Results 271 to 280 of about 2,943,799 (310)
Some of the next articles are maybe not open access.
SPIE Proceedings, 1989
In the past 15 years, a dozen or so designs have been proposed for compact optical correlators. Of these, maybe one-third of them have actually been built and only a few of those tested. This paper will give an overview of some of the systems that have been built as well as mention some promising early and current designs that have not been built.
Don A. Gregory, James C. Kirsch
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In the past 15 years, a dozen or so designs have been proposed for compact optical correlators. Of these, maybe one-third of them have actually been built and only a few of those tested. This paper will give an overview of some of the systems that have been built as well as mention some promising early and current designs that have not been built.
Don A. Gregory, James C. Kirsch
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A Simplified Coherent Optical Correlator
Applied Optics, 1968The basic theory plus a few nonreal time experimental results of a coherent optical analog correlator consisting of only a ngle transforming lens are given. The two spatial signals to be correlated were written on two side-by-side photographic transparencies (an ultrasonic light modulator may be employed for real time operation).
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, 1974 A survey is given of the most common types of coherent optical correlators, which are classified as spatial plane correlators, frequency plane correlators and special reference correlators. Only the spatial plane correlators are dealt with rather thoroughly.
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Optical Correlation Methods in Epigraphy
1997An overview of the recognition problem and the possible approaches for solution in epigraphy is given. Examples on the averaging of patterns, feature extraction, and the system configuration design are given to demonstrate the main issues.
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Intelligent Optical Correlator
Optical Engineering, 1989By extracting the basic rectangular features of an object from a digitized Fourier transform image, one can calculate the scale factor and rotational angle of a rectangular object and use them to derotate and scale the input image. Thus, a scale- and rotational-invariant optical correlator is achieved. The accuracy of the computed scale and orientation
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Kinoform optics applied to X-ray photon correlation spectroscopy
Journal of Synchrotron Radiation, 2010Alec Sandy +2 more
exaly
Some current views on the origins and prospects of correlation optics
Applied Optics, 2016Ch V Felde, P V Polyanskii, O V Angelsky
exaly