *.LAN, Imagine, FastL7A, GAIA, TIFF/GeoTIFF, HDF, LAS, LARSYS MIST, LGSOWG, MacSADIE, NetCDF, PDS, Sun “Screen Dump”, TARGA, VICAR file formats. Import Data: BIL, BSQ, BIP band interleave formats; 8-, 16- & 32-bit signed/unsigned integer, 32- & 64-bit real data types; overlay shape files Histogram & Display Images Cluster: Single Pass or ISODATA algorithms Define Classes: Rectangular, Polygonal, Clusters, Mask Feature Definition: Subsets, or Optimal Subspaces Statistics Enhancement: Via Labeled & Unlabled; LOOC Classification: Spectral or Spectral-Spatial [ECHO] Results Display: Thematic and Tabular Utility Functions: Graph Spectra, Scatter Diagrams, Principal Components, Ratios, Add/Multiply Bands, Mosaicing, Changing Geometry, Visualization aids Some Analysis Features

12. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Example of Side by Side Multispectral Image Channel number and/or description

13. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Tutorials Available on Web Site 1.Display and Inspection of Image Data 2.Image Enhancement 3.Unsupervised Classification (Cluster Analysis) 4.Supervised Classification 5.Combining Separate Image Files into a Single Multispectral Image File 6.Overlay Shape Files on Image Window 7.Selecting Areas and the Coordinate View

14. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Examples of Issues to Check for When Analyzing Remote Sensing Data Data not saturatedData is saturated

15. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Issue Examples (continued) No CompressionSID 100SID 20 Original DataResampled (smoothed) Users will need to decide the tradeoff.

16. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Issue Examples (continued) Notice “stitching problem” when combining multiple images. Very much improved.

17. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Examples (continued) 4 Meter MultiSpectral Satellite Imagery Notice the color tone change in the image. This occurred when combining two images. Example provided by Nathan Watermeier

18. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Acknowledgements Funding for the research leading to the development of MultiSpec was provided by NASA The Globe Program provided the support for the initial Windows versions of MultiSpec

19. IGIC Remote Sensing Workshop: 3/12/2007 Image Processing Tools: Larry Biehl, Purdue Comparison of Classes Image Space Feature Space Veg Soil Spectral Space Soil Veg Geographic Orientation Relate to Physical Basis for Response For Use in Pattern Analysis