Page 6 - GVMP

Geo-referencing

Common points are identified on the PAN satellite image and scanned map where the TICs/GCPs are to be

located. The village map is geo-referenced to the image using sufficient number of GCPs. The coverage is

transformed into the new co-ordinate system, and the projection parameters added to the transformed coverage so as

to make it compatible with other spatial database.

Edge Matching and Mosaicing

➢ The IRS-PAN image with spatial resolution of 5.8 m, is displayed in the backdrop during the edge matching

process.

➢ The boundary feature that best fits the image is taken as reference.

➢ The boundary feature that is under lapping or overlapping on the fitting feature is adjusted using the background

image as the reference.

➢ After edge matching, the duplicate boundary is eliminated to keep only one single boundary.

➢ After the edge matching process the village maps are mosaiced into one single tahsil cover. Another coverage

containing only the village outer boundaries along with a label of the village code is created separately by

extracting the outer boundaries of villages from the mosaiced cover to form the village map of the districts

eventually leading to that of the State.

MRSAC,Nagpur ©®
MRSAC,Nagpur ©®