-
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.
-
公开(公告)号：US20230022753A1
公开(公告)日：2023-01-26
申请号：US17938013
申请日：2022-10-04
Applicant: Samsung Electronics Co., Ltd.
Inventor： Anqi Yang , John W. Glotzbach , Hamid R. Sheikh
Abstract: A method includes obtaining, using at least one image sensor of an electronic device, a first image frame and multiple second image frames of a scene. Each of the second image frames has an exposure time different from an exposure time of the first image frame. The method also includes generating, using at least one processor, blur kernels indicating a motion direction of the first image frame using an optical flow network. The method further includes refining, using the at least one processor, the blur kernels using a convolutional neural network. In addition, the method includes generating, using the at least one processor, a target image frame of the scene using the refined blur kernels and occlusion masks for the second image frames.
-
93.发明申请公开(公告)号：US20230021726A1
公开(公告)日：2023-01-26
申请号：US17587309
申请日：2022-01-28
Applicant: Samsung Electronics Co., Ltd.
Inventor： Long N. Le , Hamid R. Sheikh , John W. Glotzbach
Abstract: A method includes obtaining multiple images of a scene using at least one red-green-blue-white (RGBW) image sensor. The method also includes generating multi-channel frames at different exposure levels from the images. The method further includes estimating motion across exposure differences between the different exposure levels using a white channel of the multi-channel frames as a guidance signal to generate multiple motion maps. The method also includes estimating saturation across the exposure differences between the different exposure levels to generate multiple saturation maps. The method further includes using the generated motion maps and saturation maps to recover saturations from the different exposure levels and generate a saturation-free RGBW frame. In addition, the method includes processing the saturation-free RGBW frame to generate a final image of the scene.
-
94.发明申请公开(公告)号：US20220301184A1
公开(公告)日：2022-09-22
申请号：US17591350
申请日：2022-02-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Gyeongmin Choe , Yingmao Li , John Seokjun Lee , Hamid R. Sheikh , Michael O. Polley
IPC: G06T7/207 , H04N19/577 , H04N19/139
Abstract: A method includes obtaining multiple video frames. The method also includes determining whether a bi-directional optical flow between the multiple video frames satisfies an image quality criterion for bi-directional consistency. The method further includes identifying a non-linear curve based on pixel coordinate values from at least two of the video frames. The at least two video frames include first and second video frames. The method also includes generating interpolated video frames between the first and second video frames by applying non-linear interpolation based on the non-linear curve. In addition, the method includes outputting the interpolated video frames for presentation.
-
公开(公告)号：US11354781B2
公开(公告)日：2022-06-07
申请号：US17103809
申请日：2020-11-24
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ruiwen Zhen , John W. Glotzbach , Hamid R. Sheikh
Abstract: A method includes obtaining, using at least one processor, an image of a scene including image data in each of multiple channels of a color space. The method also includes decomposing a channel of the image into a first base layer and a first detail layer. The method further includes generating a first enhanced detail layer by manipulating a characteristic of the first detail layer. The method also includes decomposing the first base layer into a second base layer and a second detail layer. The method further includes generating a second enhanced detail layer by manipulating a characteristic of the second detail layer. In addition, the method includes combining the first enhanced detail layer, the second enhanced detail layer, and the second base layer to obtain an enhanced image of the scene.
-
Patent Agency Ranking
公开(公告)号：US11276154B2
公开(公告)日：2022-03-15
申请号：US16947106
申请日：2020-07-17
Applicant: Samsung Electronics Co., Ltd.
Inventor： Deboleena Roy , Long N. Le , Hamid R. Sheikh
Abstract: A method includes capturing a plurality of first images using a first image sensor and a plurality of second images using a second image sensor. The method also includes generating a short single view, short depth map, long single view, and long depth map from the first and second images. The method further includes generating a multi-frame depth map using the short single view, short depth map, long single view, and long depth map. The method also includes generating a gain map using the multi-frame depth map and lighting conditions, where the lighting conditions introduce a relighting effect into the gain map. The method further includes generating a relit short single view and a relit long single view by applying the gain map to the short and long single views. In addition, the method includes generating a relit image by fusing the relit short and long single views.
-
公开(公告)号：US20220021802A1
公开(公告)日：2022-01-20
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.
-
公开(公告)号：US11151731B2
公开(公告)日：2021-10-19
申请号：US16727751
申请日：2019-12-26
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ruiwen Zhen , John W. Glotzbach , Hamid R. Sheikh
Abstract: A method includes receiving a reference image and a non-reference image; dividing the reference image into a plurality of tiles; determining, using an electronic device, a motion vector map using coarse-to-fine based motion vector estimation; and generating an output frame using the motion vector map with the reference image and the non-reference image.
-
公开(公告)号：US20210314474A1
公开(公告)日：2021-10-07
申请号：US16837785
申请日：2020-04-01
Applicant: Samsung Electronics Co., Ltd.
Inventor： Anqi Yang , John W. Glotzbach , Hamid R. Sheikh
Abstract: A method includes obtaining, using at least one image sensor of an electronic device, a first image frame and multiple second image frames of a scene. Each of the second image frames has an exposure time different from an exposure time of the first image frame. The method also includes encoding, using at least one processor, each of the first image frame and the second image frames using a convolutional neural network to generate a corresponding feature map. The method further includes aligning, using the at least one processor, encoded features of the feature map corresponding to the first image frame with encoded features of the feature maps corresponding to the second image frames.
-
公开(公告)号：US20210281813A1
公开(公告)日：2021-09-09
申请号：US16811585
申请日：2020-03-06
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kushal K. Vyas , Yingmao Li , Chenchi Luo , George Q. Chen , Hamid R. Sheikh , Youngjun Yoo , Michael O. Polley
IPC: H04N13/128 , G06T3/40 , G06T5/00 , G06T5/50
Abstract: A method includes obtaining, using at least one processor, first and second input image frames, where the first and second input image frames are associated with first and second image planes, respectively. The method also includes obtaining, using the at least one processor, a depth map associated with the first input image frame. The method further includes producing another version of the depth map by performing one or more times: (a) projecting, using the at least one processor, the first input image frame to the second image plane in order to produce a projected image frame using (i) the depth map and (ii) information identifying a conversion from the first image plane to the second image plane and (b) adjusting, using the at least one processor, at least one of the depth map and the information identifying the conversion from the first image plane to the second image plane.
-
-
-
-
-
-
-
-
-
Search Results
109
records
(took 0.03 seconds)
