We compare the experimental performance of 12 variations
of the binary joint transform correlator (BJTC) when used for fingerprint
identification. Three hardware architectures were used: a single spatial
light modulator (SLM) BJTC, a BJTC using two input SLMs, and a chirpencoded
BJTC using two input SLMs. These correlators were implemented
on the same hardware setup with minor modifications. With each
hardware configuration, four binarization techniques were implemented:
global threshold, Fourier plane windowing, frame subtraction, and frame
subtraction followed by windowing. A set of 10 experiments was used to
characterize the output peak intensity, peak-to-noise ratio, and discrimination
ratio. The same set of experiments was run on each of the 12
correlator variants.
Thomas J. Grycewicz, Bahram Javidi, "Experimental comparison of binary joint transform correlators used for fingerprint identification," Opt. Eng. 35(9) (1 September 1996)