Image analysis – Applications – Personnel identification
Reexamination Certificate
2006-12-28
2010-11-30
Desire, Gergory M (Department: 2624)
Image analysis
Applications
Personnel identification
C600S504000, C600S587000
Reexamination Certificate
active
07844083
ABSTRACT:
The present invention provides a method for acquiring personal identification data by extracting a ridge-and-recess pattern corresponding to a fingerprint or a knuckle joint and lines on a palm by utilizing characteristics by which subcutaneous bloodstream distribution is spatially modulated by the ridge-and-recess pattern on the surface when measuring a subcutaneous bloodstream distribution based on a bloodstream measuring technology utilizing laser scattering, and by acquiring the same as personal identification data based on living body information, and the same method for acquiring personal identification data includes the steps of: irradiating a laser beam onto at least a part of a fingertip surface or a palm; imaging reflection light from subcutaneous blood vessel layers at an irradiation spot to which a laser beam is irradiated by receiving the same on an image sensor as laser speckles; calculating a change ratio of a light-receiving amount at respective pixels of the laser speckles; preparing a two-dimensional bloodstream map of the irradiation spot based on the numerical values obtained in the step of calculating a change ratio of a light-receiving amount; and storing a ridge-and-recess pattern of the irradiation spot appearing in the two-dimensional bloodstream map as personal identification data.
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Fujii Hitoshi
Konishi Naoki
Desire Gergory M
Kyushu Institute of Technology
Sughrue & Mion, PLLC
Syscom Japan, Inc.
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