Analysis of HYDICE noise characteristics and their impact on subpixel object detection

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Title: Analysis of HYDICE noise characteristics and their impact on subpixel object detection
Author: Nischan, Melissa; Kerekes, John; Baum, Jerrold; Basedow, Robert
Abstract: A number of organizations are using the data collected by the HYperspectral Digital Imagery Collection Experiment (HYDICE) airborne sensor to demonstrate the utility of hyperspectral imagery (HSI) for a variety of applications. The interpretation and extrapolation of these results can be influenced by the nature and magnitude of any artifacts introduced by the HYDICE sensor. A short study was undertaken which first reviewed the literature for discussions of the sensor' s noise characteristics and then extended those results with additional analyses of HYDICE data. These investigations used unprocessed image data from the onboard Flight Calibration Unit (FCU) lamp and ground scenes taken at three different sensor altitudes and sample integration times. Empirical estimates of the sensor signal-to-noise ratio (SNR) were compared to predictions from a radiometric performance model. The spectral band-to-band correlation structure of the sensor noise was studied. Using an end-to-end system performance model, the impact of various noise sources on subpixel detection was analyzed. The results show that, although a number of sensor artifacts exist, they have little impact on the interpretations of HSI utility derived from analyses of HYDICE data.
Description: "Analysis of HYDICE noise characteristics and their impact on subpixel object detection," Proceedings of Imaging Spectrometry V. International Society of Optical Engineers. Held in Denver, Colorado:19-21 July 1999. Copyright 1999 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of Imaging Spectrometry V, vol.3753 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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Date: 1999-07-19

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