Late in 1995 we organized a hyperspectral data acquisition using the Naval Research Laboratory's Hyperspectral Digital Imagery Collection Experiment sensor system over Fort Hood, Texas. This acquisition resulted in hyperspectral data with a nominal 2 meter ground sample distance collected with 210 spectral samples per pixel.This paper describes current quantitative classification results for man-made and natural materials using 14 surface material classes over selected test areas within Fort Hood. We discuss the issues encountered in radiometric effects due to changing solar illumination and atmospheric conditions during the acquisition. We also describe our approach to image registration and geopositioning, using a full photogrammetric block adjustment solution.
This paper discusses ongoing research in the analysis of airborne hyperspectral imagery with application to cartographic feature extraction and surface material attribution. Preliminary results, based upon the processing and analysis of hyperspectral data acquired by the Naval Research Laboratory's (NRL) Hyperspectral Digital Imagery Collection Experiment (HYDICE) over Fort Hood, Texas in late 1995, are shown.Significant research issues in geopositioning, multisensor registration, spectral analysis, and surface material classification are discussed. The research goal is to measure the utility of hyperspectral imagery acquired with high spatial resolution (2 meter GSD) to support automated cartographic feature extraction. Our hypothesis is that the addition of a hyperspectral dataset, with spatial resolution comparable to panchromatic mapping imagery, enables opportunities to exploit the inherent spectral information of the hyperspectral imagery to aid in urban scene analysis for cartographic feature extraction and spatial database population. Test areas selected from the Fort Hood dataset will illustrate the process flow and serve to show current research results.
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