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    • 4. 发明公开
    • 지정맥 특징점 추출 방법 및 장치
    • 提取手指特征点的方法和装置
    • KR1020110021039A
    • 2011-03-04
    • KR1020090078595
    • 2009-08-25
    • 서울대학교산학협력단
    • 김태정김희찬이승래최준환송원석
    • G06K9/00
    • G06K9/00885G06F17/16G06K2009/00932
    • PURPOSE: A method and an apparatus of extracting a finger vein feature point are provided to use the bifurcation of a finger vein as a finger vein feature point by calculating radialness. CONSTITUTION: An apparatus for extracting a finger vein feature point acquires a finger image from a finger passing through an infrared ray zone(S100). The apparatus removes a background from the acquired finger image(S110), and calculates the radialness in each pixel of the acquired finger vein image(S140). The apparatus extracts the corresponding pixel as the bifurcation of the finger vein feature point(S150). In the corresponding pixel, the calculated radialness is a local maximum value.
    • 目的:提供一种提取手指静脉特征点的方法和装置,通过计算径向度将手指静脉的分叉用作手指静脉特征点。 构成:用于提取手指静脉特征点的装置从通过红外线区域的手指获取手指图像(S100)。 该装置从获取的手指图像中去除背景(S110),并计算获取的手指静脉图像的每个像素的径向度(S140)。 该装置提取相应的像素作为手指静脉特征点的分叉(S150)。 在相应的像素中,计算的径向度是局部最大值。
    • 10. 发明公开
    • 손가락 이미지 정합 방법, 이를 이용한 사용자 인증 방법 및 그 장치
    • 指纹图像注册方法,使用该方法的用户认证方法和用户认证装置
    • KR1020100125662A
    • 2010-12-01
    • KR1020090044483
    • 2009-05-21
    • 서울대학교산학협력단
    • 노승우김희찬공현중김지만박상윤이승래
    • G06K9/00G06T7/40
    • G06K9/00885G06K9/685G06K2009/00932G06T7/33
    • PURPOSE: A fingerprint image matching method, a method for authenticating a user using the same, and a method for the same are provided to perform a first image matching with a common template, thereby considerably reducing the time consuming in authentication. CONSTITUTION: A database(20) stores the vein image of a finger of a user. An image obtainer(10) obtains the upper skin and vein image of a finger. A conversion data calculator(40) analyzes the skin image and calculates a rotation angle and perpendicular/horizontal shift value relatively about a common template(30). According to the rotation angle, and perpendicular/horizontal shift value, the location conversion unit(50) converts the vein image. An authentication performing unit(60) comparing the data of a vein image and a data of a database and performs the user authentication.
    • 目的:提供一种指纹图像匹配方法,一种用于认证使用该指纹图像的用户的方法及其方法,用于执行与公共模板匹配的第一图像,从而大大减少了认证时间。 构成:数据库(20)存储用户手指的静脉图像。 图像获取器(10)获得手指的上皮肤和静脉图像。 转换数据计算器(40)分析皮肤图像并相对于公共模板(30)计算旋转角度和垂直/水平移位值。 根据旋转角度和垂直/水平位移值,位置转换单元(50)转换静脉图像。 认证执行单元(60)比较静脉图像的数据和数据库的数据,并执行用户认证。