| Issue |
Europhys. Lett.
Volume 59, Number 6, September II 2002
|
|
|---|---|---|
| Page(s) | 814 - 819 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2002-00115-8 | |
| Published online | 01 September 2002 | |
Synchronization-based image edge detection
1
Department of Computational Science,
National University of Singapore
Singapore 117543, Singapore
2
Department of Mathematics, Michigan State
University East Lansing, MI 48824, USA
Received:
14
January
2002
Accepted:
20
June
2002
This letter proposes a novel image edge detection algorithm based on the difference of two synchronizing spatially extended nonlinear dynamical systems. The time evolution of each system is identified as a low-pass filtering process, whereas the difference of two synchronizing states is identified as the result of high-pass filtering. Two systems are weakly coupled and allowed to take a common image as their initial value, but have different time scales in their dynamical motions. Results are compared with those of standard image processing schemes. Some of the best image edges could be obtained by an appropriate balance between synchronization and desynchronization.
PACS: 05.45.Xt – Synchronization; coupled oscillators / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems / 07.05.Pj – Image processing
© EDP Sciences, 2002
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