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Proceedings Paper

Chinese seal recognition using a hybrid electro-optical filter
Author(s): Jian-Shuen Fang; Chulung Chen; Sway Wang
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Paper Abstract

We present a new technique for Chinese seal recognition using constrained energy minimization joint transform correlator (CEMJTC). Either optical or digital correlation is one of the most powerful operations for detecting the presence/absence of the seal image. The CEMJTC is proposed to improve the discrimination capability for shift- invariance and rotational-invariant seal recognition. By minimizing the average correlation energy with respect to all training seal images, while constraining the correlation peak value to a constant, a filter function is constructed. The main emphasis is to design a filter for good discriminate ability. Numerical results are presented to demonstrate the improvements. Furthermore, experimental results show the sharp correlation output profile when the seal image is correct, otherwise the correlation peak will be obviously reduced. The new technique for seal recognition shows a significant increase in high speed and detection ability.

Paper Details

Date Published: 6 July 2000
PDF: 12 pages
Proc. SPIE 4081, Optical Storage and Optical Information Processing, (6 July 2000); doi: 10.1117/12.390503
Show Author Affiliations
Jian-Shuen Fang, Yuan Ze Univ. (Taiwan)
Chulung Chen, Yuan Ze Univ. (Taiwan)
Sway Wang, Yuan Ze Univ. (Taiwan)


Published in SPIE Proceedings Vol. 4081:
Optical Storage and Optical Information Processing
Han-Ping D. Shieh; Tomas D. Milster, Editor(s)

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