公开(公告)号：US20140286397A1

公开(公告)日：2014-09-25

申请号：US14348263

申请日：2012-09-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Tao Chen ,  Hariharan Ganapathy, I ,  Samir N. Hulyalkar ,  Gopi Lakshminarayanan ,  Peng Yin ,  Taoran Lu ,  Walter J. Husak

IPC: H04N19/119 ,  H04N13/00

CPC classification number: H04N19/00072 ,  H04N13/106 ,  H04N13/161 ,  H04N13/194 ,  H04N19/119 ,  H04N19/597

Abstract: A high resolution 3D image may be encoded into a first multiplexed image frame and a second multiplexed image frame in a base layer (BL) video signal and an enhancement layer (EL) video signal. The first multiplexed image frame may comprise horizontal high resolution image data for both eyes, while the second multiplexed image frame may comprise vertical high resolution image data for both eyes. Encoded symmetric-resolution image data for the 3D image may be distributed to a wide variety of devices for 3D image processing and rendering. A recipient device may reconstruct reduced resolution 3D image from one of the first multiplexed image frame or the second multiplexed image frame. A recipient device may also reconstruct high resolution 3D image by combining high resolution image data from both of the first multiplexed image frame and the second multiplexed image frame.

Abstract translation: 高分辨率3D图像可以编码到基本层（BL）视频信号和增强层（EL）视频信号中的第一多路复用图像帧和第二多路复用图像帧中。 第一多路复用图像帧可以包括用于双眼的水平高分辨率图像数据，而第二多路复用图像帧可以包括用于双眼的垂直高分辨率图像数据。 用于3D图像的编码对称分辨率图像数据可以分布到用于3D图像处理和渲染的各种设备。 接收装置可以从第一多路复用图像帧或第二多路复用图像帧之一重建降低分辨率的3D图像。 接收装置还可以通过组合来自第一多路复用图像帧和第二多路复用图像帧的高分辨率图像数据来重建高分辨率3D图像。

公开(公告)号：US20130251241A1

公开(公告)日：2013-09-26

申请号：US13796950

申请日：2013-03-12

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timo Kunkel ,  Tao Chen ,  Chun Chi Wan

IPC: G06K9/00

CPC classification number: G06K9/00201 ,  H04N13/122 ,  H04N2013/0081

Abstract: Perceptually correct noises simulating a variety of noise patterns or textures may be applied to stereo image pairs each of which comprises a left eye (LE) image and a right eye (RE) image that represent a 3D image. LE and RE images may or may not be noise removed. Depth information of pixels in the LE and RE images may be computed from, or received with, the LE and RE images. Desired noise patterns are modulated onto the 3D image or scene so that the desired noise patterns are perceived to be part of 3D objects or image details, taking into account where the 3D objects or image details are on a z-axis perpendicular to an image rendering screen on which the LE and RE images are rendered.

Abstract translation: 感知上正确的模拟各种噪声图案或纹理的噪声可以应用于立体图像对，每个立体图像对包括表示3D图像的左眼（LE）图像和右眼（RE）图像。 LE和RE图像可能会或可能不会被噪声消除。 LE和RE图像中的像素的深度信息可以从LE图像和RE图像中计算出，或者与LE图像接收。 将所需的噪声模式调制到3D图像或场景上，使得期望的噪声模式被感知为3D对象或图像细节的一部分，考虑3D对象或图像细节在垂直于图像呈现的z轴上的位置 渲染LE和RE图像的屏幕。

公开(公告)号：US12244869B2

公开(公告)日：2025-03-04

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: H04N19/119 ,  H04N19/136 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/85 ,  H04N19/117 ,  H04N19/82

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：US12212786B2

公开(公告)日：2025-01-28

申请号：US18470353

申请日：2023-09-19

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

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

IPC: H04N19/70 ,  G06T5/90 ,  H04N19/186 ,  H04N19/30 ,  H04N19/85

Abstract: In a method to improve the coding efficiency of high-dynamic range (HDR) images, a decoder parses sequence processing set (SPS) data from an input coded bitstream to detect that an HDR extension syntax structure is present in the parsed SPS data. It extracts from the HDR extension syntax structure post-processing information that includes one or more of a color space enabled flag, a color enhancement enabled flag, an adaptive reshaping enabled flag, a dynamic range conversion flag, a color correction enabled flag, or an SDR viewable flag. It decodes the input bitstream to generate a preliminary output decoded signal, and generates a second output signal based on the preliminary output signal and the post-processing information.

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：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：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：US11877000B2

公开(公告)日：2024-01-16

申请号：US17629093

申请日：2020-08-05

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Taoran Lu ,  Fangjun Pu ,  Peng Yin ,  Sean Thomas McCarthy ,  Tao Chen

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/172 ,  H04N19/33

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/172 ,  H04N19/33

Abstract: Methods and systems for canvas size scalability across the same or different bitstream layers of a video coded bitstream are described. Offset parameters for a conformance window, a reference region of interest (ROI) in a reference layer, and a current ROI in a current layer are received. The width and height of a current ROI and a reference ROI are computed based on the offset parameters and they are used to generate a width and height scaling factor to be used by a reference picture resampling unit to generate an output picture based on the current ROI and the reference ROI.

公开(公告)号：US11800151B2

公开(公告)日：2023-10-24

申请号：US17581827

申请日：2022-01-21

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N19/70 ,  H04N19/186 ,  H04N19/30 ,  H04N19/85 ,  G06T5/00

CPC classification number: H04N19/70 ,  G06T5/007 ,  H04N19/186 ,  H04N19/30 ,  H04N19/85 ,  G06T2207/20208

Abstract: In a method to improve the coding efficiency of high-dynamic range (HDR) images, a decoder parses sequence processing set (SPS) data from an input coded bitstream to detect that an HDR extension syntax structure is present in the parsed SPS data. It extracts from the HDR extension syntax structure post-processing information that includes one or more of a color space enabled flag, a color enhancement enabled flag, an adaptive reshaping enabled flag, a dynamic range conversion flag, a color correction enabled flag, or an SDR viewable flag. It decodes the input bitstream to generate a preliminary output decoded signal, and generates a second output signal based on the preliminary output signal and the post-processing information.

公开(公告)号：US11729400B2

公开(公告)日：2023-08-15

申请号：US17334631

申请日：2021-05-28

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Peng Yin ,  Guan-Ming Su ,  Taoran Lu ,  Tao Chen ,  Walter J. Husak

IPC: H04N19/50 ,  H04N19/167 ,  H04N19/117 ,  H04N19/124 ,  H04N19/17 ,  H04N19/132 ,  H04N19/182 ,  H04N19/60 ,  H04N19/70 ,  H04L43/16

CPC classification number: H04N19/167 ,  H04L43/16 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/17 ,  H04N19/182 ,  H04N19/649 ,  H04N19/70

Abstract: Sample data and metadata related to spatial regions in images may be received from a coded video signal. It is determined whether specific spatial regions in the images correspond to a specific region of luminance levels. In response to determining the specific spatial regions correspond to the specific region of luminance levels, signal processing and video compression operations are performed on sets of samples in the specific spatial regions. The signal processing and video compression operations are at least partially dependent on the specific region of luminance levels.