The photorefractive two-beam coupling joint transform correlator combines two features. The first is embedded semi-adaptive optimality, which weighs the correlation against clutter and noise in the input, and the second is the intrinsic dynamic range compression nonlinearity, which improves several metrics simultaneously without metric trade-off. Although the two beam coupling correlator was invented many years ago, its outstanding performance was recognized on only relatively simple images. There was no study about the performance of this correlator on complicated images and using different figures of merit. In this paper, the study is extended to more complicated images. For the first time, to our knowledge, we demonstrate simultaneous improvement in metrics performance without metric trade-off. The performance was evaluated compared to the classical joint transform correlator. A typical experimental result to validate the simulation results was also shown in this work. The best performing operation parameters were identified to guide the experimental work and for future comparison with other well-known optimal correlation filters.
© 2016 Optical Society of AmericaFull Article | PDF Article
21 September 2018: A correction was made to the author listing.
OSA Recommended Articles
George Asimellis, Mark Cronin-Golomb, Jehad Khoury, Jonathan Kane, and Charles Woods
Appl. Opt. 34(35) 8154-8166 (1995)
Hanni Inbar, Naim Konforti, and Emanuel Marom
Appl. Opt. 33(20) 4434-4443 (1994)
Xianlie Huang, Hongkai Lai, and Zehua Gao
Appl. Opt. 36(35) 9198-9204 (1997)