Open AccessObject recognition using cylindrical harmonic filter
Author(s) -
Jáder Enrique Guerrero Bermúdez
Publication year - 2004
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.003046
Subject(s) - filter (signal processing) , optics , harmonic , rotation (mathematics) , fourier transform , physics , plane (geometry) , acoustics , mathematics , computer science , computer vision , geometry , mathematical analysis
We present the cylindrical harmonic filter for three-dimensional (3D) discrete correlation between range data. The filter guarantees invariance of the correlation peak intensity under target rotation around z-axis. It can be considered a harmonic decomposition, in cylindrical coordinates, of the 3D Fourier spectrum of the target. Some simulation results confirm the in-plane rotation invariance and the discrimination of the filter.