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Proceedings Paper

The Importance Of Spatial Frequency And Orientation In Image Decomposition And Coding
Author(s): E. Shlomot; Y. Y. Zeevi; W. A. Pearlman
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Paper Abstract

A scheme is proposed for image decomposition into components having spatial frequency band and orientation selectivity characteristic of the visual system. The Hexagonal-discrete-Fourier-transform (HDFT) of an hexagonally sampled image is partitioned into 36 bands, each of one octave and 30 degrees of angular orientation. Computational results of such image decomposition exhibit self-similarity of edge distribution, along the pyramidal structure of the spatial frequency components, in each of the six orientations. A combination of coding scheme, which reduces the apparent redundancy, and efficient bit reallocation procedure achieves good image reconstruction with data transmission rate of about 1.0 bits/pixel.

Paper Details

Date Published: 13 October 1987
PDF: 7 pages
Proc. SPIE 0845, Visual Communications and Image Processing II, (13 October 1987); doi: 10.1117/12.976499
Show Author Affiliations
E. Shlomot, Israel Institute of Technology (Israel)
Y. Y. Zeevi, Israel Institute of Technology (Israel)
W. A. Pearlman, R.P.I. - Rensselaer Polytechnic Institute (United States)


Published in SPIE Proceedings Vol. 0845:
Visual Communications and Image Processing II
T. Russell Hsing, Editor(s)

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