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BLUR INVARIANT REGISTRATION OF ROTATED, SCALED AND SHIFTED IMAGES
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BibTeX
@MISC{Ojansivu_blurinvariant,
author = {Ville Ojansivu},
title = {BLUR INVARIANT REGISTRATION OF ROTATED, SCALED AND SHIFTED IMAGES},
year = {}
}
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Abstract
In this paper, we propose a blur invariant image registra-tion method that can be used to register rotated, scaled and shifted images. The method is invariant to centrally symmet-ric blur including linear motion and out of focus blur. The method correlates log-polar sampled phase-only bispectrum slices, which are modified for blur invariance, to estimate ro-tation and scale parameters. Translation parameters are es-timated using a blur invariant version of phase correlation. An additional advantage of using the phase-only bispectrum is the invariance to uniform illumination changes. We present also results of numerical experiments with comparisons to similar registration methods which do not possess blur in-variance properties. The results show that the image regis-tration accuracy of our method is much better when images are blurred. 1.
Keyphrases
blur invariant registration rotated scaled shifted image translation parameter image regis-tration accuracy numerical experiment phase correlation log-polar sampled phase-only bispectrum slice blur invariant version additional advantage phase-only bispectrum scale parameter blur invariance focus blur similar registration method symmet-ric blur illumination change blur invariant image registra-tion method in-variance property linear motion
