A Hybrid Approach to Super Resolution Mapping for Water-Spread Area and Capacity Estimation of Reservoir Using Satellite Image (India)
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For proper monitoring and scheduling of the supply of drinking water in reservoirs, it is necessary to carry out the capacity surveys. Remote sensing techniques can be used to estimate the capacity of the reservoirs in an inexpensive and less laborious way. In this paper, a super resolution mapping based on hybrid approach was developed and applied to Landsat OLI image of the Puzhal reservoir, Chennai city, southern India and the reservoir water-spread area was estimated. The estimated water-spread was used to find the capacity of the reservoir using Trapezoidal formula. The hybrid approach uses New Fuzzy Cluster Centroid (NFCC) algorithm for sub-pixel mapping and multi-objective genetic algorithm for super resolution mapping. The super resolution mapping is an advanced classification technique which accurately maps the location of classes within a pixel. The capacity determined from the image processing technique is compared with that estimated from the field survey data with a meagre 1.35% error. Hence, it is observed that the super resolution mapping is a prominent methodology to estimate the water-spread area of the reservoir which in turn increases the accuracy of the estimation capacity of the reservoir.
KeywordsSub-pixel mapping Super resolution mapping Satellite image Water-spread area