digitizing of a Raster using ERDAS software

1. DIGITIZATION USING ERDAS
By
SWETHA.A
5WD12CGI15

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

3. 
Open a Raster image(JIFF Format)

4. 
Open a new vector layer

5. POLYGON FEATURE DIGITIZATION

6. 
Make sure to open the new vector layer in
.shp (shapefile) format and name it.

7. 
Select shapefile type as polygon.

8. 
Vector tool box appears as shown below..

9. 
Use
symbol to draw polygon features which are
present on satellite image.

10. 
Output file only with polygon features are depicted.

11. LINE FEATURE
DIGITIZATION

12. 
Make sure to open the new vector layer in
.shp (shapefile) format and name it.

13. 
Select shapefile type as “Arc Shape(Line)”.

14. 
Vector tool box appears as shown below..

15. 
Use
symbol to draw line features which are
present on satellite image.

16. 
Output file only with Line features are depicted.

17. POINT FEATURE
DIGITIZATION

18. 
Make sure to open the new vector layer in
.shp (shapefile) format and name it.

19. 
Select shapefile type as “Arc Shape(Line)”.

20. 
Vector tool box appears as shown below..

21. 
Use
symbol to draw line features which are
present on satellite image.

22. 
Output file only with „Point‟ features are depicted.

23. COMBINATION OF ALL LAYERS

24. THANKS