Method for extraction of a characteristic feature of a contour image

Authors
Niedziela, T Stankiewicz, A Szymcak, R Swietochowski, M
Citation
T. Niedziela et al., Method for extraction of a characteristic feature of a contour image, OPT APPL, 29(4), 1999, pp. 573-581
Citations number
12
Categorie Soggetti
Optics & Acoustics
Journal title
OPTICA APPLICATA
ISSN journal
00785466 → ACNP
Volume
29
Issue
4
Year of publication
1999
Pages
573 - 581
Database
ISI
SICI code
0078-5466(1999)29:4<573:MFEOAC>2.0.ZU;2-D
Abstract
A method for extraction of a set of invariant characteristic features is pr oposed and examples of its application are presented in the paper. The imag e features are connected with angles between arbitrary line segments - the fragments of the contour. The information of spatial orientation of contour segments is obtained from the behaviour of the image gradient on the conto ur. The angles between segments are calculated by means of operations on th e histogram of contour angles.