Effects of fringe binarization of multiobject joint transform correlation

Abstract

A study of the effect of fringe binarization on the joint transform correlator has shown that the interference fringes for multiple targets could produce false alarms and misses.

Controlled-intensity detection peaks in a binary joint transform correlator

“…As a consequence, advice that the detection threshold of a control that registers correlation can be programmed. Let WR(U, v) be the weight function of a BJPS; i.e., (8) where I is the WR-normalized JPS.…”

Effects of thresholding level variation in fringe binarization of multiobject joint transform correlation

“…As shown in Fig. 2, the output correlations provide false alarms in this situation because there are four correlation peaks, three correct (A, B, and C) and one incorrect (F) in 4 When we expand the correlation field, we also find smaller false correlation peaks (f) in x = ±8h and x = ± 10h.…”

“…3 In a later study the effect of binarization of the power spectrum (fringe binarization) in a joint transform correlator for multiple targets was discussed by means of a computer simulation of a concrete example. 4 The conclusions are that fringe binarization may not be usefully applied for multiple target recognition because it could produce false alarms and misses, both with noise and without noise. It can be applied only to a noise-free singletarget correlation.…”

Effects of band-pass sampling on joint transform correlation

“…[1][2][3][4][5][6][7][8] JTC systems are used in shift-invariant pattern recognition and can be used to update the reference in real time. An attractive feature of JTC systems is that they do not require a priori filter fabrication and the need for precise positioning of the filter is avoided.…”