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US 2010/0135539 A1Published application
Personal identification system
AssigneeHitachi, Ltd.
InventorsMiyuki Kono, Shin-ichiro Umemura, Takafumi Miyatake, Kunio Harada, Yoshitoshi Ito, Hironori Ueki
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Abstract
A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.
Claims10
A personal identification system comprising:
- a light source for shining light on a finger of a person to be identified,
- an imaging device for capturing image of the finger with a blood vein pattern in the finger by the light passing through the finger, and
- an imaging processing unit for processing image having been captured to acquire a blood vein emphasized image, and for comparing the blood vein emphasized image acquired with an image having been registered to authenticate the person;
- wherein the imaging processing unit is arranged to authenticate the person by performing calculation of correlation with a monotone increasing calculation in which a calculated output value increases in proportion to degree of matching of two dimensional array elements between the blood vein emphasized image and the image having been registered, and;
- wherein the imaging processing unit is arranged to acquire the blood vein emphasized image with making an average pixel values of outside and inside of the finger substantially equal.
2 more elements
A personal identification system comprising:
- a light source for shining light on a finger of a person to be identified,
- an imaging device for capturing image of the finger with a blood vein pattern in the finger by the light passing through the finger, and
- an imaging processing unit for processing image having been captured to acquire a blood vein emphasized image, and for comparing the blood vein emphasized image acquired with an image having been registered within a database to authenticate the person;
- wherein the imaging processing unit is arranged to acquire the blood vein emphasized image with making an average pixel values of outside and inside of the finger substantially equal.
1 more element
A personal identification system comprising:
- a light source for shining light on a finger of a person to be identified,
- an imaging device for capturing image of the finger by the light passing through the finger, and
- an imaging processing unit for authenticating the person with comparing image having been captured with an image registered;
- wherein the imaging processing unit is arranged to authenticate the person by performing calculation of correlation with a monotone increasing calculation in which a calculated output value increases in proportion to degree of matching of two dimensional array elements between the image having been imaged and the image having been registered.
1 more element
Dependencies are inferred from the claim text.