| 摘要 |
THE INVENTION DISCLOSES A PROCESS OF RECODING BIOMETRIC FEATURES IN RECORDABLE MEDIUM COMPRISING SEVERAL STEPS. RAW BIOMETRICS FEATURE SUCH AS FINGER PRINTS, PALM PRINTS, IRIS IMAGE, RETINA IMAGE AND OTHER BIOMETRICS FEATURE OR A COMBINATION THEREOF ARE EXTRACTED. THE RAW BIOMETRICS FEATURE IS SEGMENTED INTO AT LEAST TWO SEGMENT UNITS. ANCHOR FEATURES AND AT LEAST TWO OTHER SIGNIFICANT FEATURES IN EACH SEGMENT ARE IDENTIFIED. THE ANCHOR FEATURE CONSISTS OF CENTRE POINT IN FINGER PRINTS OR PALM PRINTS, OPTIC DISC IN RETINA IMAGE OR LENS SECTION IN IRIS IMAGE. THE SIGNIFICANT FEATURES CONSIST OF RIDGE JOIN POINTS, RIDGE LINE ENDINGS FOR FINGER PRINTS OR PALM PRINTS AND MACULA AND VESSEL DENSITY IN RETINA, AND LENS AND IRIS PORTION IN IRIS IMAGE. THE RELATIVITY IN POSITION OF EACH SIGNIFICANT FEATURE IN RELATION TO THE ANCHOR FEATURE IS COMPUTED. THE RELATIVITY INCLUDES ONE OR MORE OF THE FOLLOWING; DISTANCE, DIRECTION OR SEGMENTS UNITS. THE MINIMUM AND MAXIMUM VALUE OF THE RELATIVITY OF EACH FEATURE IS COMPUTED. THE VALUES OBTAINED IN STEPS (IV) AND (V) OR IN COMBINATION AS FEATURE ARE CONCATENATED. FEATURE OBTAINED IN STEP (VI) ARE STORED.
|
