Image correlation at low light levels.
Low-light-level input images are cross correlated with a classical intensity reference image that is stored in computer memory. Experimental measurements of the correlation signal, obtained using a two-dimensional, photon-counting detector and position-computing electronics, are reported. The experimental results are in good agreement with theoretical predictions.
Morris
G M
GM
The Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Wernick
M N
MN
Isberg
T A
TA