Chinese Optics Letters, Vol. 5, Issue 11, 628 (2007)
Color pattern recognition based on the joint fractional Fourier transform correlator
Weimin Jin* and Yupei Zhang
- Institute of Information Optics, Zhejiang Normal University, Jinhua 321004
A new system of multi-channel single-output joint fractional Fourier transform correlator (JFRTC) for color pattern recognition is proposed based on the conventional system of multi-channel single-output joint transform correlator (JTC). The theoretical analysis and optical experiments are performed. With this method, one can obtain three correlation peaks at the output plane which show a pair of desired cross-correlation peaks and one auto-correlation peak. In comparison, the conventional system leads to more correlation peaks playing a noise role in color pattern recognition.
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