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Changing image of correlation optics: introduction [PDF]

Applied Optics, 2016
This feature issue of Applied Optics contains a series of selected papers reflecting recent progress of correlation optics and illustrating current trends in vector singular optics, internal energy flows at light fields, optical science of materials, and
Herbert Schneckenburger, Tim Lee, Oleg Angelsky   +2 more
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Apochromatic optical correlation

Optics Letters, 2000
Optical correlation, or matched filtering, can now be applied more widely than before, because the light is now allowed to be totally incoherent, spatially and spectrally. Two such correlators were demonstrated recently. Their state of chromatic correction can be called achromatic, since the scaling error has two zero crossings within the visible range
A, Pe'er, D, Wang, A W, Lohmann, A A, Friesem   +3 more
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Optical projection correlations

Applied Optics, 1988
The correlation of several 1-D projections of a 2-D image are considered for pattern recognition. A theoretical analysis and SNR comparison to 2-D correlations are provided with successful simulated results that show that the use of two or three 1-D correlations can identify and discriminate the 26 characters in the alphabet.
D P, Casasent, J H, Song
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Differentiating optical correlator

Optics Letters, 1995
We introduce a new filter for an optical correlator that produces the spatial derivative of the optical correlation between an input object and a reference object. The derivative signal has a dark spot at the center of the correlation output. The width of this dark spot is narrower than the width of the conventional correlator bright spot and provides ...
J A, Davis, L L, Haavig, D M, Cottrell, X M, Wang, G G, Mu   +4 more
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Spatial statistical optics and spatial correlation holography: A review

Optical Review, 2014
Classical statistical optics is revisited with the aim of introducing the concept of spatial statistical optics that places particular focus and special emphasis on spatial statistics of the optical field, rather than on their temporal statistics.
Rakesh Kumar Singh, Dinesh N Naik
exaly   +1 more source

Scanning optical correlator

Optics Letters, 1981
The operation of a scanning optical correlator is described and demonstrated. The device is shown to combine the advantages of a coherent correlator, which makes preprocessing operations easy to realize, with the advantages of direct-image-casting correlators, which are insensitive to setup misalignment and imperfections and do not require the ...
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Moiré optical spatial correlator

Optics Letters, 1984
A new optical method to obtain the spatial-correlation integral of moiré maps is described and demonstrated. This method permits the direct and quantitative determination of the optical spatial correlation between two objects. The method can be applied to any optical quantity mapped by any moiré technique.
O, Kafri, T, Chin, D F, Heller
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Optical correlator tracking nonlinearity

Applied Optics, 1987
Non linearite observee en utilisant un correlateur optique de Vanderlugt etalon comme poursuiveur de corps ...
D A, Gregory, J C, Kirsch, J L, Johnson
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One-Bit Optical Correlator

Applied Optics, 1973
A real-time optical correlator based on the principle of one-bit correlation, often used to facilitate the construction of real-time digital signal processors, is shown to have a greater immunity to mechanical noise than a comparable analog optical correlator.
G J, Aitken, D R, Carter
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Experiments on nonlinear optical correlation

Conference Proceedings., IEEE International Conference on Systems, Man and Cybernetics, 2003
The authors present experiments on nonlinear joint transform optical correlation. This processor is joint power spectrum based and does not use any filters. In this technique both the input signal and the processing function are displayed side by side at the input plane of the processor.
Bahram Javidi, Nick Massa, Jack Ruiz, Carol Ruiz   +3 more
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