Fingerprint preview quality and segmentation
AssigneeAware, Inc.
InventorsJames M. Maurer, L. Scott Hills
Life of this patent
Estimating the term…
Abstract
A ridge flow based fingerprint image quality determination can be achieved independent of image resolution, can be processed in real-time and includes segmentation, such as fingertip segmentation, therefore providing image quality assessment for individual fingertips within a four finger flat, dual thumb, or whole hand image. A fingerprint quality module receives from one or more scan devices ridge-flow—containing imagery which can then be assessed for one or more of quality, handedness, historical information analysis and the assignment of bounding boxes.
Claims15
An image quality determination method comprising:
- identifying, by a ridge flow module in communication with a processor and memory, ridge flow detections in a received biometric image, the received biometric image containing biometric image information and, for each identified ridge flow detection:
- determining an average contrast;
- determining, by the processor and the memory, a peak Fourier coefficient;
- and
- determining a peak angle agreement between one ridge flow detection and neighboring ridge flow detections.
An image quality determination system comprising:
- a ridge flow module in communication with a processor and memory to identify ridge flow detections in a received biometric image, the received biometric image containing biometric image information and, for each identified detection the processor and memory:
- determining an average contrast;
- determining a peak Fourier coefficient;
- and
- determining a peak angle agreement between a ridge flow detection and neighboring ridge flow detections.
A non-transitory computer readable information storage media having stored thereon instructions that when executed by one or more processors and memory cause a method for image quality determination to be performed comprising:
- identifying ridge flow detections in a received biometric image, the received biometric image containing biometric image information and, for each identified ridge flow detection:
- determining an average contrast;
- determining, by the processor and the memory, a peak Fourier coefficient;
- and
- determining a peak angle agreement between one ridge flow detection and neighboring ridge flow detections.
Dependencies are inferred from the claim text.