TY - JOUR
T1 - Optical method for personal identification based on recognition of three-dimensional objects
AU - Kobayashi, Junjiro
AU - Komatsu, Shinichi
PY - 2004/8
Y1 - 2004/8
N2 - We propose an optical method of personal identification utilizing three-dimensional information about a portable object, for which we choose a seal in the present study. The three-dimensional information about the seal, i.e., its engraved design and engraved depth, is recorded with a charge-coupled device (CCD) camera as a two-dimensional oblique projection. For identification, a target projection is compared with a reference projection on the basis of the joint transform correlation (JTC). In order to enhance the detail of the projections for better discrimination, we adopt the modified JTC in which, instead of employing the power spectra of the target and reference projections, their logarithms are used. The feasibility of the proposed method is examined by computer simulation as well as by optical experimentation, and satisfactory results are obtained.
AB - We propose an optical method of personal identification utilizing three-dimensional information about a portable object, for which we choose a seal in the present study. The three-dimensional information about the seal, i.e., its engraved design and engraved depth, is recorded with a charge-coupled device (CCD) camera as a two-dimensional oblique projection. For identification, a target projection is compared with a reference projection on the basis of the joint transform correlation (JTC). In order to enhance the detail of the projections for better discrimination, we adopt the modified JTC in which, instead of employing the power spectra of the target and reference projections, their logarithms are used. The feasibility of the proposed method is examined by computer simulation as well as by optical experimentation, and satisfactory results are obtained.
KW - Joint transform correlation
KW - Optical security
KW - Personal identification
KW - Seal recognition
KW - Three-dimensional object
UR - http://www.scopus.com/inward/record.url?scp=7544224836&partnerID=8YFLogxK
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U2 - 10.1143/JJAP.43.5897
DO - 10.1143/JJAP.43.5897
M3 - Article
AN - SCOPUS:7544224836
VL - 43
SP - 5897
EP - 5903
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 8 B
ER -