METHOD OF PRE-PROCESSING BIOMETRIC PARAMETERS BEFORE ENCODING AND DECODING

摘要

PROBLEM TO BE SOLVED: To provide a method of preprocessing biometric parameters acquired from human faces, voices, fingerprints, and irises to use them for user authentication and access control.

SOLUTION: Since the biometric parameters are continuous and vary from one reading to the next, syndrome codes are used to discriminate biometric syndrome vectors. The biometric syndrome vectors can be stored securely while the variability specific to the biometric data is permitted. The stored biometric syndrome vectors are decoded during user authentication using biometric parameters acquired at that time. The syndrome codes can also be used to encrypt and decrypt data. The biometric parameters can be pre-processed to form a binary representation having a set of predetermined statistical properties given under a set of binary logical conditions.

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