SECURE VISUAL FEEDBACK FOR FINGERPRINT SENSING

摘要

Systems and methods for providing visual feedback to a user during fingerprint acquisition. An abstract image or feedback image including a visual representation of the shape of the currently acquired part of the finger is displayed, which provides implicit feedback to the user as to what portion of the fingerprint may be missing. The feedback image also includes a visualization representing a quality of the image, which implicitly alerts the user as to potential problems with the fingerprint presented and imaged. The implicit feedback encourages the user, without explicit prompts, as to how to move the finger to help improve fingerprint coverage or to adjust the quality of the fingerprint presented.

主权项

1. An electronic device comprising:
a fingerprint sensor; a display; and a processing system communicably coupled with the fingerprint sensor and the display, the processing system configured to:
a) acquire an image of a fingerprint from the fingerprint sensor;b) segment the image of the fingerprint into a segmented image having a fingerprint pattern region and a non-fingerprint pattern region;c) generate a feedback image that includes a visualization of an imaging area of the fingerprint sensor and a visualization of at least the fingerprint pattern region of the segmented image, the visualization of the fingerprint pattern region positioned within the visualization of the imaging area at a location that corresponds to a position of the fingerprint relative to the imaging area of the fingerprint sensor; andd) display the feedback image on the display.