Fingerprint preview quality and segmentation
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.
1. 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.
2. The method of claim 1 , further comprising scoring the received image.
3. The method of claim 1 , wherein the received image comprises segmentation information.
4. The method of claim 1 , wherein the received image includes ridge flow information.
5. The method of claim 1 , further comprising determining and providing one or more of audio and video feedback based on the image quality determination method.
6. 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.
7. The system of claim 6 , further comprising a fingerprint quality module that scores the received image.
8. The system of claim 6 , wherein the received image comprises segmentation information.
9. The system of claim 6 , wherein the received image includes ridge flow information.
10. The system of claim 6 , further comprising a feedback module to provide one or more of audio and video feedback based on the image quality determination method.
11. 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.
12. The media of claim 11 , further comprising scoring the received image.
13. The media of claim 11 , wherein the received image comprises segmentation information.
14. The media of claim 11 , wherein the received image includes ridge flow information.
15. The media of claim 11 , further comprising determining and providing one or more of audio and video feedback based on the image quality determination method.