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公开(公告)号：US12230053B2
公开(公告)日：2025-02-18
申请号：US17591530
申请日：2022-02-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Zeeshan Nadir , John W. Glotzbach , Hamid R. Sheikh
Abstract: An apparatus includes a memory configured to store images and a processor. The processor is configured to receive an input image. The processor is further configured to partition a human mask in the input image using a segmentation algorithm. The processor is also configured to generate a skin map based on identifying skin in the input image using the human mask. In addition, the processor is configured to process an output image with brightening applied using the skin map.
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2.发明授权公开(公告)号：US12094086B2
公开(公告)日：2024-09-17
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
CPC classification number: G06T5/50 , G06T5/73 , G06T2207/10024 , G06T2207/20221
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.
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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：US11503221B2
公开(公告)日：2022-11-15
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.
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公开(公告)号：US20220020120A1
公开(公告)日：2022-01-20
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.
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Patent Agency Ranking
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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公开(公告)号：US10944914B1
公开(公告)日：2021-03-09
申请号：US16700763
申请日：2019-12-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Long N. Le , Hamid R. Sheikh , Zeeshan Nadir , John W. Glotzbach
Abstract: A method includes obtaining, using at least one image sensor of an electronic device, a first image frame of a scene. The method also includes using a convolutional neural network to generate, from the first image frame, multiple second image frames simulated to have different exposures. One or more objects in the scene in each second image frame are aligned with one or more corresponding objects in the scene in at least one other second image frame and are aligned with one or more corresponding objects in the scene in the first image frame. The method further includes blending the multiple second image frames to generate a final image of the scene.
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公开(公告)号：US20210042941A1
公开(公告)日：2021-02-11
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.
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公开(公告)号：US20210042897A1
公开(公告)日：2021-02-11
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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公开(公告)号：US20200265567A1
公开(公告)日：2020-08-20
申请号：US16278512
申请日：2019-02-18
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yuting Hu , Ruiwen Zhen , John W. Glotzbach , Ibrahim Pekkucuksen , Hamid R. Sheikh
Abstract: A method includes obtaining multiple image frames of a scene using at least one camera of an electronic device. The method also includes using a convolutional neural network to generate blending maps associated with the image frames. The blending maps contain or are based on both a measure of motion in the image frames and a measure of how well exposed different portions of the image frames are. The method further includes generating a final image of the scene using at least some of the image frames and at least some of the blending maps. The final image of the scene may be generated by blending the at least some of the image frames using the at least some of the blending maps, and the final image of the scene may include image details that are lost in at least one of the image frames due to over-exposure or under-exposure.
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