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INTERPRETING DIGITAL IMAGES
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Interpreting Digital Images (IDI) is part of the Global Systems Science project's participation in the Digital Library for Earth Science Education. It is included with every GSS CD-ROM which you can order online. IDI consists of a Teacher Guide, a Student Booklet, and seven software programs. Current versions of the IDI Teacher Guide and Student Book can be downloaded from the GSS Download Site. (This is free, but GSS password is required).

The goal of the IDI unit is to enable students to understand what they are seeing in Earth images and analyze them qualitatively and quantitatively for changes in ecosystems over time, including effects of urban growth, fires, volcanic eruptions, etc. A complete set of satellite images accompanies the IDI unit for exercises, and the software tools can be used with ANY jpeg image files, so students would be able to do their own investigations after learning the basic principles.

IDI Activities include:

ACTIVITY 1 Three-Color Light

  • Game_TriColor
  • MixingColor
  • Report_Tricolor
  • TriColor

ACTIVITY 2 Pictures and Colors

  • ColorPicture
  • ImageAnalysis
  • MergePictures
  • PixelView
  • Small Screen Software
  • SplitColors


ACTIVITY 4 Displaying Invisible

  • FalseColor


ACTIVITY 5 Using Analysis Tool

  • SurfaceType

ACTIVITY 6 Satellite Analysis

  • ImageAnalysis
  • LandsatAnalysis
  • VegetationAnalysis
  • Forest_Analysis (For New World View)

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For latest IDI software modules, visit the Measuring Vegetation Health website software pages.

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Lawrence Hall of Science    © Wednesday, 27-Aug-2008 21:41:20 PDT The Regents of the University of California    Contact GSS    Updated Monday, 19-Dec-2005 15:19:26 PST