Digitising using ERDAS software

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digitizing of a Raster using ERDAS software

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Digitising using ERDAS software

  1. 1. DIGITIZATION USING ERDAS By SWETHA.A 5WD12CGI15
  2. 2. Run ERDAS software  Open a new viewer i.e. viewer1 
  3. 3.  Open a Raster image(JIFF Format)
  4. 4.  Open a new vector layer
  5. 5. POLYGON FEATURE DIGITIZATION
  6. 6.  Make sure to open the new vector layer in .shp (shapefile) format and name it.
  7. 7.  Select shapefile type as polygon.
  8. 8.  Vector tool box appears as shown below..
  9. 9.  Use symbol to draw polygon features which are present on satellite image.
  10. 10.  Output file only with polygon features are depicted.
  11. 11. LINE FEATURE DIGITIZATION
  12. 12.  Make sure to open the new vector layer in .shp (shapefile) format and name it.
  13. 13.  Select shapefile type as “Arc Shape(Line)”.
  14. 14.  Vector tool box appears as shown below..
  15. 15.  Use symbol to draw line features which are present on satellite image.
  16. 16.  Output file only with Line features are depicted.
  17. 17. POINT FEATURE DIGITIZATION
  18. 18.  Make sure to open the new vector layer in .shp (shapefile) format and name it.
  19. 19.  Select shapefile type as “Arc Shape(Line)”.
  20. 20.  Vector tool box appears as shown below..
  21. 21.  Use symbol to draw line features which are present on satellite image.
  22. 22.  Output file only with „Point‟ features are depicted.
  23. 23. COMBINATION OF ALL LAYERS
  24. 24. THANKS

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