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 Map  to Image Georeferencing using ERDAS software
 

Map to Image Georeferencing using ERDAS software

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Georeferencing using ERDAS software

Georeferencing using ERDAS software

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     Map  to Image Georeferencing using ERDAS software Map to Image Georeferencing using ERDAS software Presentation Transcript

    • MAP TO IMAGE GEOREFERENCING By Swetha A 5WD12CGI15
    • Run ERDAS software  Open a new viewer i.e. viewer1 
    •  Open the satellite image which needs to be georeferenced.
    • Open a new viewer i.e. viewer2  For this viewer open the toposheet which is already georeferenced. 
    •  In first viewer1 Go to raster option click geometric corrections.  Select polynomial option as geometric model. 
    •  Click add/ change projection .  Select geographic(lat/lon) as projection type and Everest as spheroid name.  Close the polynomial model.
    •  A GCP tool box will be shown as below.
    • Use the symbol in the in GCP tool box to mark the ground control points (GCP’S ) as shown.  Mark at least 4 GCP’s to get a georeferenced image. 
    •  4 GCP points are shown below .
    • Use symbol in tools to do resampling method .  Give output file name select required resample method n click ok. 
    •  After performing resampling open the new output file created in different viewer.
    •  The image can be verified using swipe command.  In the viewer with georeferenced image can be opened with raster options fit to frame and background transparent.
    •  This will be the result
    •  Further validation can be done using swipe command ..
    •  The swipe position can be moved to see the overlap of the features.
    • THANKS