Fingerprint preview quality and segmentation

摘要

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.

主权项

1. An image quality determination method for an input image of any resolution comprising:
determining, using a processor and memory, ridge flow for a received image, wherein a grid spacing is determined based on a resolution of the input image; establishing a ridge flow map; identifying one or more ridge flow detections; and determining a quality of the image at least based on the identified ridge flow detections.