Share Email Print
cover

Proceedings Paper

Algorithms using interband cross correlation for pixel registration and jitter reconstruction in multichannel push broom imagers
Author(s): James P. Theiler; Bradley G. Henderson; Barham W. Smith
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present two algorithms for determining sensor motion of a multi- spectral push-broom imager for use in subsequent image registration. The first algorithm, termed the 'pairwise' method, performs cross-correlations between individual pairs of channels. The offsets of maximum correlation are formulated into a system of linear equations whose solution gives an estimate of the jitter function. The second algorithm performs cross-correlations between channels and a reference image called the 'baseline' which is constructed by averaging together all the channels in the image cube. An estimated jitter time series is computed for each channel, all of which are overlapped and averaged to obtain a best estimate of the jitter function. The pairwise method is more general in that it can handle a wider range of jitter scenarios. The baseline method, although more restricted, is very simple to implement, and its accuracy can be improved substantially through iteration. In this paper, we describe both methods in detail and present results of simulations performed on thermal-infrared data cubes.

Paper Details

Date Published: 29 October 1997
PDF: 11 pages
Proc. SPIE 3163, Signal and Data Processing of Small Targets 1997, (29 October 1997); doi: 10.1117/12.279531
Show Author Affiliations
James P. Theiler, Los Alamos National Lab. (United States)
Bradley G. Henderson, Los Alamos National Lab. (United States)
Barham W. Smith, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 3163:
Signal and Data Processing of Small Targets 1997
Oliver E. Drummond, Editor(s)

© SPIE. Terms of Use
Back to Top