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公开(公告)号：US11064133B2
公开(公告)日：2021-07-13
申请号：US16544008
申请日：2019-08-19
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ruiwen Zhen , John W. Glotzbach , Hamid R. Sheikh , Ibrahim Pekkucuksen , Zhen Tong , Long N. Le
Abstract: A method includes obtaining multiple image frames of a scene using at least one sensor of an electronic device. The multiple image frames include a first image frame and a second image frame having a longer exposure than the first image frame. The method also includes generating a label map that identifies pixels in the multiple image frames that are to be used in an image. The method further includes generating the image of the scene using the pixels extracted from the image frames based on the label map. The label map may include multiple labels, and each label may be associated with at least one corresponding pixel and may include a discrete value that identifies one of the multiple image frames from which the at least one corresponding pixel is extracted.
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公开(公告)号：US20230035482A1
公开(公告)日：2023-02-02
申请号：US17649095
申请日：2022-01-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： John W. Glotzbach , Long N. Le , Zhen Tong , Hamid R. Sheikh , Yibo Xu
Abstract: A method includes obtaining multiple input image frames and determining how to warp at least one of the input image frames. The method also includes performing an intraband demosaic-warp operation to reconstruct image data in different color channels of the input image frames and warp the at least one input image frame to produce RGB input image frames. The method further includes blending the RGB input image frames to produce a blended RGB image frame, performing an interband denoising operation to produce a denoised RGB image frame, and performing an interband sharpening operation to produce a sharpened RGB image frame. In addition, the method includes performing an interband demosaic operation to substantially equalize high-frequency content in different color channels of the sharpened RGB image frame to produce an equalized sharpened RGB image frame and generating a final image of the scene based on the equalized sharpened RGB image frame.
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公开(公告)号：US20230034109A1
公开(公告)日：2023-02-02
申请号：US17586435
申请日：2022-01-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Long N. Le , Yibo Xu , John W. Glotzbach , Zhen Tong , Hamid R. Sheikh
Abstract: A method includes obtaining a blended red-green-blue (RGB) image frame of a scene. The method also includes performing, using at least one processing device of an electronic device, an interband denoising operation to remove at least one of noise and one or more artifacts from the blended RGB image frame in order to produce a denoised RGB image frame. Performing the interband denoising operation includes performing filtering of red, green, and blue color channels of the blended RGB image frame to remove at least one of the noise and the one or more artifacts from the blended RGB image frame. The filtering of the red and blue color channels of the blended RGB image frame is based on image data of at least one of the green color channel and a white color channel of the blended RGB image frame.
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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
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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公开(公告)号：US11200653B2
公开(公告)日：2021-12-14
申请号：US16707652
申请日：2019-12-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Zhen Tong , John W. Glotzbach , Ruiwen Zhen , Hamid R. Sheikh
Abstract: A method includes obtaining, using at least one sensor of an electronic device, multiple image frames of a scene. The multiple image frames include a first image frame and a second image frame captured using different exposures. The method also includes excluding, using at least one processor of the electronic device, pixels in the first and second image frames based on a coarse motion map. The method further includes generating, using the at least one processor, multiple local histogram match maps based on different portions of the first and second image frames. In addition, the method includes generating, using the at least one processor, an image of the scene using the local histogram match maps.
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Patent Agency Ranking
公开(公告)号：US12254601B2
公开(公告)日：2025-03-18
申请号：US17586435
申请日：2022-01-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Long N. Le , Yibo Xu , John W. Glotzbach , Zhen Tong , Hamid R. Sheikh
IPC: G06T5/70 , G06T5/10 , H04N25/683
Abstract: A method includes obtaining a blended red-green-blue (RGB) image frame of a scene. The method also includes performing, using at least one processing device of an electronic device, an interband denoising operation to remove at least one of noise and one or more artifacts from the blended RGB image frame in order to produce a denoised RGB image frame. Performing the interband denoising operation includes performing filtering of red, green, and blue color channels of the blended RGB image frame to remove at least one of the noise and the one or more artifacts from the blended RGB image frame. The filtering of the red and blue color channels of the blended RGB image frame is based on image data of at least one of the green color channel and a white color channel of the blended RGB image frame.
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公开(公告)号：US12148124B2
公开(公告)日：2024-11-19
申请号：US17649095
申请日：2022-01-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： John W. Glotzbach , Long N. Le , Zhen Tong , Hamid R. Sheikh , Yibo Xu
Abstract: A method includes obtaining multiple input image frames and determining how to warp at least one of the input image frames. The method also includes performing an intraband demosaic-warp operation to reconstruct image data in different color channels of the input image frames and warp the at least one input image frame to produce RGB input image frames. The method further includes blending the RGB input image frames to produce a blended RGB image frame, performing an interband denoising operation to produce a denoised RGB image frame, and performing an interband sharpening operation to produce a sharpened RGB image frame. In addition, the method includes performing an interband demosaic operation to substantially equalize high-frequency content in different color channels of the sharpened RGB image frame to produce an equalized sharpened RGB image frame and generating a final image of the scene based on the equalized sharpened RGB image frame.
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8.发明公开公开(公告)号：US20230237623A1
公开(公告)日：2023-07-27
申请号：US17587521
申请日：2022-01-28
Applicant: Samsung Electronics Co., Ltd.
Inventor： John Glotzbach , Zhen Tong , Hamid R. Sheikh
CPC classification number: G06T5/002 , G06T5/50 , G06T2207/20192
Abstract: A system and method are provided for noise reduction improvement for blending blurred frames in a multi-frame system. The method includes retrieving a number of frames of an image. The method also includes identifying one or more edges within the frames and comparing an edge strength of a reference frame and an edge strength of a non-reference frame. The method further includes determining a weight reduction factor based on a result of the comparison and applying the weight reduction factor to a blending of multiple frames of the number of frames of the image. In addition, the method includes displaying the blended frames.
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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
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.
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公开(公告)号：US11095829B2
公开(公告)日：2021-08-17
申请号：US16544008
申请日：2019-08-19
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ruiwen Zhen , John W. Glotzbach , Hamid R. Sheikh , Ibrahim Pekkucuksen , Zhen Tong , Long N. Le
Abstract: A method includes obtaining multiple image frames of a scene using at least one sensor of an electronic device. The multiple image frames include a first image frame and a second image frame having a longer exposure than the first image frame. The method also includes generating a label map that identifies pixels in the multiple image frames that are to be used in an image. The method further includes generating the image of the scene using the pixels extracted from the image frames based on the label map. The label map may include multiple labels, and each label may be associated with at least one corresponding pixel and may include a discrete value that identifies one of the multiple image frames from which the at least one corresponding pixel is extracted.
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