1 November 2001 Color pattern recognition using fringe-adjusted joint transform correlation
Author Affiliations +
Optical Engineering, 40(11), (2001). doi:10.1117/1.1413211
A fringe-adjusted joint transform correlator (JTC) based technique for improved color pattern recognition is introduced. in the proposed technique, a real-valued fringe-adjusted filter is used to reshape the joint power spectrum to yield better correlation output. A color image is processed through three channels, and fringe-adjusted filtering is applied to each of these channels to achieve excellent correlation discrimination. The correlation outputs from these channels are then fused together to make a decision on the detection of a desired color pattern. It is also shown that the fringe-adjusted filtering can be effectively applied to a multichannel single-output JTC to obtain excellent correlation discrimination between an unknown input scene target and a reference image for all color channels. The proposed techniques can be implemented in real time for practical color pattern recognition applications. Two architectures for all-optical implementation of the proposed techniques are presented.
Mohammad S. Alam, C.N. Wai, "Color pattern recognition using fringe-adjusted joint transform correlation," Optical Engineering 40(11), (1 November 2001). http://dx.doi.org/10.1117/1.1413211

Pattern recognition

Image processing

Fourier transforms

Optical filters

Joint transforms

Optical pattern recognition

Optical engineering


Operation Of Harmonic Gyrotrons In The Submillimeter Region
Proceedings of SPIE (November 18 1989)
Fuzzy morphology induced by threshold decomposition
Proceedings of SPIE (June 30 1994)
Status and performance of HST Wide Field Camera 3
Proceedings of SPIE (October 12 2004)
JIP: Java image processing on the Internet
Proceedings of SPIE (December 22 1998)
Robust digital watermarking using random casting method
Proceedings of SPIE (December 05 2001)

Back to Top