Information efficiency in hyperspectral imaging systems

Stephen E. Reichenbach, Luyin Cao, Ram Mohan Narayanan

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this work we develop a method for assessing the information density and efficiency of hyperspectral imaging systems that have spectral bands of nonuniform width. Imaging system designs with spectral bands of nonuniform width can efficiently gather information about a scene by allocating bandwidth among the bands according to their information content. The information efficiency is the ratio of information density to data density and is a function of the scene's spectral radiance, hyperspectral system design, and signal-to-noise ratio. The assessment can be used to produce an efficient system design. For example, one approach to determining the number and width of the spectral bands for an information-efficient design is to begin with a design that has a single band and then to iteratively divide a band into two bands until no further division improves the system's efficiency. Two experiments illustrate this approach, one using a simple mathematical model for the scene spectral-radiance autocorrelation function and the other using the deterministic spectral-radiance autocorrelation function of a hyper-spectral image from NASA's Advanced Solid-State Array Spectrora-diometer. The approach could be used either to determine a fixed system design or to dynamically control a system with variable-width spectral bands (e.g., using on-board processing in a satellite system).

Original languageEnglish (US)
Pages (from-to)347-353
Number of pages7
JournalJournal of Electronic Imaging
Volume11
Issue number3
DOIs
StatePublished - Jul 1 2002

Fingerprint

Imaging systems
Systems analysis
spectral bands
systems engineering
radiance
Autocorrelation
autocorrelation
NASA
Signal to noise ratio
Satellites
Mathematical models
Bandwidth
division
Hyperspectral imaging
mathematical models
signal to noise ratios
Processing
solid state
bandwidth
Experiments

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Reichenbach, Stephen E. ; Cao, Luyin ; Narayanan, Ram Mohan. / Information efficiency in hyperspectral imaging systems. In: Journal of Electronic Imaging. 2002 ; Vol. 11, No. 3. pp. 347-353.
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Information efficiency in hyperspectral imaging systems. / Reichenbach, Stephen E.; Cao, Luyin; Narayanan, Ram Mohan.

In: Journal of Electronic Imaging, Vol. 11, No. 3, 01.07.2002, p. 347-353.

Research output: Contribution to journalArticle

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