公开(公告)号：US11936888B1

公开(公告)日：2024-03-19

申请号：US18506758

申请日：2023-11-10

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: H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/31 ,  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：US20240015315A1

公开(公告)日：2024-01-11

申请号：US18334306

申请日：2023-06-13

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

CPC classification number: 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：US11871015B2

公开(公告)日：2024-01-09

申请号：US17950087

申请日：2022-09-21

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

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：US11490095B1

公开(公告)日：2022-11-01

申请号：US17240866

申请日：2021-04-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Taoran Lu ,  Fangjun Pu ,  Peng Yin ,  Tao Chen ,  Walter J. Husak

IPC: H04N19/159 ,  H04N19/124 ,  H04N19/182 ,  H04N19/44

Abstract: Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for integrating reshaping into a next generation video codec for encoding and decoding the images, wherein reshaping allows part of the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. A variety of architectures are discussed, including: an out-of-loop reshaping architecture, an in-loop-for intra pictures only reshaping architecture, an in-loop architecture for prediction residuals, and a hybrid in-loop reshaping architecture. Syntax methods for signaling reshaping parameters, and image-encoding methods optimized with respect to reshaping are also presented.

公开(公告)号：US20220224946A1

公开(公告)日：2022-07-14

申请号：US17707581

申请日：2022-03-29

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Peng Yin ,  Fangjun Pu ,  Taoran Lu ,  Tao Chen ,  Walter J. Husak ,  Sean Thomas McCarthy

IPC: H04N19/85 ,  H04N19/119 ,  H04N19/136 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.

公开(公告)号：US11323728B2

公开(公告)日：2022-05-03

申请号：US17212701

申请日：2021-03-25

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

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：US11252401B2

公开(公告)日：2022-02-15

申请号：US16053643

申请日：2018-08-02

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timo Kunkel ,  Robin Atkins ,  Tao Chen

IPC: H04N17/02 ,  H04N9/64 ,  G06K19/06 ,  G06K7/14 ,  G06T7/90

Abstract: In some embodiments, a display device is disclosed to optically communicating display parameters. The device receives input image data. Embedded in the input image data is a code value identifying a request for a portion of a display parameter of the display device. The device decodes the embedded code value. The device generates an optical image based on the request and transmits the generated optical image to an output of the display device to communicate the requested portion of the requested display parameter.

公开(公告)号：US11146803B2

公开(公告)日：2021-10-12

申请号：US14772051

申请日：2014-02-14

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Guan-Ming Su ,  Samir N. Hulyalkar ,  Tao Chen

IPC: H04N19/33 ,  H04N19/124 ,  H04N19/157 ,  H04N19/44 ,  H04N19/593 ,  H04N19/70 ,  G06T3/40

Abstract: An encoder receives an input enhanced dynamic range (EDR) image to be stored or transmitted using multiple coding formats in a layered representation. A layer decomposer generates a lower dynamic range (LDR) image from the EDR image. One or more base layer (BL) encoders encode the LDR image to generate a main coded BL stream and one or more secondary coded BL streams, where each secondary BL stream is coded in a different coding format than the main coded BL stream. A single enhancement layer (EL) coded stream and related metadata are generated using the main coded BL stream, the LDR image, and the input EDR image. An output coded stream includes the coded EL stream, the metadata, and either the main coded BL stream or one of the secondary coded BL streams. Computation-scalable decoding and display management processes for EDR images are also described.

公开(公告)号：US10977809B2

公开(公告)日：2021-04-13

申请号：US16214632

申请日：2018-12-10

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Anustup Kumar Atanu Choudhury ,  Robin Atkins ,  Tao Chen

IPC: G06T7/11 ,  G06T7/13 ,  G06T7/155 ,  G06T7/194 ,  G06T7/254 ,  G06T7/40 ,  H04N19/132 ,  H04N19/139 ,  H04N19/172 ,  H04N19/46 ,  H04N19/543

Abstract: Motion characteristics related to foreground objects and background regions bordering the foreground objects in images are determined. A frame rate conversion (FRC)-related metadata portion is generated based on the motion characteristics. The FRC-related metadata portion is to be used for determining an optimal FRC operational mode with a downstream device for the images. The images are encoded into a video stream. The FRC-related metadata portion is encoded into the video stream as a part of image metadata. The video stream is caused to be transmitted to the downstream device.

公开(公告)号：US10958922B2

公开(公告)日：2021-03-23

申请号：US16580820

申请日：2019-09-24

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Peng Yin ,  Taoran Lu ,  Tao Chen

IPC: H04N19/33 ,  H04N19/105 ,  H04N19/59 ,  H04N19/80

Abstract: The precision of up-sampling operations in a layered coding system is preserved when operating on video data with high bit-depth. In response to bit-depth requirements of the video coding or decoding system, scaling and rounding parameters are determined for a separable up-scaling filter. Input data are first filtered across a first spatial direction using a first rounding parameter to generate first up-sampled data. First intermediate data are generated by scaling the first up-sampled data using a first shift parameter. The intermediate data are then filtered across a second spatial direction using a second rounding parameter to generate second up-sampled data. Second intermediate data are generated by scaling the second up-sampled data using a second shift parameter. Final up-sampled data may be generated by clipping the second intermediate data.