DIGITIZATION USING ERDAS

By

SWETHA.A

5WD12CGI15

Run ERDAS software Open a new viewer i.e. viewer1

Open a Raster image(JIFF Format)

Open a new vector layer

POLYGON FEATURE DIGITIZATION

Make sure to open the new vector layer in .shp (shapefile) format and name it.

Select shapefile type as polygon.

Vector tool box appears as shown below..

Use symbol to draw polygon features which are present on satellite image.

Output file only with polygon features are depicted.

LINE FEATURE DIGITIZATION

Make sure to open the new vector layer in .shp (shapefile) format and name it.

Select shapefile type as “Arc Shape(Line)”.

Vector tool box appears as shown below..

Use symbol to draw line features which are present on satellite image.

Output file only with Line features are depicted.

POINT FEATURE DIGITIZATION

Make sure to open the new vector layer in .shp (shapefile) format and name it.

Select shapefile type as “Arc Shape(Line)”.

Vector tool box appears as shown below..

Use symbol to draw line features which are present on satellite image.

Output file only with ‘Point’ features are depicted.

COMBINATION OF ALL LAYERS

THANKS