公开(公告)号：US10110956B2

公开(公告)日：2018-10-23

申请号：US14915750

申请日：2014-09-04

申请人： VID SCALE, INC.

发明人： Yuriy Reznik ,  Eduardo Asbun ,  Robert L. Olesen ,  Gregory S. Sternberg ,  Louis Kerofsky ,  Ralph Neff ,  Rahul Vanam

IPC分类号： H04N5/445 ,  H04N21/462 ,  H04N21/2343 ,  H04N21/422 ,  H04N21/442 ,  H04N21/845 ,  H04N21/238 ,  H04N21/258 ,  H04N21/4223 ,  H04N21/2662 ,  H04N5/44

摘要： Visual information may be delivered to streaming-capable devices in a viewing environment, such as a home environment or a commercial environment. The visual information can be adapted to user behavior and/or viewing conditions in such a way as to deliver a satisfactory user experience while conserving network resources, such as bandwidth and/or capacity. Viewing distance and/or ambient light, which may affect viewing conditions in a viewing environment, may be estimated. Bandwidth may be reduced by eliminating details that may not be perceived by the user in the estimated viewing conditions (e.g., by determining a spatial resolution (e.g. a maximum spatial resolution) perceptible under the viewing conditions and not exceeding that spatial resolution).

公开(公告)号：US20220132123A1

公开(公告)日：2022-04-28

申请号：US17442699

申请日：2020-03-25

申请人： VID SCALE, INC.

发明人： Louis Kerofsky ,  Yuwen He ,  Philippe Hanhart

IPC分类号： H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/126 ,  H04N19/14 ,  H04N19/60

摘要： Systems, methods, and instrumentalities are disclosed for obtaining coded video data comprising quantized transform coefficients for a plurality of blocks, obtaining a first precision factor associated with a first block for performing at least one decoding function on the first block, obtaining a second precision factor associated with a second block for performing the at least one decoding function on the second block, and performing the at least one decoding function on the quantized transform coefficients for the first block using the first precision factor and on the quantized transform coefficients for the second block using the second precision factor.

公开(公告)号：US10652588B2

公开(公告)日：2020-05-12

申请号：US15761425

申请日：2016-09-21

申请人： Vid Scale, Inc.

发明人： Louis Kerofsky ,  Yuwen He ,  Yan Ye ,  Arash Vosoughi

IPC分类号： H04N19/186 ,  H04N19/98 ,  G06T5/00 ,  H04N19/70

摘要： Systems, methods, and instrumentalities are disclosed for inverse shaping for high dynamic range (HDR) video coding. A video coding device, e.g., such as a decoder, may determine a plurality of pivot points associated with a plurality of piecewise segments of an inverse reshaping model. The plurality of pivot points may be determined based on an indication received via a message. Each piecewise segment may be defined by a plurality of coefficients. The video coding device may receive an indication of a first subset of coefficients associated with the plurality of piecewise segments. The video coding device may calculate a second subset of coefficients based on the first subset of coefficients and the plurality of pivot points. The video coding device may generate an inverse reshaping model using one or more of the plurality of pivot points, the first subset of coefficients, and the second subset of coefficients.

公开(公告)号：US10609395B2

公开(公告)日：2020-03-31

申请号：US15748095

申请日：2016-07-28

申请人： Vid Scale, Inc.

发明人： Louis Kerofsky ,  Yuwen He ,  Yan Ye

IPC分类号： H04N19/186 ,  H04N19/117 ,  H04N19/157 ,  H04N19/85 ,  H04N19/70 ,  H04N19/169 ,  H04N9/64

摘要： A high dynamic range (HDR) signal processing device may receive a video signal and an operating mode indication. The operating mode indication may indicate a format of the video signal, for example, an HDR format or a non-DR format. Whether to perform adaptive reshaping on the video signal may be determined based on the operating mode indication. For example, it may be determined to perform the adaptive reshaping if the operating mode indicates that the video signal is in an HDR format. It may be determined to bypass the adaptive reshaping if the operating mode indicates that the video signal is in the non-HDR format. Multiple types of HDR reconstruction metadata may be received via a network abstraction layer (NAL) unit.

公开(公告)号：US20180309995A1

公开(公告)日：2018-10-25

申请号：US15565276

申请日：2016-04-21

申请人： Vid Scale, Inc.

发明人： Yuwen He ,  Yan Ye ,  Louis Kerofsky ,  Arash Vosoughi ,  Ralph Neff

IPC分类号： H04N19/126 ,  H04N19/14 ,  H04N19/98 ,  H04N19/31 ,  H04N19/82 ,  H04N19/105 ,  H04N19/186

CPC分类号： H04N19/126 ,  H04N19/105 ,  H04N19/124 ,  H04N19/14 ,  H04N19/157 ,  H04N19/186 ,  H04N19/31 ,  H04N19/82 ,  H04N19/98

摘要： A video sequence may include a first-temporal level picture and a second-temporal level picture. The first-temporal level picture may be associated with a first temporal level, and the second-temporal level picture may be associated with a second temporal level. The second-temporal level picture may reference the first-temporal level picture. A first chroma quantization parameter (QP) may be determined based on a temporal level of the first-temporal level picture. A second chroma QP may be determined based on a temporal level of the second-temporal level picture. The first-temporal level picture may be encoded based on the first chroma QP to the first-temporal level picture and/or the second-temporal level picture may be encoded based on the second chroma QP to the second-temporal level picture. The first chroma QP may be different than the second chroma QP.

公开(公告)号：US20180288381A1

公开(公告)日：2018-10-04

申请号：US15765338

申请日：2016-10-03

申请人： Vid Scale, Inc.

发明人： Yuwen He ,  Yan Ye ,  Louis Kerofsky

IPC分类号： H04N9/64 ,  H04N9/77 ,  H04N7/01 ,  H04N11/24 ,  H04N19/12 ,  H04N19/186

CPC分类号： H04N9/646 ,  H04N1/6005 ,  H04N7/0135 ,  H04N9/77 ,  H04N11/28 ,  H04N19/12 ,  H04N19/186 ,  H04N19/85

摘要： Color correction in high dynamic range video (HDR) using 2D look-up table (LUT) may be provided. The color correction may be applied in a decoder after decoding the HDR video signal. For example, the color correction may be applied before, during, or after chroma upsampling of the HDR video signal. The 2D LUT may include a representation of the color space of the HDR video signal. The color correction may include applying triangle interpolation to the sample values of the color component of the color space. The 2D LUT may be estimated by an encoder and signaled to the decoder. The encoder may decide to reuse a prior-signaled 2D LUT or use a new 2D LUT.

公开(公告)号：US20180278967A1

公开(公告)日：2018-09-27

申请号：US15761425

申请日：2016-09-21

申请人： Vid Scale, Inc.

发明人： Louis Kerofsky ,  Yuwen He ,  Yan Ye ,  Arash Vosoughi

IPC分类号： H04N19/98 ,  H04N19/186

CPC分类号： H04N19/98 ,  G06T5/009 ,  H04N19/186 ,  H04N19/70

摘要： Systems, methods, and instrumentalities are disclosed for inverse shaping for high dynamic range (HDR) video coding. A video coding device, e.g., such as a decoder, may determine a plurality of pivot points associated with a plurality of piecewise segments of an inverse reshaping model. The plurality of pivot points may be determined based on an indication received via a message. Each piecewise segment may be defined by a plurality of coefficients. The video coding device may receive an indication of a first subset of coefficients associated with the plurality of piecewise segments. The video coding device may calculate a second subset of coefficients based on the first subset of coefficients and the plurality of pivot points. The video coding device may generate an inverse reshaping model using one or more of the plurality of pivot points, the first subset of coefficients, and the second subset of coefficients.

公开(公告)号：US20180242006A1

公开(公告)日：2018-08-23

申请号：US15748095

申请日：2016-07-28

申请人： Vid Scale, Inc.

发明人： Louis Kerofsky ,  Yuwen He ,  Yan Ye

IPC分类号： H04N19/186 ,  H04N19/117 ,  H04N19/157 ,  H04N9/64 ,  H04N19/169

CPC分类号： H04N19/186 ,  H04N9/646 ,  H04N19/117 ,  H04N19/157 ,  H04N19/188 ,  H04N19/70 ,  H04N19/85

摘要： A high dynamic range (HDR) signal processing device may receive a video signal and an operating mode indication. The operating mode indication may indicate a format of the video signal, for example, an HDR format or a non-HDR format. Whether to perform adaptive reshaping on the video signal may be determined based on the operating mode indication. For example, it may be determined to perform the adaptive reshaping if the operating mode indicates that the video signal is in an HDR format. It may be determined to bypass the adaptive reshaping if the operating mode indicates that the video signal is in the non-HDR format. Multiple types of HDR reconstruction metadata may be received via a network abstraction layer (NAL) unit.

公开(公告)号：US20180241966A1

公开(公告)日：2018-08-23

申请号：US15957887

申请日：2018-04-19

申请人： VID SCALE, INC.

发明人： Yuriy Reznik ,  Gregory S. Sternberg ,  Ariela Zeira ,  Liangping Ma ,  Yong He ,  Anantharaman Balasubramanian ,  Yan Ye ,  Louis Kerofsky ,  Ralph Neff ,  Zhifeng Chen

IPC分类号： H04N7/14 ,  H04N21/4223 ,  H04N21/422 ,  H04N7/15 ,  H04N21/2343

CPC分类号： H04N7/147 ,  H04N7/152 ,  H04N21/2343 ,  H04N21/23439 ,  H04N21/422 ,  H04N21/4223

摘要： A device may control a video communication via transcoding and/or traffic shaping. The device may include a multipoint control unit (MCU) and/or a server. The device may receive one or more video streams from one or more devices. The device may analyze a received video stream to determine a viewing parameter. The viewing parameter may include a user viewing parameter, a device viewing parameter, and/or a content viewing parameter. The device may modify a video stream based on the viewing parameter. Modifying the video stream may include re-encoding the video stream, adjusting an orientation, removing a video detail, and/or adjusting a bit rate. The device may send the modified video stream to another device. The device may determine a hit rate for the video stream based on the viewing parameter. The device may indicate the bit rate by sending a feedback message and/or by signaling a bandwidth limit.

公开(公告)号：US10045050B2

公开(公告)日：2018-08-07

申请号：US14690089

申请日：2015-04-17

申请人： Vid Scale, Inc.

发明人： Rahul Vanam ,  Louis Kerofsky ,  Yuriy Reznik

IPC分类号： H04N19/80 ,  H04N19/182 ,  H04N19/117 ,  H04N19/136 ,  H04N19/85 ,  H04N19/154 ,  H04N19/162 ,  H04N19/164

摘要： A perceptual filter may be implemented to filter one or more spatial frequencies from a video signal that are below a contrast sensitivity limit of a viewer of the video signal. The perceptual filter may be configured to adapt one or more perceptual filter parameters on a pixel-basis based on, for example, content, viewing distance, display density, contrast ratio, display luminance, background luminance, and/or age of the viewer. A spatial cutoff frequency of the perceptual filter may be mapped to a contrast sensitivity. The perceptual filter may be used as a preprocessing step for a video encoder so as to lower an encoded bitrate. Temporal filtering of the video frames may be used to maintain continuity of a spatial cutoff frequency to ensure the perceptual filtering effects are not identified as motion by a video encoder, and the temporal filtering may be restricted to static areas of a frame.