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Optical Engineering

Fast recovery of rotational symmetry parameters using gradient orientation
Author(s): Chang-Ming Sun
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Paper Abstract

Symmetry detection is important in the area of computer vision. A simple and fast algorithm for the recovery of rotational symmetry parameters is developed. The fold number of a rotationally symmetrical shape is obtained from the gradient orientation histogram of the input gray-level image using the Fourier method, based on the relationship between the periodicity of the orientation histogram and the fold number of the symmetrical shape. It takes only 0.06 s CPU time for a 256 3256 gray image on a Sun SPARC10. Both simulated and real images are tested and the results are very convincing.

Paper Details

Date Published: 1 April 1997
PDF: 5 pages
Opt. Eng. 36(4) doi: 10.1117/1.601290
Published in: Optical Engineering Volume 36, Issue 4
Show Author Affiliations
Chang-Ming Sun, CSIRO (Australia)

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