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Title:
IMAGE SHARPENING
Document Type and Number:
WIPO Patent Application WO/2022/146100
Kind Code:
A1
Abstract:
Various image sharpening techniques are disclosed. For example, a method for image sharpening includes obtaining, using at least one sensor of an electronic device, an image that includes visual content. The method also includes generating an edge map that indicates edges of the visual content within the image. The method further includes applying a high-pass signal and an adaptive gain based on the edge map to sharpen the image. The method also includes generating a bright halo mask and a dark halo mask based on the edge map, where the bright halo mask indicates an upper sharpening limit and the dark halo mask indicates a lower sharpening limit. In addition, the method includes modifying a level of sharpening at one or more of the edges within the sharpened image to provide halo artifact reduction based on the bright halo mask and the dark halo mask.

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Inventors:
TONG ZHEN (US)
XU YIBO (US)
GLOTZBACH JOHN W (US)
SHEIKH HAMID R (US)
ZHEN RUIWEN (US)
CHOI BAEKDU (US)
Application Number:
PCT/KR2021/020345
Publication Date:
July 07, 2022
Filing Date:
December 31, 2021
Export Citation:
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Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
G06T5/00; G06T5/20; G06T5/50; G06T7/13
Domestic Patent References:
WO2020061856A12020-04-02
Foreign References:
US20200265567A12020-08-20
EP2975850A12016-01-20
US10453185B22019-10-22
US9883125B22018-01-30
EP3471393A12019-04-17
US20080266413A12008-10-30
US20200265567A12020-08-20
EP2975850A12016-01-20
Other References:
YUQIAN ZHOU; DAVID REN; NEIL EMERTON; SEHOON LIM; TIMOTHY LARGE: "Image Restoration for Under-Display Camera", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 10 March 2020 (2020-03-10), 201 Olin Library Cornell University Ithaca, NY 14853 , XP081618592
See also references of EP 4172929A4
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
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