Electronic apparatus and method of processing fingerprint image
AssigneeSamsung Electronics Co., Ltd.
InventorHuijin LEE
Life of this patent
Estimating the term…
Abstract
A method of processing a fingerprint image in an electronic apparatus includes: obtaining an original fingerprint image by sensing a fingerprint of a user; estimating a spatial change trend of original contrast values in the original fingerprint image; generating a reference contrast map based on the estimated spatial change trend; normalizing a contrast distribution of the original fingerprint image based on the reference contrast map, and generating a normalization fingerprint image having a normalized contrast distribution.
Claims20
A method of processing a fingerprint image in an electronic apparatus, the method comprising:
- obtaining an original fingerprint image by sensing a fingerprint of a user;
- determining a contrast distribution of original contrast values of pixels of the original fingerprint image;
- generating a reference contrast map having reference contrast values based on the determined contrast distribution;
- and
- generating a normalization fingerprint image by normalizing the contrast distribution of the original fingerprint image based on the original contrast values and the reference contrast values.
An electronic apparatus for processing a fingerprint image, the electronic apparatus comprising:
- a fingerprint sensor configured to obtain an original fingerprint image by sensing a fingerprint of a user;
- and
- a processor configured to
- determine a contrast distribution of original contrast values of pixels of the original fingerprint image,
- generate a reference contrast map having reference contrast values based on the determined contrast distribution, and
- generate a normalization fingerprint image by normalizing the contrast distribution of the original fingerprint image based on the original contrast values and the reference contrast values.
Dependencies are inferred from the claim text.