Raw image received to BISAG from NRSA (National Remote Sensing Agency), Hydrabad. Acquiring raw data for geo-referencing Satellite image. Satellite Image is use in Analysis and interpretation. raw image considered to be the master image.
5.2 Geo-rectification:The Purpose of image rectification is to correct image data for destortion. Master image rectified with UTM (Universal transvers Mercator) projection system modified with Everest datum. Master image was referenced using GCP’s from 1:50,000 scale SURVEY OF INDIA (SOI) toposheet in Erdas Imagine 8.4. with Geomatric correction with polynominal order 1.
6.0
6.1
SATELLITE IMAGE INTERPRETATION:-
Classification:-
Image Classification combines visual analysis of Image data with quantitative techniques to automatically identify the features. in all cases the purpose of Classification process is to categories all pixels in a digital image in to classes or themes. This categories data are used to produce Thematic Maps or Land Cover in an Image. The classification Procedure fall in to 2 major categories 1) Supervised classification 2) Unsupervised classification. We used supervised classification to identification
6.1.1 SUPERVISED CLASSIFICATION:-
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