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公开(公告)号：US20220020128A1
公开(公告)日：2022-01-20
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.
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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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53.发明申请公开(公告)号：US20220012903A1
公开(公告)日：2022-01-13
申请号：US16946956
申请日：2020-07-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kushal K. Vyas , Yingmao Li , Chenchi Luo , George Q. Chen , Hamid R. Sheikh , Youngjun Yoo , Michael O. Polley
Abstract: A method includes obtaining, using at least one processor, an input image frame. The method also includes identifying, using the at least one processor, one or more regions of the input image frame containing redundant information. In addition, the method includes performing, using the at least one processor, an image processing task using the input image frame. The image processing task is guided based on the one or more identified regions of the input image frame. The method may further include obtaining, using the at least one processor, a coarse depth map associated with the input image frame. Performing the image processing task may include refining the coarse depth map to produce a refined depth map, where the refining of the coarse depth map is guided based on the one or more identified regions of the input image frame.
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公开(公告)号：US11128809B2
公开(公告)日：2021-09-21
申请号：US16277630
申请日：2019-02-15
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ruiwen Zhen , John Glotzbach , Ibrahim Pekkucuksen , Hamid R. Sheikh
Abstract: An electronic device, method, and computer readable medium for compositing high dynamic range frames are provided. The electronic device includes a camera, and a processor coupled to the camera. The processor registers the plurality of multi-exposure frames with a hybrid of matched features to align non-reference frames with a reference frame; generates blending maps of the plurality of multi-exposure frames to reduce moving ghost artifacts and identify local areas that are well-exposed in the plurality of multi-exposure frames; and blends the plurality of multi-exposure frames weighted by the blending maps using a two-step weight-constrained exposure fusion technique into a high dynamic range (HDR) frame.
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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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Patent Agency Ranking
公开(公告)号：US11025942B2
公开(公告)日：2021-06-01
申请号：US15892141
申请日：2018-02-08
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamid R. Sheikh , Youngjun Yoo , Michael Polley , Chenchi Luo , David Liu
IPC: H04N19/48 , H04N19/167 , H04N19/11 , H04N19/44
Abstract: Methods and systems for compressed domain progressive application of computer vision techniques. A method for decoding video data includes receiving a video stream that is encoded for multi-stage decoding. The method includes partially decoding the video stream by performing one or more stages of the multi-stage decoding. The method includes determining whether a decision for a computer vision system can be identified based on the partially decoded video stream. Additionally, the method includes generating the decision for the computer vision system based on decoding of the video stream. A system for encoding video data includes a processor configured to receive the video data from a camera, encode the video data received from the camera into a video stream for consumption by a computer vision system, and include metadata with the encoded video stream to indicate whether a decision for the computer vision system can be identified from the metadata.
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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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59.发明申请公开(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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