high speed finger-print optical scanning method
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electronics seminars
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#1
20-11-2009, 03:52 PM


optical scanning technique of dactylogram (fingerprint) developed by using plural LED's with different wavelength as emitting elements and a color CCD or CMOS area image sensor as receiving element. if the above LED's have wave lengths corresponding to those peak sensing wavelengths of the R/G/B outputs of that color area image sensor, Owing to the R/G/B filters built in that color area image sensor ,and if the above mentioned LED's are installed to emit light on the surface of finger from different directions, then it will be effective to get a 3D picture by using a single color area image sensor. the time needed to obtain a 3D picture is only that for single exposure.the sharpness of border of the ridges of a fingerprint in the picture is greatly enhanced. This simplifies the data transmission. Besides, by a simple signal processing of those output waveforms of the color area image sensor, the security against counterfeiting in fingerprint identification can be easily ensured.
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purushotham_browny
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#2
22-11-2009, 11:54 AM

want full report of the high speed fingerprinting
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electronics seminars
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Posts: 694
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#3
22-11-2009, 03:52 PM

its ieee article
see
ieeexplore.ieeexpl/freeabs_all.jsp?arnumber=806525


or make new one
from given material
iseingemcis/EMCIS2008/Proceedings/Refereed%20Papers/Contributions/C%2028/Badii-Thiemert%20Fingerprinting%20Paper%20Camera%20Ready%20other%20authors-OKOK.pdf
bio-keyfingerprintbiometrics/Docs/High%20Speed%20Fingerprint%20Identification%20for%20Public%20Safety-final-8-29-05.pdf
sciencelinks.jp/j-east/article/200102/000020010200A0619577.php


i hope its helpful..
if you want more please reply again
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