ELECTRONIC DEVICE COMPRISING MINIMUM SENSING AREA AND FINGERPRINT INFORMATION PROCESSING METHOD THEREOF

摘要

According to one embodiment, provided is a method by which an electronic device comprising a minimum fingerprint sensing area processes fingerprint information, comprising the steps of: acquiring a fingerprint image from the fingerprint sensing area; calculating a shade change value, defined by a shade difference value from a neighboring pixel, for each pixel of the fingerprint image; selecting points, as feature point candidates, of which the shade change value is a threshold value or more; applying artificial distortion for noise filtering to an area including the feature point candidates and neighboring pixels thereof; and selecting, as final feature points, candidates of which the shade change value after the artificial distortion is within a threshold range from among the feature point candidates.

主权项

1. A fingerprint information processing method for an electronic device including a minimum fingerprint sensing area, the method comprising:
acquiring a fingerprint image from the fingerprint sensing area; calculating an intensity variation value defined as an intensity difference value with respect to a neighboring pixel for each pixel of the fingerprint image; selecting points, each of which the intensity variation value is a threshold value or more, as feature point candidates; applying artificial distortion to a region including the feature point candidates and neighboring pixels thereof for noise filtering; and, selecting candidates, each of which the intensity variation value after the artificial distortion is within a threshold range, among the feature point candidates as final feature points.