公开(公告)号：US12108061B2

公开(公告)日：2024-10-01

申请号：US18616841

申请日：2024-03-26

Applicant: Dolby Laboratories Licensing Corporation

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

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

CPC classification number: H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

Abstract: 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：US20240244271A1

公开(公告)日：2024-07-18

申请号：US18616959

申请日：2024-03-26

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Jaclyn Anne Pytlarz

IPC: H04N19/87 ,  H04N1/60 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98

CPC classification number: H04N19/87 ,  H04N1/6058 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98 ,  G09G2320/06 ,  G09G2340/06

Abstract: 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：US12015793B1

公开(公告)日：2024-06-18

申请号：US18410975

申请日：2024-01-11

Applicant: Dolby Laboratories Licensing Corporation

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

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

CPC classification number: H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

Abstract: 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：US20240155143A1

公开(公告)日：2024-05-09

申请号：US18413691

申请日：2024-01-16

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

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

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

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

Abstract: 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：US11979589B2

公开(公告)日：2024-05-07

申请号：US18508088

申请日：2023-11-13

Applicant: Dolby Laboratories Licensing Corporation

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

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

CPC classification number: H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

Abstract: 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：US20230133582A1

公开(公告)日：2023-05-04

申请号：US17925444

申请日：2021-05-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Robin Atkins ,  Ian Godin ,  Peng Yin

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

Abstract: 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：US11523127B2

公开(公告)日：2022-12-06

申请号：US17281380

申请日：2020-03-11

Applicant: Dolby Laboratories Licensing Corporation

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

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

Abstract: 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：US11301972B2

公开(公告)日：2022-04-12

申请号：US16485404

申请日：2018-03-01

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Alexander Partin ,  Kimball Darr Thurston, III ,  Robin Atkins

IPC: G06T11/00 ,  G06T5/00 ,  G06T5/50 ,  G09G5/02 ,  G09G5/10 ,  H04N1/60 ,  H04N9/68 ,  H04N19/30 ,  H04N19/46

Abstract: A method for adjusting color saturation can determine a saturation adjustment from metadata that specifies an adjustment of color saturation based on a first display and from precomputed data, such as data in one or more look-up tables, that specifies a relationship between image data in a first color space and image data in a second color space. An input image in the first color space is converted into an image in the second color space, and the color saturation is adjusted while the image data is in the second color space, which can be a geometrically non-symmetrical color space.

公开(公告)号：US20220038723A1

公开(公告)日：2022-02-03

申请号：US17281380

申请日：2020-03-11

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N19/30 ,  H04N19/172 ,  H04N19/46 ,  H04N19/187 ,  H04N19/70

Abstract: 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：US11183143B2

公开(公告)日：2021-11-23

申请号：US16667571

申请日：2019-10-29

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Robin Atkins

IPC: G09G5/00 ,  G09G5/10 ,  G09G5/377 ,  H04N5/445 ,  G09G5/36 ,  H04N5/57

Abstract: A processor receives input video data of a video dynamic range and input dynamic metadata. It also receives: input graphics data of a graphics dynamic range and input static metadata, display identification data from a target display over a video interface, and a blending priority map characterizing a per-pixel priority of output pixels in an image generated by blending the input video data and the input graphics data. A video mapping function and a graphics mapping function which map data from the input video and graphics dynamic ranges to the target dynamic range are generated based on the dynamic and static metadata. Then, the input and graphics data are blended based on the blending priority map and a per-pixel decision to map pixels to the target dynamic range using either the video mapping function or the graphics mapping function.