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Techniques to improve binary joint transform correlator, particularly for fingerprint recognition
Techniques to improve binary joint transform correlator, particularly for fingerprint recognition
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机译:改进二进制联合变换相关器的技术,尤其是用于指纹识别的技术
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摘要
In a binary joint transform correlator, a Fourier plane binarization threshold is provided which alternates between even and odd rows and reduces noise in the output plane and improves discrimination between matched and unmatched prints. Periodically correlating with a known standard input and normalizing the output peak intensity prevents correlator performance drift from degrading fingerprint recognition performance. Experimental system performance is assessed statistically, in terms of the false pass rate seen when operating with a constant false alarm rate. By applying both techniques, a false pass improvement from 6.95% to 0.076% is experimentally demonstrated at a false alarm rate of 0.1 percent.
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