منابع مشابه
Three-dimensional joint transform correlator.
The three-dimensional (3-D) joint transform correlator is demonstrated with realistic targets. Three-dimensional objects observed by multiple cameras are correlated with a 3-D reference object. The number of cameras and their directions of observation are particularly considered.
متن کاملFractional order Fourier transform-based fringe-adjusted joint transform correlator
An extended fractional Fourier transform (FRT) based fringe-adjusted joint transform correlator (JTC) for real-time target recognition applications has been implemented. In real-time situation, the input scene is captured using a chargecoupled device camera. The joint input images are fractional Fourier transformed and the joint power spectrum (JPS) has been recorded. Thus obtained JPS is multi...
متن کاملControlled-intensity detection peaks in a binary joint transform correlator.
In multiobject pattern recognition the height of the correlation peaks should be controlled when the power spectrum of ajoint transform correlator is binarized. In this paper a method to predetermine the value of detection peaks is demonstrated. The technique is based on a frequency-variant threshold in order to remove the intraclass terms and on a suitable factor to normalize the binary joint ...
متن کاملOptical Image Encryption Based on Joint Fresnel Transform Correlator
Optical verification systems can make image hide in high-security phase key through the phase retrieval operation Conventionally, optical verification systems based on the joint transform correlator usually use Fourier transform. In this paper we propose the joint Fresnel transform architecture and use the methods of the projection onto constraint set and nonlinear transform to determine the p...
متن کاملDigital correlation holograms implemented on a joint transform correlator
A system of two separated computer-generated holograms termed digital correlation hologram (DCH) is proposed and demonstrated. In each hologram a different computer-generated complex function is coded. The reconstructed image is obtained as a result of a spatial correlation between the hologram s two parts. The correlation between the two sub-holograms is implemented on a modified joint transfo...
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ژورنال
عنوان ژورنال: Journal of Physical Studies
سال: 2000
ISSN: 1027-4642,2310-0052
DOI: 10.30970/jps.04.282