Three-dimensional joint transform correlator
نویسندگان
چکیده
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 کاملColor image recognition by use of a joint transform correlator of three liquid-crystal televisions.
We present a joint transform correlator for color image recognition by using three liquid-crystal spatial light modulators. A method for simultaneously obtaining the correlation peaks of red, green, and blue is proposed and experimentally demonstrated.
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 کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Optics
سال: 1998
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.37.007538