公开(公告)号：US20220067338A1

公开(公告)日：2022-03-03

申请号：US17501570

申请日：2021-10-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Huijin LEE

IPC: G06K9/00

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.

公开(公告)号：US20210350102A1

公开(公告)日：2021-11-11

申请号：US17383111

申请日：2021-07-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Huijin LEE ,  Dongkyun KIM ,  Jingu HEO

IPC: G06K9/00 ,  G06K9/20

Abstract: Provided is a method of processing data corresponding to a fingerprint image including obtaining first image data corresponding to a group including a plurality of pixels, and dividing the first image data into second image data corresponding to each of the plurality of pixels based on a plurality of weights corresponding to the plurality of pixels, respectively.

公开(公告)号：US20210064850A1

公开(公告)日：2021-03-04

申请号：US16830667

申请日：2020-03-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Huijin LEE

IPC: G06K9/00

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.