公开(公告)号：US20230247281A1

公开(公告)日：2023-08-03

申请号：US18134123

申请日：2023-04-13

申请人： GoPro, Inc.

发明人： Bruno César Douady ,  Michael Serge Andre Kraak ,  Guillaume Matthieu Guérin ,  Thomas Nicolas Emmanuel Veit

IPC分类号： H04N23/60 ,  H04N19/10 ,  H04N19/136 ,  H04N19/176 ,  H04N19/423 ,  H04N19/70 ,  H04N19/85 ,  H04N19/90 ,  G06T7/80 ,  H04N13/271 ,  G06T3/00 ,  G06T3/40 ,  G06T5/20 ,  G06T5/50 ,  H04N17/00 ,  H04N23/45 ,  H04N23/90 ,  H04N23/698 ,  H04N25/61

CPC分类号： H04N23/64 ,  H04N19/10 ,  H04N19/136 ,  H04N19/176 ,  H04N19/423 ,  H04N19/70 ,  H04N19/85 ,  H04N19/90 ,  G06T7/85 ,  H04N13/271 ,  G06T3/0093 ,  G06T3/4038 ,  G06T5/20 ,  G06T5/50 ,  H04N17/002 ,  H04N23/45 ,  H04N23/90 ,  H04N23/698 ,  H04N25/61 ,  H04N13/239

摘要： Systems and methods are disclosed for image signal processing. For example, methods may include receiving a current image of a sequence of images from an image sensor; combining the current image with a recirculated image to obtain a noise reduced image, where the recirculated image is based on one or more previous images of the sequence of images from the image sensor; determining a noise map for the noise reduced image, where the noise map is determined based on estimates of noise levels for pixels in the current image, a noise map for the recirculated image, and a set of mixing weights; recirculating the noise map with the noise reduced image to combine the noise reduced image with a next image of the sequence of images from the image sensor; and storing, displaying, or transmitting an output image that is based on the noise reduced image.

公开(公告)号：US20230016033A1

公开(公告)日：2023-01-19

申请号：US17934934

申请日：2022-09-23

申请人： QUALCOMM Incorporated

发明人： Amir Said ,  Xin Zhao ,  Wei-Jung Chien ,  Jianle Chen ,  Marta Karczewicz

IPC分类号： H04N19/61 ,  H04N19/117 ,  H04N19/82 ,  H04N19/593 ,  H04N19/10 ,  H04N19/192 ,  H04N19/436 ,  H04N19/615 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91

摘要： An example method of decoding video data includes obtaining, from a coded video bitstream and for a current block of the video data, an indication of an intra-prediction mode that identifies an initial predictive block; filtering, in parallel, samples in a current line of a plurality of lines of the initial predictive block based on filtered values of samples in a preceding line of the plurality of lines and unfiltered values of samples in the current line to generate filtered values for samples for the current line; and reconstructing, using intra prediction, values of samples of the current block based on the filtered values of the samples of the current initial predictive block and residual data for the current block that represents a difference between the filtered values of the samples of the current initial predictive block and the values of samples of the current block.

公开(公告)号：US20220349325A1

公开(公告)日：2022-11-03

申请号：US17865695

申请日：2022-07-15

申请人： Sun Patent Trust

发明人： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Hai Wei SUN ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC分类号： F01M13/04 ,  H04N19/70 ,  H04N19/174 ,  H04N19/105 ,  H04N19/10 ,  B01D36/00 ,  B01D45/08

摘要： A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description.

公开(公告)号：US11445177B2

公开(公告)日：2022-09-13

申请号：US17124825

申请日：2020-12-17

申请人： KT CORPORATION

发明人： Bae Keun Lee

IPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/107 ,  H04N19/70 ,  H04N19/119 ,  H04N19/182 ,  H04N19/10 ,  H04N19/44

摘要： A method for decoding a video according to the present invention may comprise: deriving a plurality of reference sample lines for a current block, selecting at least one among the plurality of reference sample lines, determining whether to apply an intra filter to a reference sample included in the selected reference sample line, selectively applying the intra filter to the reference sample according to the determination, and performing intra prediction for the current block using the reference sample.

公开(公告)号：US11336904B2

公开(公告)日：2022-05-17

申请号：US16675583

申请日：2019-11-06

申请人： Hewlett-Packard Development Company, L.P.

发明人： Mark Q. Shaw ,  Jan P. Allebach ,  Edward J. Delp

IPC分类号： H04N19/182 ,  H04N19/17 ,  H04N19/167 ,  H04N19/117 ,  H04N19/186 ,  H04N19/82 ,  H04N19/10 ,  H04N19/51 ,  H04N21/234

摘要： A video coder includes a processing resource and a non-transitory storage device containing instructions executable by the processing resource to compute a weighted Δ frame based on a saliency map and a Δ frame. The saliency map is to indicate the relative importance of each pixel in a current frame based on its perceptual significance. The Δ frame is to include differences between corresponding pixels in a current frame and a motion predicted frame.

公开(公告)号：US11297365B2

公开(公告)日：2022-04-05

申请号：US16713389

申请日：2019-12-13

申请人： AT&T Intellectual Property I, L.P. ,  AT&T Mobility II LLC

发明人： Subhabrata Sen ,  Eric Petajan ,  Shichang Xu

IPC分类号： H04N21/24 ,  H04N21/2662 ,  H04N21/2343 ,  H04N21/232 ,  H04N21/236 ,  H04N19/10 ,  H04N19/154

摘要： A processing system may obtain a downscaled version of a reference copy of a video, comprising a plurality of downscaled versions of a plurality of frames of the reference copy of the video, obtain a first recorded frame of a first variant of a plurality of variants associated with the reference copy of the video, where the plurality of variants comprises a plurality of copies of the video encoded at different bitrates, generate a first downscaled version of the first recorded frame, calculate a first plurality of image distances between the first downscaled version of the first recorded frame and the plurality of downscaled versions of the plurality of frames of the reference copy of the video, and determine a first frame index of the first recorded frame in accordance with a first least image distance from among the first plurality of image distances that is calculated.

公开(公告)号：US11196918B2

公开(公告)日：2021-12-07

申请号：US16303892

申请日：2017-05-24

申请人： GoPro, Inc.

发明人： Bruno César Douady ,  Michael Serge Andre Kraak ,  Guillaume Matthieu Guèrin ,  Thomas Nicolas Emmanuel Veit

IPC分类号： H04N5/232 ,  H04N5/247 ,  H04N17/00 ,  G06T7/80 ,  G06T3/40 ,  H04N19/10 ,  H04N19/136 ,  H04N19/176 ,  H04N19/423 ,  H04N19/70 ,  H04N19/90 ,  H04N13/271 ,  G06T5/20 ,  G06T5/50 ,  H04N5/357 ,  H04N19/85 ,  G06T3/00 ,  H04N5/225 ,  H04N13/239 ,  H04N13/122 ,  G06T5/00

摘要： Systems and methods are disclosed for image signal processing. For example, systems may include an image sensor and a processing apparatus. The image sensor captures image data using a plurality of selectable exposure times. The processing apparatus receives a first image from the image sensor captured with a first exposure time and receives a second image from the image sensor captured with a second exposure time that is less than the first exposure time. A high dynamic range image is determined based on the first image and the second image, wherein an image portion of the high dynamic range image is based on a corresponding image portion of the second image when a pixel of a corresponding image portion of the first image is saturated. An output image that is based on the high dynamic range image is stored, displayed, or transmitted.

公开(公告)号：US11064110B2

公开(公告)日：2021-07-13

申请号：US16556898

申请日：2019-08-30

申请人： GoPro, Inc.

发明人： Bruno Cesar Douady-Pleven ,  Sandeep Doshi ,  Sophana Kok

IPC分类号： H04N5/232 ,  H04N5/247 ,  H04N17/00 ,  G06T7/80 ,  G06T3/40 ,  H04N19/10 ,  H04N19/136 ,  H04N19/176 ,  H04N19/423 ,  H04N19/70 ,  H04N19/90 ,  H04N13/271 ,  G06T5/20 ,  G06T5/50 ,  H04N19/85 ,  G06T3/00 ,  H04N5/225 ,  H04N5/357 ,  H04N13/239 ,  H04N13/122 ,  G06T5/00

摘要： Systems and methods are disclosed for image signal processing. For example, methods may include receiving, by an image signal processor, one or more input image signals from one or more image sensors; determining a mapping based on the input image signal(s), wherein the mapping includes records that associate image portions of an output image with corresponding image portions of the input image signal(s); sorting the records of the mapping according to an order of the corresponding image portions of the input image signal(s); applying, by the image signal processor, image processing to image portions of the input image signal(s) to determine image portions of one or more processed images in the order; and determining, by the image signal processor, the image portions of the output image based at least in part on the mapping and the corresponding image portions of the processed image(s) in the order.

公开(公告)号：US10999541B2

公开(公告)日：2021-05-04

申请号：US16659723

申请日：2019-10-22

申请人： CANON KABUSHIKI KAISHA

发明人： Kazuhiro Yahata

IPC分类号： H04N5/357 ,  H04N5/213 ,  H04N5/217 ,  H04N9/04 ,  G06T5/00 ,  G06T7/77 ,  H04N1/58 ,  H04N1/40 ,  H04N19/10

摘要： To generate a favorable image that suppresses the occurrence of pattern noise in a method of performing patch-based noise reduction for a RAW image. In order to attain this object, the image processing apparatus of the present invention includes a pixel setting unit; a patch setting unit; and a noise reduction unit. Then, the pixel setting unit sets, for one pixel of interest, at least two kinds of pixel whose positions are different in a minimum unit of the color filter array as the plurality of reference pixels. Further, the patch setting unit sets, for one pixel of interest, at least two kinds of reference patch whose shapes are different.

公开(公告)号：US10750146B2

公开(公告)日：2020-08-18

申请号：US16133629

申请日：2018-09-17

申请人： NETFLIX, INC.

发明人： Andrey Norkin

IPC分类号： H04N9/64 ,  H04N19/132 ,  H04N19/85 ,  H04N9/68 ,  H04N9/77 ,  H04N19/186 ,  H04N19/10 ,  H04N19/86

摘要： One embodiment of the present invention sets forth a technique for correcting color values. The technique includes downsampling first color space values to generate downsampled color space values and upsampling the downsampled color space values to generate second color space values. The technique further includes modifying at least one component value included in the downsampled color space values based on a first component value included in the first color space values, a second component value included in the second color space values, and an approximation of a nonlinear transfer function.