Image processing with the radial Hilbert transform: theory and experiments
Top Cited Papers
- 15 January 2000
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 25 (2) , 99-101
- https://doi.org/10.1364/ol.25.000099
Abstract
The Hilbert transform is useful for image processing because it can select which edges of an input image are enhanced and to what degree the edge enhancement occurs. However, the transform operation is one dimensional and is not applicable for arbitrarily shaped two-dimensional objects. We introduce a radially symmetric Hilbert transform that permits two-dimensional edge enhancement. We implement one-dimensional, two-dimensional, and radial Hilbert transforms with a programmable phase-only liquid-crystal spatial light modulator. Experimental results are presented.Keywords
This publication has 5 references indexed in Scilit:
- Transmission variations in liquid crystal spatial light modulators caused by interference and diffraction effectsOptical Engineering, 1999
- Analysis of the fractional Hilbert transformApplied Optics, 1998
- Optical implementation of the fractional Hilbert transform for two-dimensional objectsApplied Optics, 1997
- Fractional Hilbert transformOptics Letters, 1996
- Zone plates performing generalized Hankel transforms and their metrological applicationsOptics Communications, 1993