Interactive multiple fingerprint enrollment
AssigneeSecuGen Corporation
InventorDong Won Lee
Life of this patent
Estimating the term…
Abstract
Interactive multiple fingerprint enrollment in the field of fingerprint detection and authentication is disclosed. The enrollment apparatus is configured to perform the following procedures: instruct a user to present a randomly selected set of multiple fingers on a sensing surface of the enrollment apparatus interactively, capture a fingerprint image of the multiple fingers on the sensing surface simultaneously, identify boundaries of the multiple fingers by scanning from edges of the sensing surface of the enrollment apparatus, segment the fingerprint image into a plurality of individual fingerprint images based on the identified boundaries, and store the individual fingerprint images.
Claims16
A method for simultaneous interactive multiple fingerprint enrollment, comprising:
- instructing, by a controller, a user to present a randomly selected set of multiple fingers on a sensing surface of an enrollment apparatus interactively;
- capturing, by an image sensor, a fingerprint image of the multiple fingers on the sensing surface simultaneously;
- identifying, by the controller, boundaries of the multiple fingers by scanning from edges of the sensing surface of the enrollment apparatus, comprising from each edge of the sensing surface of the enrollment apparatus, scanning towards the randomly selected set of multiple fingers to detect a boundary of the fingerprint image, and further comprising:
- traversing the boundary of the fingerprint image;
- repeating the process of:
- moving away from the boundary until a first pixel location that no longer has high contrast with respect to its neighboring pixels;
- moving towards the boundary until a second pixel location that has high contrast with respect to its neighboring pixels;
- marking the first pixel location and the second pixel location as transition pixels;
- and
- updating the boundary using the transition pixels;
- segmenting, by the controller, the fingerprint image into a plurality of individual fingerprint images based on the identified boundaries;
- and
- storing, in a memory, the individual fingerprint images.
An apparatus for simultaneous interactive multiple fingerprint enrollment, comprising:
- a controller configured to instruct a user to present a randomly selected set of multiple fingers on a sensing surface of an enrollment apparatus interactively;
- an image sensor configured to capture a fingerprint image of the multiple fingers on the sensing surface simultaneously;
- the controller is configured to identify boundaries of the multiple fingers by scanning from edges of the sensing surface of the enrollment apparatus, comprising from each edge of the sensing surface of the enrollment apparatus, scan towards the randomly selected set of multiple fingers to detect a boundary of the fingerprint image, and further comprising:
- traverse the boundary of the fingerprint image;
- and
- repeat the process of:
- move away from the boundary until a first pixel location that no longer has high contrast with respect to its neighboring pixels;
- move towards the boundary until a second pixel location that has high contrast with respect to its neighboring pixels;
- mark the first pixel location and the second pixel location as transition pixels;
- and
- update the boundary using the transition pixels;
- the controller is further configured to segment the fingerprint image into a plurality of individual fingerprint images based on the identified boundaries;
- and
- a memory configured to store the individual fingerprint images.
Dependencies are inferred from the claim text.