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High Resolution 1:10,000 scale Mapping Strategy of Multi ... - NDMA

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is a significant reduction in data rate and volume. FSI extracts and saves only the<br />

information that is in the raw data. The information is contained in the shape <strong>of</strong> the<br />

spectral curves. The rate at which data is produced by an FSI system is proportional<br />

to the amount <strong>of</strong> information in the scene/image.<br />

Full Spectral Imaging, along with empirical reflectance retrieval and<br />

autonomous remote sensing are the components <strong>of</strong> the new system for remote<br />

sensing. the new system for remote sensing could be the successor to the Landsat<br />

series <strong>of</strong> satellites <strong>of</strong> the Landsat program. The concepts mentioned above have<br />

been developed in collaboration with many experts, most <strong>of</strong> whom have little to<br />

nothing to do with traditional remote sensing.<br />

Satellite Imaging uses advanced image processing<br />

techniques from various satellite sensors such as<br />

color and panchromatic image data processing,<br />

orthorectification, Pan sharpening with image data<br />

fusion, image enhancements, georeferencing,<br />

mosaicing, and color/gray <strong>scale</strong> balancing and is used<br />

in various applications.<br />

Specialized imaging processing techniques<br />

Figure App 9.1: Geometry <strong>of</strong><br />

Direct Geo-referencing<br />

are required to convert the apparent surface reflectance before analysis can take<br />

place. Atmospheric correction such as ATCOR (Atmospheric and Topographic<br />

Correction) techniques are used to retrieve physical parameters <strong>of</strong> the earth's<br />

surface such as atmospheric conditions (emission, temperature), thermal and<br />

atmospheric radiance and transmittance functions to simulate the simplified<br />

properties <strong>of</strong> a 3D atmosphere.<br />

Classification and feature extraction methods have been commonly used for<br />

many years for the mapping <strong>of</strong> minerals and vegetative cover <strong>of</strong> multispectral and<br />

hyperspectral data sets. Vector data structure is essential to most mapping, GIS<br />

(geographic information system), and CAD (computer aided design) s<strong>of</strong>tware<br />

packages, which might export data to vector formats such as shape files, DXF,<br />

73

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