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公开(公告)号：US12086971B2
公开(公告)日：2024-09-10
申请号：US17586511
申请日：2022-01-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ibrahim Pekkucuksen , Kaimo Lin , Hamid R. Sheikh
CPC classification number: G06T5/92 , G06T5/40 , G06T2207/10024
Abstract: An apparatus includes at least one processing device configured to obtain an input image and determine a cumulative distribution function (CDF) histogram from a luminance or luma (Y) channel of the input image. The at least one processing device is also configured to determine an entry CDF histogram in a CDF histogram lookup table (LUT) closest to the determined CDF histogram. The at least one processing device is further configured to apply a Y channel global tone mapping (GTM) curve to the input image based on one or more parameters assigned to the entry CDF histogram from the CDF histogram LUT.
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公开(公告)号：US20230073970A1
公开(公告)日：2023-03-09
申请号：US17651226
申请日：2022-02-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kaimo Lin , Hamid R. Sheikh
Abstract: A method includes obtaining a Bayer input image. The method also includes generating, using at least one processing device of an electronic device, multiple YUV image frames based on the Bayer input image using non-linear scaling, where the YUV image frames are associated with different exposure settings. The method further includes generating, using the at least one processing device of the electronic device, a fused image based on the YUV image frames. In addition, the method includes applying, using the at least one processing device of the electronic device, global tone-mapping to the fused image in order to generate a tone-mapped fused image, where the global tone-mapping is based on a first cubic spline curve.
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公开(公告)号：US11127140B2
公开(公告)日：2021-09-21
申请号：US16399960
申请日：2019-04-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kaimo Lin
Abstract: The present disclosure describes a system and method for background identification for videos with large foreground objects. The method includes dividing a video clip into a multiple short video clips, each of which overlaps with neighboring short video clips of the multiple short video clips, detecting, in each short video clip, multiple background motion candidates, linking the background motion candidates between the neighboring short video clips to form multiple linked groups of background motion candidates, and identifying a linked group of background motion candidates that is most dominant among the multiple linked groups of background motion candidates.
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公开(公告)号：US20210248769A1
公开(公告)日：2021-08-12
申请号：US17027106
申请日：2020-09-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Chenchi Luo , Yingmao Li , Kaimo Lin , Youngjun Yoo
IPC: G06T7/593 , H04N13/271 , H04N13/128
Abstract: A method includes obtaining at least three input image frames of a scene captured using at least three imaging sensors. The input image frames include a reference image frame and multiple non-reference image frames. The method also includes generating multiple disparity maps using the input image frames. Each disparity map is associated with the reference image frame and a different non-reference image frame. The method further includes generating multiple confidence maps using the input image frames. Each confidence map identifies weights associated with one of the disparity maps. In addition, the method includes generating a depth map of the scene using the disparity maps and the confidence maps. The imaging sensors are arranged to define multiple baseline directions, where each baseline direction extends between the imaging sensor used to capture the reference image frame and the imaging sensor used to capture a different non-reference image frame.
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公开(公告)号：US20200349717A1
公开(公告)日：2020-11-05
申请号：US16399960
申请日：2019-04-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kaimo Lin
Abstract: The present disclosure describes a system and method for background identification for videos with large foreground objects. The method includes dividing a video clip into a multiple short video clips, each of which overlaps with neighboring short video clips of the multiple short video clips, detecting, in each short video clip, multiple background motion candidates, linking the background motion candidates between the neighboring short video clips to form multiple linked groups of background motion candidates, and identifying a linked group of background motion candidates that is most dominant among the multiple linked groups of background motion candidates.
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Patent Agency Ranking
公开(公告)号：US11823353B2
公开(公告)日：2023-11-21
申请号：US17106676
申请日：2020-11-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Chenchi Luo , Yingmao Li , Kaimo Lin , Youngjun Yoo
CPC classification number: G06T5/002 , G06N3/08 , G06T5/50 , G06T7/593 , G06T2207/10012 , G06T2207/20081 , G06T2207/20084
Abstract: A method includes processing, using at least one processor of an electronic device, multiple reference images of a scene using a first convolutional neural network (CNN) to generate a confidence map and a disparity map. The method also includes generating, using the at least one processor, an initial Bokeh image based on the disparity map and the reference images using a depth-of-field (DoF) renderer. The method further includes refining, using the at least one processor, the initial Bokeh image using a second CNN to generate a refined Bokeh image, where the second CNN uses the confidence map, the disparity map, and the reference images to generate the refined Bokeh image.
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公开(公告)号：US20220036513A1
公开(公告)日：2022-02-03
申请号：US17106676
申请日：2020-11-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Chenchi Luo , Yingmao Li , Kaimo Lin , Youngjun Yoo
Abstract: A method includes processing, using at least one processor of an electronic device, multiple reference images of a scene using a first convolutional neural network (CNN) to generate a confidence map and a disparity map. The method also includes generating, using the at least one processor, an initial Bokeh image based on the disparity map and the reference images using a depth-of-field (DoF) renderer. The method further includes refining, using the at least one processor, the initial Bokeh image using a second CNN to generate a refined Bokeh image, where the second CNN uses the confidence map, the disparity map, and the reference images to generate the refined Bokeh image.
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公开(公告)号：US11132772B2
公开(公告)日：2021-09-28
申请号：US16712882
申请日：2019-12-12
Applicant: Samsung Electronics Co., Ltd.
Inventor： Chenchi Luo , Yingmao Li , Youngjun Yoo , George Q. Chen , Kaimo Lin , David D. Liu , Gyeongmin Choe
IPC: G06T5/00 , G06T7/80 , H04N13/128
Abstract: A method includes obtaining a first image of a scene using a first image sensor of an electronic device and a second image of the scene using a second image sensor of the electronic device. The method also includes generating a first feature map from the first image and a second feature map from the second image. The method further includes generating a third feature map based on the first feature map, the second feature map, and an asymmetric search window. The method additionally includes generating a depth map by restoring spatial resolution to the third feature map.
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公开(公告)号：US11961206B2
公开(公告)日：2024-04-16
申请号：US17651226
申请日：2022-02-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kaimo Lin , Hamid R. Sheikh
IPC: G06T3/40 , G06T3/4015 , G06T5/00 , H04N23/73 , H04N23/951
CPC classification number: G06T3/4015 , G06T5/009 , H04N23/73 , H04N23/951
Abstract: A method includes obtaining a Bayer input image. The method also includes generating, using at least one processing device of an electronic device, multiple YUV image frames based on the Bayer input image using non-linear scaling, where the YUV image frames are associated with different exposure settings. The method further includes generating, using the at least one processing device of the electronic device, a fused image based on the YUV image frames. In addition, the method includes applying, using the at least one processing device of the electronic device, global tone-mapping to the fused image in order to generate a tone-mapped fused image, where the global tone-mapping is based on a first cubic spline curve.
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公开(公告)号：US20230052082A1
公开(公告)日：2023-02-16
申请号：US17586511
申请日：2022-01-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ibrahim Pekkucuksen , Kaimo Lin , Hamid R. Sheikh
Abstract: An apparatus includes at least one processing device configured to obtain an input image and determine a cumulative distribution function (CDF) histogram from a luminance or luma (Y) channel of the input image. The at least one processing device is also configured to determine an entry CDF histogram in a CDF histogram lookup table (LUT) closest to the determined CDF histogram. The at least one processing device is further configured to apply a Y channel global tone mapping (GTM) curve to the input image based on one or more parameters assigned to the entry CDF histogram from the CDF histogram LUT.
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