Title :
Fingerprint identification using the directions field
Author :
Soifer, V.A. ; Kotlyar, V.V. ; Khonina, S.N. ; Skidanov, R.V.
Author_Institution :
Image Processing Syst. Inst., Acad. of Sci., Samara, Russia
Abstract :
Optical-digital systems dedicated to the identification of fingerprints using the spatial spectrum and the directions field are discussed. For constructing the directions field, the proposed optical configuration uses a coherent correlator with a spatial filter consisting of sectional diffraction gratings. It is shown that the analysis based on the directions field is favoured. It is also shown that in analysing fingerprints using the Fourier-spectrum, it is only the information on the angular spectrum distribution that appears to be essential, whereas the information related to the radial spectrum distribution is abundant
Keywords :
Fourier transform optics; diffraction gratings; fingerprint identification; optical correlation; spatial filters; Fourier-spectrum; angular spectrum distribution; coherent correlator; directions field; fingerprint identification; optical-digital systems; radial spectrum distribution; sectional diffraction gratings; spatial filter; spatial spectrum; Correlators; Fingerprint recognition; Fingers; Frequency; Glass; Image processing; Optical diffraction; Optical filters; Optical recording; Spatial filters;
Conference_Titel :
Pattern Recognition, 1996., Proceedings of the 13th International Conference on
Conference_Location :
Vienna
Print_ISBN :
0-8186-7282-X
DOI :
10.1109/ICPR.1996.547014
