METHOD AND FINGERPRINT SENSING SYSTEM FOR FORMING A FINGERPRINT REPRESENTATION

摘要

The present invention generally relates to a method for forming a fingerprint using a fingerprint sensing system, and specifically to the possibility of allowing the formation of a fingerprint when only separated portions of the fingerprint is available. The invention also relates to the corresponding fingerprint sensing system and to a computer program product.

主权项

1. A method of forming a fingerprint representation of a fingerprint pattern of a finger captured using a fingerprint sensor, the method comprising the steps of:
acquiring a first partial image of a corresponding first portion of a fingerprint pattern using the fingerprint sensor; extracting a first fingerprint feature from the first partial image; acquiring a second partial image of a corresponding second portion of the fingerprint pattern using the fingerprint sensor, the second partial image being non-overlapping with the first partial image; extracting a second fingerprint feature from the second partial image; determining a first parameter for each of the first and the second fingerprint feature, the first parameter being at least one of a representation of a relative spatial fingerprint position for the respective fingerprint feature and a representation of a relation of the fingerprint feature to the finger; and forming the fingerprint representation by correlating the first parameter for the first fingerprint feature with the first parameter for the second fingerprint feature.