METHOD OF REGISTERING ORIGINAL INFORMATION FOR PERSONAL IDENTITY AUTHENTICATION AND PERSONAL IDENTITY AUTHENTICATION DEVICE

摘要

ON REGISTRATION OF A FINGERPRINT IMAGE, A FINGERPRINT IS TAKEN AS THE FINGERPRINT IMAGE IN NUMBER OF N BY A FINGERPRINT IMAGE INPUT SECTION TO PRODUCE FIRST THROUGH N-TH FINGERPRINT IMAGES, WHERE N REPRESENTS A POSITIVE INTEGER WHICH IS NOT LESS THAN THREE. A CPU (120) EXTRACTS (132) A FEATURE POINT FROM EACH OF THE FIRST THROUGH THE N-TH FINGERPRINT IMAGES TO PRODUCE FIRST THROUGH N-TH FEATURE POINT DATA. THE CPU COMPARES AN N-TH FEATURE DATA WITH EACH OF REMAINING FEATURE DATA TO PRODUCE LEVELS OF SIMILARITIES AS COINCIDENCE DEGREE IN EACH OF THE FIRST THROUGH THE N-TH FEATURE POINT DATA, WHERE N IS VARIABLE BETWEEN 1 AND N, BOTH OF INCLUSIVE. THE CPU SELECTS (138) A MAXIMUM ONE OF THE FIRST THROUGH THE N-TH SUM DATA TO REGISTER, AS A REFERENCE FEATURE POINT DATA THEREIN, ONE OF THE FIRST THROUGH THE N-TH FEATURE DATA THAT HAS THE MAXIMUM SUM DATA.(FIGURE 4)