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Proceedings Paper

Image registration using wavelet techniques
Author(s): Harold S. Stone; Jacqueline Le Moigne; Morgan McGuire
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Paper Abstract

The objective of this paper is to do fast image registration by progressively registering wavelet representations at different resolutions. It is well known that some subbands of wavelet representations are sensitive to small translations of an image. The energy in some subbands of wavelet representations are sensitive to small translations of an image. The energy in some subbands can move entirely out of the subband into other subbands when forming wavelet representations of shifted versions of an image. This seems to preclude the practical use of wavelet representations for image registration. In this paper we show that registration with wavelet techniques can be done effectively, and show this by examining the sensitivity of wavelet representations to image translations. Experiments on general mathematical modes and actual satellite data produced these findings: 1. Registration using a wavelet with a block size of B pixels is robust under image translation for features that extend at least 2B pixels. Distortion from translation causes the peak correlation in the low-pass subband to vary only between roughly 0.8 and 1.0, with an average in excess of 0.9 for features larger than 2B. 2. The high-pass band is less robust than the low-pass subband. Edge information at low resolution can best be used by using the high-pass subband of a low-resolution image created by recursive low- pass filtering of the original image. For this case, translation distortion drops the correlation to a range from 0.2 to 0.8, which is low in some cases but still useful on average for registration. 3. There is little difference in correlations produced from Haar and Daubechies wavelet transforms. 4. The mathematical model and the experiments with areal image gave consistent results.

Paper Details

Date Published: 1 March 1998
PDF: 10 pages
Proc. SPIE 3240, 26th AIPR Workshop: Exploiting New Image Sources and Sensors, (1 March 1998); doi: 10.1117/12.300048
Show Author Affiliations
Harold S. Stone, NEC Research Institute (United States)
Jacqueline Le Moigne, NASA Goddard Space Flight Ctr. (United States)
Morgan McGuire, Consultant (United States)


Published in SPIE Proceedings Vol. 3240:
26th AIPR Workshop: Exploiting New Image Sources and Sensors
J. Michael Selander, Editor(s)

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