Patent ID: 7003141

Claim:
A method of identification of a fingermark, comprising obtaining for a fingermark a fingermark image; storing reference fingermarks in a databank; comparing the obtained fingermark image with the reference fingermarks for identification; before the identification determining for each reference fingermark in comparison with the obtained fingermark image a similarity degree; sorting the reference fingermarks in the databank in accordance with the similarity degree; and performing the identification of the fingermark beginning with the reference fingermark which leads to a greatest similarity degree; and placing square areas around a reference point of the obtained fingermark; multiplying the area with window function; transforming the area by means of a first integral transform in a space frequency region; determining features in the areas of the reference point; evaluating for the features the space frequencies in accordance with amount and direction; and determining by the features of the obtained fingermark and the reference fingermark correspondingly the similarity degree for the corresponding reference fingermark.