公开(公告)号：US20240251093A1

公开(公告)日：2024-07-25

申请号：US18616841

申请日：2024-03-26

申请人： Dolby Laboratories Licensing Corporation

发明人： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Fangjun Pu ,  Sean Thomas McCarthy ,  Walter J. Husak ,  Tao Chen ,  Guan-Ming Su

IPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

摘要： Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

公开(公告)号：US12041275B1

公开(公告)日：2024-07-16

申请号：US18616959

申请日：2024-03-26

申请人： DOLBY LABORATORIES LICENSING CORPORATION

发明人： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Jaclyn Anne Pytlarz

IPC分类号： H04N19/82 ,  H04N1/60 ,  H04N19/46 ,  H04N19/85 ,  H04N19/87 ,  H04N19/98

CPC分类号： H04N19/87 ,  H04N1/6058 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98 ,  G09G2320/06 ,  G09G2340/06

摘要： In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

公开(公告)号：US12028555B2

公开(公告)日：2024-07-02

申请号：US18405874

申请日：2024-01-05

申请人： DOLBY LABORATORIES LICENSING CORPORATION

发明人： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Jaclyn Anne Pytlarz

IPC分类号： H04N19/82 ,  H04N1/60 ,  H04N19/46 ,  H04N19/85 ,  H04N19/87 ,  H04N19/98

CPC分类号： H04N19/87 ,  H04N1/6058 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98 ,  G09G2320/06 ,  G09G2340/06

摘要： In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

公开(公告)号：US20240171760A1

公开(公告)日：2024-05-23

申请号：US18430444

申请日：2024-02-01

申请人： Dolby Laboratories Licensing Corporation

发明人： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Fangjun Pu ,  Sean Thomas McCarthy ,  Walter J. Husak ,  Tao Chen ,  Guan-Ming Su

IPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

摘要： Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

公开(公告)号：US20240155144A1

公开(公告)日：2024-05-09

申请号：US18413720

申请日：2024-01-16

申请人： DOLBY LABORATORIES LICENSING CORPORATION

发明人： Neil W. Messmer ,  Robin Atkins ,  Steve Margerm ,  Peter W. Longhurst

IPC分类号： H04N19/30 ,  G06T9/00 ,  G09G5/02 ,  H04N1/60 ,  H04N9/69 ,  H04N21/235 ,  H04N21/4402

CPC分类号： H04N19/30 ,  G06T9/00 ,  G09G5/02 ,  H04N1/603 ,  H04N9/69 ,  H04N21/235 ,  H04N21/440227 ,  G06F3/1454

摘要： Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.

公开(公告)号：US20240080465A1

公开(公告)日：2024-03-07

申请号：US18508088

申请日：2023-11-13

申请人： Dolby Laboratories Licensing Corporation

发明人： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Fangjun Pu ,  Sean Thomas McCarthy ,  Walter J. Husak ,  Tao Chen ,  Guan-Ming Su

IPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

摘要： Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

公开(公告)号：US11917171B2

公开(公告)日：2024-02-27

申请号：US18219344

申请日：2023-07-07

申请人： DOLBY LABORATORIES LICENSING CORPORATION

发明人： Neil W. Messmer ,  Robin Atkins ,  Steve Margerm ,  Peter W. Longhurst

IPC分类号： H04N19/30 ,  G06T9/00 ,  G09G5/02 ,  H04N1/60 ,  H04N9/69 ,  H04N21/235 ,  H04N21/4402 ,  G06F3/14

CPC分类号： H04N19/30 ,  G06T9/00 ,  G09G5/02 ,  H04N1/603 ,  H04N9/69 ,  H04N21/235 ,  H04N21/440227 ,  G06F3/1454

摘要： Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.

公开(公告)号：US11870948B2

公开(公告)日：2024-01-09

申请号：US17925444

申请日：2021-05-26

申请人： Dolby Laboratories Licensing Corporation

发明人： Robin Atkins ,  Ian Godin ,  Peng Yin

IPC分类号： H04N19/70 ,  H04N19/172 ,  H04N19/177 ,  H04N21/4402 ,  H04N19/167

CPC分类号： H04N19/70 ,  H04N19/167 ,  H04N19/172 ,  H04N19/177 ,  H04N21/440281

摘要： Metadata and methods for variable-frame rate (VFR) video playback are presented. Proposed metadata include syntax parameters related to the presentation time duration, picture source type (e.g., original, duplicate, or interpolated), picture position in a scene (e.g., first, last, or in the middle), and motion-related information with respect to a previous picture. A decoder may use these metadata to apply appropriate frame-rate conversion techniques to reduce artifacts during VFR playback.

公开(公告)号：US11818372B2

公开(公告)日：2023-11-14

申请号：US18096425

申请日：2023-01-12

申请人： Dolby Laboratories Licensing Corporation

发明人： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Fangjun Pu ,  Sean Thomas McCarthy ,  Walter J. Husak ,  Tao Chen ,  Guan-Ming Su

IPC分类号： H04N19/31 ,  H04N19/187 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

摘要： Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

公开(公告)号：US11743550B2

公开(公告)日：2023-08-29

申请号：US17617537

申请日：2020-06-26

申请人： Dolby Laboratories Licensing Corporation

发明人： Robin Atkins ,  Per Jonas Andreas Klittmark

IPC分类号： H04N21/485 ,  H04N21/435 ,  H04N21/84

CPC分类号： H04N21/4854 ,  H04N21/435 ,  H04N21/84

摘要： Apparatus and methods for providing solutions to the problem of preserving original creative intent for video playback on a target display are presented herein. According to one aspect, a video bitstream includes metadata with a flag indicative of creative intent for a target display. This metadata may include numerous fields that denote characteristics such as content type, content sub-type, intended white point, whether or not to use the video in Reference Mode, intended sharpness, intended noise reduction, intended MPEG noise reduction, intended Frame Rate Conversion, intended Average Picture Level, and intended color. This metadata is designed to make it effortless for the content creators to tag their content. The metadata can be added to the video content at multiple points, the status of the flag is set to TRUE or FALSE to indicate whether the metadata was added by the content creator or a third party.