Model of 2D optical correlator for fingerprint identification

Abstract

This paper is devoted to the fingerprint identification problems and the experimental models of relevant optical setups. As published last year, some possibility of a fingerprint identification by means of 1D cut correlation has appeared. The first section of this paper deals with an improvement of our previous method based upon a 1D cut correlation. Originally a fingerprint photographic film record was used. Recently a fingerprint is displayed on a 2D hi-res LCD panel SHARP.comparative experimental verification of widely used JTC as a reference 2D correlation method.The second section of this paper is oriented to a

General-purpose acousto-optic connectionist processor

“…18͒ and capability to withstand large optical power densities, 19 respectively. Calomel AO cell fabrication details and experimental data, [12][13][14][15] comparisons between the properties of calomel and various other AO materials, 16 and details of our particular calomel AO cell 20 can be found in the literature. Although a reliable preparation technique 12 has been developed for mercurous chloride single crystals, the material's low hardness and high fragility cause significant difficulties when fabricating an AO unit.…”