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公开(公告)号：US20240185431A1
公开(公告)日：2024-06-06
申请号：US18073376
申请日：2022-12-01
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yufang Sun , Akira Osamoto , John Seokjun Lee , Hamid R. Sheikh
CPC classification number: G06T7/194 , G06T3/0093 , G06T7/174 , G06T7/337 , G06T2207/20084 , G06T2207/20221
Abstract: A method includes obtaining a reference frame from among multiple image frames of a scene. The method also includes generating a segmentation mask using the reference frame, where the segmentation mask contains information for separation of foreground and background in the scene. The method further includes applying the segmentation mask to each of the multiple image frames to generate foreground image frames and background image frames. The method also includes performing multi-frame registration on each of the foreground image frames to generate registered foreground image frames. The method further includes performing multi-frame registration on each of the background image frames to generate registered background image frames. In addition, the method includes combining the registered foreground image frames and the registered background image frames to generate a combined registered multi-frame image of the scene.
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72.发明公开公开(公告)号：US20240089606A1
公开(公告)日：2024-03-14
申请号：US18474783
申请日：2023-09-26
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ibrahim Pekkucuksen , Hamid R. Sheikh
IPC: H04N23/72 , H04N23/741
CPC classification number: H04N23/72 , H04N23/741
Abstract: A method includes obtaining, using at least one processing device of an electronic device, multiple image frames having different exposure levels. The method also includes determining whether a moving saturated region is present in at least some of the image frames. The method further includes selecting one of the image frames as a reference frame, where the selected image frame depends on whether the moving saturated region is present in at least some of the image frames. The selected image frame may have a first exposure level when the moving saturated region is present in at least some of the image frames, and the selected image frame may have a second exposure level longer than the first exposure level when the moving saturated region is not present in the image frames.
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73.发明授权公开(公告)号：US11889197B1
公开(公告)日：2024-01-30
申请号：US18056566
申请日：2022-11-17
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ibrahim Pekkucuksen , Hamid R. Sheikh
IPC: H04N23/741 , H04N23/72
CPC classification number: H04N23/72 , H04N23/741
Abstract: A method includes obtaining multiple image frames captured during a multi-frame capture operation. The method also includes determining that two or more of the multiple image frames are available for selection as a reference frame, where the two or more image frames are associated with at least two different exposure levels. The method further includes determining whether a moving saturated region is present in the two or more image frames. The method also includes, in response to determining that the moving saturated region is present, selecting an image frame from among the two or more image frames having a first exposure level. In addition, the method includes, in response to determining that the moving saturated region is not present, selecting an image frame from among the two or more image frames having a second exposure level, where the second exposure level is longer than the first exposure level.
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74.发明公开公开(公告)号：US20230362496A1
公开(公告)日：2023-11-09
申请号：US18354394
申请日：2023-07-18
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibo Xu , Hamid R. Sheikh
CPC classification number: H04N23/80 , H04N23/76 , H04N23/84 , G06F1/1686
Abstract: A method includes obtaining an image, where the image includes one or more frames. The method also includes performing multi-frame processing, image signal processing, and image processing on the image to produce a processed image. The method further includes applying a chroma suppression to the processed image. The chroma suppression is configured to reduce brightness and color saturation in one or more select areas within the processed image.
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公开(公告)号：US20230252604A1
公开(公告)日：2023-08-10
申请号：US17665294
申请日：2022-02-04
Applicant: Samsung Electronics Co., Ltd.
Inventor： Zeeshan Nadir , John W. Glotzbach , Hamid R. Sheikh
CPC classification number: G06T5/002 , G06T5/10 , G06T2207/20056
Abstract: A method includes filtering an input image through a discrete cosine transform based noise filter (DCT-NF). The DCT-NF converts the input image from an original space into a perceptual space, applying gamma correction. The DCT-NF separates luminance channels of the input image from chroma channels of the input image. The DCT-NF divides the input image into overlapping patches and computes DCT transform of the patches. Each patch is a different partial portion of the input image. The DCT-NF suppresses patches that include an input DCT coefficient within a threshold range. The DCT-NF applies an inverse discrete cosine transform (IDCT) to the suppressed patches and remaining overlapping patches that include an input DCT coefficient outside the threshold range. The DCT-NF re-combines luminance and chroma channels of the IDCT-transformed patches. The DCT-NF generates a DCT noise-filtered output image by re-converting the IDCT-transformed patches to the original space by applying inverse gamma correction.
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Patent Agency Ranking
76.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：US11412136B2
公开(公告)日：2022-08-09
申请号：US16704982
申请日：2019-12-05
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamid R. Sheikh , Youngjun Yoo , John Seokjun Lee , Michael O. Polley
Abstract: A method includes, in a first mode, positioning first and second tiltable image sensor modules of an image sensor array of an electronic device so that a first optical axis of the first tiltable image sensor module and a second optical axis of the second tiltable image sensor module are substantially perpendicular to a surface of the electronic device, and the first and second tiltable image sensor modules are within a thickness profile of the electronic device. The method also includes, in a second mode, tilting the first and second tiltable image sensor modules so that the first optical axis of the first tiltable image sensor module and the second optical axis of the second tiltable image sensor module are not perpendicular to the surface of the electronic device, and at least part of the first and second tiltable image sensor modules are no longer within the thickness profile of the electronic device.
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公开(公告)号：US11388348B2
公开(公告)日：2022-07-12
申请号：US17139920
申请日：2020-12-31
Applicant: Samsung Electronics Co., Ltd.
Inventor： Long N. Le , Ruiwen Zhen , John W. Glotzbach , Hamid R. Sheikh , Ibrahim Pekkucuksen
Abstract: A method includes obtaining, using at least one processor of an electronic device, a high dynamic range (HDR) input Bayer image. The method also includes generating, using the at least one processor of the electronic device, a plurality of synthesized images at different exposure levels based on the input Bayer image. The method further includes fusing, using the at least one processor of the electronic device, the synthesized images to generate a fused image. The method also includes generating, using the at least one processor of the electronic device, a gain map based on the fused image. In addition, the method includes applying, using the at least one processor of the electronic device, a gain based on the gain map to the input Bayer image.
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79.发明申请公开(公告)号：US20210390375A1
公开(公告)日：2021-12-16
申请号：US17135573
申请日：2020-12-28
Applicant: Samsung Electronics Co., Ltd.
Inventor： Chenchi Luo , Gyeongmin Choe , Yingmao Li , Zeeshan Nadir , Hamid R. Sheikh , John Seokjun Lee , Youngjun Yoo
Abstract: A method includes obtaining, using at least one processor of an electronic device, multiple calibration parameters associated with multiple sensors of a selected mobile device. The method also includes obtaining, using the at least one processor, an identification of multiple imaging tasks. The method further includes obtaining, using the at least one processor, multiple synthetically-generated scene images. In addition, the method includes generating, using the at least one processor, multiple training images and corresponding meta information based on the calibration parameters, the identification of the imaging tasks, and the scene images. The training images and corresponding meta information are generated concurrently, different ones of the training images correspond to different ones of the sensors, and different pieces of the meta information correspond to different ones of the imaging tasks.
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公开(公告)号：US20210250510A1
公开(公告)日：2021-08-12
申请号：US16947274
申请日：2020-07-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Gyeongmin Choe , Hamid R. Sheikh , John SeokJun Lee , Youngjun Yoo
Abstract: A method includes receiving a selection of a selected zoom area on an input image frame displayed on a user interface; determining one or more candidate zoom previews proximate to the selected zoom area using a saliency detecting algorithm; and displaying the one or more candidate zoom previews on the user interface adjacent to the selected zoom area.
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