Aim: To Georeference and rectify the provided(link at bottom) topographic sheets
Material used: ArcMap 10.2
Procedure
1. Open ArcMap 10.2 → click blank templates → ok
2. To add image : Add data → select image → ok
3. Open georeferencing toolbox. Click on customize → toolbars → check Georeferencing
4. Add control points from the georeferencing toolbar → Left click on the center of one coordinates point followed by right click →input DMS of Lon and Lat or DD for x and y (users preferences)
5. Add both latitude and longitude values
DMS
Decimal Degree(DD)
If the toposheet vanished from the interface simple from the table of content →
DMS can be converted into DD by the following equation.
DD= Degree + minutes/60 +seconds/3600
e.g 77 degree 10 min = 77.17
6. Add coordinates for the remaining 3 sides in the same manner.
7. To check RMS value for determining errors
Select view link table
8. Rectify image (Export in tiff format)
Georeferencing →rectify → select output folder → enter file name → ok
9. Open the rectified image through the add data tab.
RESULT
Additional
To change the Toposheet Lon Lat value from meter to DMS. Right click → Data frame properties → General → DMS
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