GLIDER provides interactive image data exploration and unsupervised classification capabilities. Three existing tools--ADaM, World Wind and IVICS--are being incorporated as plug-ins within the Eclipse RCP. GLIDER currently allows capabilities for metadata viewing, histogram plots for a selected area within an image, generation of spectral profile plots for any transect and the ability to view scatter plots between different spectral bands for user-selected regions within the image. Users can also apply a suite of image processing and clustering algorithms on the satellite data being visualized within GLIDER.

System Requirements

All platforms:

• Minimum Java 6 (JVM 1.6) 32 bit on Windows and Linux
• 3d graphics card

OS specific requirements:

• Macosx
  Requires Java 6 (64 bit) be installed on system, JVM 1.6 must be set to default using system Java preferences utility (run Applications->utilities->java preferences and move Java SE 6 to top of preference list for applications)
• Linux
  Opengl

Download GLIDER

Please help us find and fix any bugs and improve the product. Report any bugs or problems here!
NOTE: Workflow composer on the Mac v4b has not been fully tested as yet!

NOTE: If you are on a windows platform and are having problems with Earth View, please check this link regarding updating your graphic card drivers

Earth View Display on Windows - Graphic Driver Issues

GLIDER v3.0-beta New Features

Features

• Band Math capability
  • Allows users to specify any mathematical equation and bind different spectral bands to the variables in the equation
  • Can be used to create different indices such as NDVI
• WMS Layer to Earth View
  • Provides a list of existing WMS available
  • Allows user to specify a new WMS layer that is displayed on the Earth View
• Reorganized Menu
  • Operations are now categorized and properly organized in the menu
• New Algorithms
  • Image Enhancement
    • Histogram Equalization                
      • Feature:
        •  Moments                       
        • GLCM                         
        • GLRL                         
      • Filtering
        • Gabor                         
      • Segmentation
        • Threshold                    
        • Kapur                          
        • Otsu                          
        • Two Modal                      
        • Mark Region                    
        • Quantize                              
        • Band Math Evaluator                   
    • Pattern Recognition
      • Unsupervised Classification
        • DBSCAN                         
      • Rule based
        • Association Rules             
      • Utilities
        • Normalizer Train   
        • Normalizer Apply 
        • Sample                       
        • Accuracy             
        • Remove Attributes             
        • Principal Components Train   
        • Principal Components Apply    
    • Utilities
      • Convert Gif to Image        
      • Convert Image to Gif                 
        
• Coming Soon - GLIDER documentation!!

GLIDER v2.1-beta Features and Bug Fixes

Bug fixes

• Memory issues while adding multiple large images to the Earth View

Features

• Image view process tracker
  • Updated to keep track of all algorithms executed through GLIDER
  • Processes running the algorithms can be moved to background and popped back when required
• Earth View
  • Move layers to front or back by reordering them via the in-screen layermanager list
  • Added world political boundaries layer

GLIDER v2.0-beta Features and Bug Fixes

• Improved Internal data model is now based on netCDF (note: version 1b files are no longer compatible and must be recreated)
• Improved file I/O performance and improved GSF file conversion speed
• MODIS calibration is now done directly in Java using Java netCDF
• MODIS calibration is now much faster (about 1-2 minutes)
• Users can start running the (Image processing and Clustering) algorithms, push it into a background execution mode and continue interacting with the application
• Status of such background processes can be tracked with in a separate view accessible thru the menu "Window -> Process Menu Tracker" in the Image View
  Minor bug fixes / enhancements:
• Channels can be selected on the R G B or Grayscale tabs in the layer editor just by clicking on the channel in the list, instead of clicking on an additional button as before
• Histograms and Scatter plots will show actual channel labels instead of just RGB
• For grayscale images, scatter plot will show only one plot instead of 3 identical plots
  

GLIDER v1.0-beta Feature List

• Satellite image calibration
  • MODIS
    • Reflectance
    • Brightness temperature
    • Radiance
  • IVICS GSF conversion to GLIDER
    • Any images calibrated using IVICS can be imported in GLIDER
  • More to come
• Image display
  • Grey scale
  • Three channel  color composite
  • Image enhancements
    • Linear contrast stretch
    • Grey scale inversion (flip)
    • Histogram equalization
  • Pan and scroll
  • Earth view
    • 3-D globe display using World Wind
    • Zoom, pan, and rotate in 3D
    • Display multiple images as layers
    • Selectable layer visibility
    • Overlay vector and model data in 3D (in progress)
• Image analysis tools
  • Histograms
    • Three currently displayed channels
    • User selectable region, visible image, entire image
  • Scatter plots
    • Two of currently displayed channels
    • User selectable region, visible image, entire image
  • Profiles
    • Spectral profile
      • Plot of multiple channels at single pixel location
      • Multiple points can be profiled on same plot
    • Linear transect
      • Three currently displayed channels
      • Plot of pixels along user selected line
• Image processing algorithms
  • Median filter
  • Mode filter
  • Energy
  • Pulse coupled neural network
  • Boundary
  • Dilation
  • Erosion
  • Spatial filter
  • Resample
  • More to come
• Clustering/Unsupervised classification algorithms
  • Isodata
  • Maximin
  • Hierarchical
  • Kmeans
  • Kmediods
  • More to come