2-DIMENSIONAL DIRECTIONAL WAVELETS IN IMAGE-PROCESSING

Authors
ANTOINE JP VANDERGHEYNST P MURENZI R
Citation
Jp. Antoine et al., 2-DIMENSIONAL DIRECTIONAL WAVELETS IN IMAGE-PROCESSING, International journal of imaging systems and technology, 7(3), 1996, pp. 152-165
Citations number
38
Categorie Soggetti
Optics,"Engineering, Eletrical & Electronic
Journal title
International journal of imaging systems and technology → ACNP
ISSN journal
08999457
Volume
7
Issue
3
Year of publication
1996
Pages
152 - 165
Database
ISI
SICI code
0899-9457(1996)7:3<152:2DWII>2.0.ZU;2-U
Abstract
The two-dimensional (2-D) continuous wavelet transform (CWT) is charac terized by a rotation parameter, in addition to the usual translations and dilations. This enables is to detect edges and directions in imag es, provided a directional wavelet is used. First we review the genera l properties of the 2-D CWT and describe several useful representation s. We describe various classes of wavelets, including the directional ones. Then we turn to the problem of wavelet calibration, in particula r, the evaluation of the scale and angle resolving power of a wavelet. Finally we discuss several applications of directional wavelets. (C) 1996 John Wiley & Sons, Inc.