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Proceedings Paper

Achieving real-time LoG filtering
Author(s): Jesse S. Jin; Yan Gao
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Paper Abstract

A recursive algorithm has been developed for LoG filtering. We use an analytic method to obtain the z-transform of LoG function in a rational function form. The structure of the recursive filters is defined by the order of rational functions. The computational complexity of recursive filtering depends on the number of poles and zeros of the transfer function, i.e., on the structure of the recursive filter. It is independent of the size of the filter, and thus has a substantial saving in computation. The algorithm gives a constant computation complexity per pixel. Various images have been tested. A general method of designing high order recursive filters is also given.

Paper Details

Date Published: 5 March 1996
PDF: 6 pages
Proc. SPIE 2661, Real-Time Imaging, (5 March 1996); doi: 10.1117/12.234649
Show Author Affiliations
Jesse S. Jin, Univ. of New South Wales (Australia)
Yan Gao, Univ. of New South Wales (Australia)

Published in SPIE Proceedings Vol. 2661:
Real-Time Imaging
Phillip A. Laplante; Alexander D. Stoyenko; Divyendu Sinha, Editor(s)

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