公开(公告)号：US11615510B2

公开(公告)日：2023-03-28

申请号：US17139885

申请日：2020-12-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Baekdu Choi ,  Ruiwen Zhen ,  John W. Glotzbach ,  Hamid R. Sheikh

IPC: G06T3/40 ,  G06T5/00 ,  G06T5/50

Abstract: An electronic device includes at least one imaging sensor and at least one processor coupled to the at least one imaging sensor. The at least one imaging sensor is configured to capture a burst of image frames. The at least one processor is configured to generate a low-resolution image from the burst of image frames. The at least one processor is also configured to estimate a blur kernel based on the burst of image frames. The at least one processor is further configured to perform deconvolution on the low-resolution image using the blur kernel to generate a deconvolved image. In addition, the at least one processor is configured to generate a high-resolution image using super resolution (SR) on the deconvolved image.

公开(公告)号：US11727540B2

公开(公告)日：2023-08-15

申请号：US17139880

申请日：2020-12-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Zhen Tong ,  Yibo Xu ,  John W. Glotzbach ,  Hamid R. Sheikh ,  Ruiwen Zhen ,  Baekdu Choi

IPC: G06T5/00 ,  G06T7/13 ,  G06T5/50 ,  G06T5/20

CPC classification number: G06T5/003 ,  G06T5/002 ,  G06T5/009 ,  G06T5/20 ,  G06T5/50 ,  G06T7/13 ,  G06T2207/20192 ,  G06T2207/20208 ,  G06T2207/20221

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.

公开(公告)号：US20220207658A1

公开(公告)日：2022-06-30

申请号：US17139880

申请日：2020-12-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Zhen Tong ,  Yibo Xu ,  John W. Glotzbach ,  Hamid R. Sheikh ,  Ruiwen Zhen ,  Baekdu Choi

IPC: G06T5/00 ,  G06T7/13 ,  G06T5/50 ,  G06T5/20

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.

公开(公告)号：US20220122223A1

公开(公告)日：2022-04-21

申请号：US17139885

申请日：2020-12-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Baekdu Choi ,  Ruiwen Zhen ,  John W. Glotzbach ,  Hamid R. Sheikh

IPC: G06T3/40 ,  G06T5/00 ,  G06T5/50

Abstract: An electronic device includes at least one imaging sensor and at least one processor coupled to the at least one imaging sensor. The at least one imaging sensor is configured to capture a burst of image frames. The at least one processor is configured to generate a low-resolution image from the burst of image frames. The at least one processor is also configured to estimate a blur kernel based on the burst of image frames. The at least one processor is further configured to perform deconvolution on the low-resolution image using the blur kernel to generate a deconvolved image. In addition, the at least one processor is configured to generate a high-resolution image using super resolution (SR) on the deconvolved image.