Title:
個人認証装置、及び血管画像撮影装置
Document Type and Number:
Japanese Patent JP5789691
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To achieve highly accurate personal authentication, regarding personal authentication under environment where non-contact property is required, while using an unclear and positionally deviated finger vein pattern image.SOLUTION: A personal authentication device is provided with: means for acquiring a finger vein pattern image in a non-contact manner; means for performing rotation correction by using an outline of a finger as a method of taking out a vein pattern included in an acquired image; means for normalizing a position of the finger image by using a fingertip as a reference; means for statistically acquiring the entire vein pattern by repeating tracking portions of a low luminance value from an arbitrary position of the image by an arbitrary length; matching means for comparing only portions where a strong feature is expressed in the blood vessel pattern; and means for dividing the image into small areas, performing matching independently for each small area, and evaluating a positional deviation amount when the small areas are matched to each other.
Inventors:
Naoto Miura
Akira Nagasaka
Takafumi Miyatake
Akira Nagasaka
Takafumi Miyatake
Application Number:
JP2014067842A
Publication Date:
October 07, 2015
Filing Date:
March 28, 2014
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G06T7/00; A61B5/117; G06T1/00
Domestic Patent References:
| JP11203452A | ||||
| JP11000323A | ||||
| JP11045329A | ||||
| JP7021373A | ||||
| JP2000189391A |
Attorney, Agent or Firm:
Polaire Patent Business Corporation