Softwares: Arc View ver. 3.2 and ERDAS IMAGINE ver. 9.1; Hardwares: Lenovo PC was used.
Enlarged colored map of study area was used for assistance in ground truth collection.
A schematic diagram of the present study is shown in Fig. 1.
A bird’s eye view of the whole of the study area acquired during 7-10th June 2010. During the aforesaid
period, attempts were made to digitize the image into distinctly separable polygons. IKONOS, MS and PAN
subscenes (already geo-referenced) have been used as base data fir on screen digitization for visual
interpretation using Arc View GIS package. Although the satellite data was also already enhanced, limited
enhancement has been attempted in ERDAS Imagine through histogram equalization for better
discriminability of various vegetation units. Spectral reflectance (DN values) of vegetation types were assessed
in different wavelength (BGRIR) using ERDAS. The attribute classes were generated completely during the
reconnaissance survey and ground truth collection.