公开(公告)号：KR1020030049643A

公开(公告)日：2003-06-25

申请号：KR1020010079921

申请日：2001-12-17

Applicant: 한국전자통신연구원

Inventor： 문대성 ,  길연희 ,  반성범 ,  정용화

IPC: G06K9/00

Abstract: PURPOSE: A fingerprint recognition method for a personal device operated with lower power is provided to make a host system perform a floating point operation and a multiplication operation for a comparison of minutiae data between registered and input fingerprint or a fingerprint compensation, and to make a personal device, e.g., a smart card or a USB security token, repeat a fixed point operation. CONSTITUTION: The method comprises several steps. A host receives the image data of fingerprint registered by a user, generates minutiae data structure for the registered fingerprint(S30, S32, S34), and registers the minutiae data structure for the registered fingerprint at a personal device(S36). If a user transmits fingerprint image data to the host for a user authentication request, the host receives the fingerprint image data, generates the minutiae data structure, and transmits the minutiae data structure to the personal device(S38, S40, S42). The personal device extracts the same minutiae data between the registered and the newly transmitted minutiae, calculates parameters on a rotation or transition between the two image data by referring to the extracted minutiae data, encodes the calculated parameters, and transmits the encoded parameters to the host(S44). The host compensates for the minutiae data on the newly input fingerprint image by using the transmitted parameters(S46). The host matches the minutiae of the registered fingerprint with that of the compensated fingerprint, and authenticates the user or not according to the matching result(S48).

Abstract translation: 目的：提供以较低功率运行的个人设备的指纹识别方法，使主机系统执行浮点运算和乘法运算，以便比较注册和输入指纹或指纹补偿之间的细节数据，并使 个人设备，例如智能卡或USB安全令牌，重复定点操作。 构成：该方法包括几个步骤。 主机接收用户注册的指纹的图像数据，生成登记指纹的细节数据结构（S30，S32，S34），并将注册指纹的细节数据结构登记在个人装置（S36）。 如果用户向主机发送用于用户认证请求的指纹图像数据，则主机接收指纹图像数据，生成细节数据结构，并将细节数据结构发送到个人设备（S38，S40，S42）。 个人设备在注册和新发送的细节之间提取相同的细节数据，通过参考提取的细节数据来计算两个图像数据之间的旋转或转换的参数，对所计算的参数进行编码，并将编码的参数发送到主机 （S44）。 主机通过使用发送的参数来补偿新输入的指纹图像上的细节数据（S46）。 主机将注册指纹的细节与补偿指纹的细节相匹配，并根据匹配结果对用户进行认证（S48）。