公开(公告)号：US10165288B2

公开(公告)日：2018-12-25

申请号：US14649198

申请日：2013-12-04

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.

公开(公告)号：US10165251B2

公开(公告)日：2018-12-25

申请号：US14406173

申请日：2013-06-12

Applicant: DOLBY INTERNATIONAL AB ,  Dolby Laboratories Licensing Corporation

Inventor： Gopi Lakshminarayanan ,  Samir Hulyalkar ,  Tao Chen ,  Klaas Heinrich Schueuer ,  Amit Gulati ,  Hariharan Ganapathy ,  Philipp Kraetzer

IPC: H04N13/161 ,  H04N13/128 ,  H04N13/139 ,  H04N19/597 ,  H04N19/117 ,  H04N19/154 ,  H04N19/187 ,  H04N19/59 ,  H04N13/00

Abstract: Stereoscopic video data and corresponding depth map data for stereoscopic and auto-stereoscopic displays are coded using a coded base layer and one or more coded enhancement layers. Given a 3D input picture and corresponding input depth map data, a side-by-side and a top-and-bottom picture are generated based on the input picture. Using an encoder, the side-by-side picture is coded to generate a coded base layer Using the encoder and a texture reference processing unit (RPU), the top-and-bottom picture is encoded to generate a first enhancement layer, wherein the first enhancement layer is coded based on the base layer stream, and using the encoder and a depth-map RPU, depth data for the side-by-side picture are encoded to generate a second enhancement layer, wherein the second enhancement layer is coded based on to the base layer. Alternative single, dual, and multi-layer depth map delivery systems are also presented.

公开(公告)号：US10063845B2

公开(公告)日：2018-08-28

申请号：US14781560

申请日：2014-03-17

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Gopi Lakshminarayan ,  Samir Hulyalkar ,  Tao Chen ,  Hariharan Ganapathy ,  Santosh Chilkunda

IPC: H04N13/00 ,  H04N13/04 ,  H04N13/02

CPC classification number: H04N13/302 ,  H04N13/128 ,  H04N13/144 ,  H04N13/207 ,  H04N13/327

Abstract: A 3D display is characterized by a quality of viewing experience (QVE) mapping which represents a display-specific input-output relationship between input depth values and output QVE values. Examples of QVE mappings based on a metric of “viewing blur” are presented. Given reference depth data generated for a reference display and a representation of an artist's mapping function, which represents an input-output relationship between original input depth data and QVE data generated using a QVE mapping for a reference display, a decoder may reconstruct the reference depth data and apply an inverse QVE mapping for a target display to generate output depth data optimized for the target display.

公开(公告)号：US20170264905A1

公开(公告)日：2017-09-14

申请号：US15603262

申请日：2017-05-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Peng Yin ,  Taoran Lu ,  Tao Chen

IPC: H04N19/187 ,  H04N19/12 ,  H04N19/33 ,  H04N19/40 ,  H04N19/46 ,  H04N19/59 ,  H04N19/61 ,  H04N19/85 ,  H04N19/70

CPC classification number: H04N19/187 ,  H04N19/12 ,  H04N19/33 ,  H04N19/40 ,  H04N19/46 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85

Abstract: Video data are coded in a coding-standard layered bit stream. Given a base layer (BL) and one or more enhancement layer (EL) signals, the BL signal is coded into a coded BL stream using a BL encoder which is compliant to a first coding standard. In response to the BL signal and the EL signal, a reference processing unit (RPU) determines RPU processing parameters. In response to the RPU processing parameters and the BL signal, the RPU generates an inter-layer reference signal. Using an EL encoder which is compliant to a second coding standard, the EL signal is coded into a coded EL stream, where the encoding of the EL signal is based at least in part on the inter-layer reference signal. Receivers with an RPU and video decoders compliant to both the first and the second coding standards may decode both the BL and the EL coded streams.

公开(公告)号：US09679366B2

公开(公告)日：2017-06-13

申请号：US15030346

申请日：2014-10-21

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ning Xu ,  Tao Chen ,  James E. Crenshaw ,  Samir N. Hulyalkar

IPC: G09G5/02 ,  G06T5/00 ,  H04N1/60 ,  H04N9/67 ,  G06T5/50 ,  H04N1/40 ,  H04N5/57 ,  H04N21/431

CPC classification number: G06T5/007 ,  G06T5/008 ,  G06T5/50 ,  G06T2207/20208 ,  H04N1/40006 ,  H04N1/6052 ,  H04N5/57 ,  H04N9/67 ,  H04N21/4318

Abstract: Novel methods and systems for color grading are disclosed. The color grading process for a visual dynamic range image can be guided by information relating to the color grading of other images such as the standard dynamic range image.

公开(公告)号：US09607364B2

公开(公告)日：2017-03-28

申请号：US15035477

申请日：2014-11-19

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ning Xu ,  Tao Chen ,  James E. Crenshaw ,  Timo Kunkel ,  Bongsun Lee

IPC: G06T5/00 ,  G06T5/40 ,  H04N1/60 ,  H04N1/407 ,  G06T7/90

CPC classification number: G06T5/007 ,  G06T5/40 ,  G06T7/90 ,  G06T2207/20016 ,  G06T2207/20028 ,  G06T2207/20208 ,  H04N1/4072 ,  H04N1/6027

Abstract: Novel methods and systems for inverse tone mapping are disclosed. A scene can be analyzed to obtain highlight detection from bright light sources and specular reflections. An inverse tone mapping curve can be calculated based on the lower dynamic range and higher dynamic range displays. Multi-scale filtering can be applied to reduce noise or artifacts.

公开(公告)号：US20160286225A1

公开(公告)日：2016-09-29

申请号：US14430795

申请日：2013-09-24

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Peng Yin ,  Taoran Lu ,  Tao Chen

IPC: H04N19/187 ,  H04N19/33 ,  H04N19/12 ,  H04N19/59

CPC classification number: H04N19/187 ,  H04N19/12 ,  H04N19/33 ,  H04N19/40 ,  H04N19/46 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85

Abstract: Video data are coded in a coding-standard layered bit stream. Given a base layer (BL) and one or more enhancement layer (EL) signals, the BL signal is coded into a coded BL stream using a BL encoder which is compliant to a first coding standard. In response to the BL signal and the EL signal, a reference processing unit (RPU) determines RPU processing parameters. In response to the RPU processing parameters and the BL signal, the RPU generates an inter-layer reference signal. Using an EL encoder which is compliant to a second coding standard, the EL signal is coded into a coded EL stream, where the encoding of the EL signal is based at least in part on the inter-layer reference signal. Receivers with an RPU and video decoders compliant to both the first and the second coding standards may decode both the BL and the EL coded streams.

公开(公告)号：US09230338B2

公开(公告)日：2016-01-05

申请号：US14631950

申请日：2015-02-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timo Kunkel ,  Robin Atkins ,  Tao Chen ,  Samir N. Hulyalkar ,  Jaclyn Anne Pytlarz

IPC: H04N9/76 ,  G06T7/40 ,  G06T5/00 ,  G06T11/60 ,  H04N5/445 ,  H04N21/426

CPC classification number: G06T7/408 ,  G06T5/00 ,  G06T11/60 ,  H04N5/44504 ,  H04N21/42653

Abstract: A method for merging graphics and high dynamic range video data is disclosed. In a video receiver, a display management process uses metadata to map input video data from a first dynamic range into the dynamic range of available graphics data. The remapped video signal is blended with the graphics data to generate a video composite signal. An inverse display management process uses the metadata to map the video composite signal to an output video signal with the first dynamic range. To alleviate perceptual tone-mapping jumps during video scene changes, a metadata transformer transforms the metadata to transformed so that on a television (TV) receiver metadata values transition smoothly between consecutive scenes. The TV receiver receives the output video signal and the transformed metadata to generate video data mapped to the dynamic range of the TV's display.

Abstract translation: 公开了一种用于合并图形和高动态范围视频数据的方法。 在视频接收机中，显示管理过程使用元数据将来自第一动态范围的输入视频数据映射到可用图形数据的动态范围。 重新映射的视频信号与图形数据混合以产生视频复合信号。 反向显示管理过程使用元数据将视频合成信号映射到具有第一动态范围的输出视频信号。 为了减轻视频场景变化期间的感知色调映射跳跃，元数据变换器将元数据转换为转换，使得在电视（TV）接收机上的元数据值在连续场景之间平滑地转换。 TV接收机接收输出视频信号和变换后的元数据，生成映射到TV显示器的动态范围的视频数据。

公开(公告)号：US20150256860A1

公开(公告)日：2015-09-10

申请号：US14631950

申请日：2015-02-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timo Kunkel ,  Robin Atkins ,  Tao Chen ,  Samir N. Hulyalkar ,  Jaclyn Anne Pytlarz

IPC: H04N21/2365 ,  G06T11/60 ,  G06T7/40 ,  G06T5/00

CPC classification number: G06T7/408 ,  G06T5/00 ,  G06T11/60 ,  H04N5/44504 ,  H04N21/42653

Abstract: A method for merging graphics and high dynamic range video data is disclosed. In a video receiver, a display management process uses metadata to map input video data from a first dynamic range into the dynamic range of available graphics data. The remapped video signal is blended with the graphics data to generate a video composite signal. An inverse display management process uses the metadata to map the video composite signal to an output video signal with the first dynamic range. To alleviate perceptual tone-mapping jumps during video scene changes, a metadata transformer transforms the metadata to transformed so that on a television (TV) receiver metadata values transition smoothly between consecutive scenes. The TV receiver receives the output video signal and the transformed metadata to generate video data mapped to the dynamic range of the TV's display.

Abstract translation: 公开了一种用于合并图形和高动态范围视频数据的方法。 在视频接收机中，显示管理过程使用元数据将来自第一动态范围的输入视频数据映射到可用图形数据的动态范围。 重新映射的视频信号与图形数据混合以产生视频复合信号。 反向显示管理过程使用元数据将视频合成信号映射到具有第一动态范围的输出视频信号。 为了减轻视频场景变化期间的感知色调映射跳跃，元数据变换器将元数据转换为转换，使得在电视（TV）接收机上元数据值在连续场景之间平滑地转换。 TV接收机接收输出视频信号和变换后的元数据，生成映射到TV显示器的动态范围的视频数据。

公开(公告)号：US20150201178A1

公开(公告)日：2015-07-16

申请号：US14406173

申请日：2013-06-12

Applicant: DOLBY INTERNATIONAL AB ,  Dolby Laboratories Licensing Corporation

Inventor： Gopi Lakshminarayanan ,  Samir Hulyalkar ,  Tao Chen ,  Klaas Heinrich Schueuer ,  Amit Gulati ,  Hariharan Ganapathy ,  Philipp Kraetzer

IPC: H04N13/00 ,  H04N19/597 ,  H04N19/59 ,  H04N19/117 ,  H04N19/187

CPC classification number: H04N13/161 ,  H04N13/128 ,  H04N13/139 ,  H04N19/117 ,  H04N19/154 ,  H04N19/187 ,  H04N19/59 ,  H04N19/597 ,  H04N2013/0081 ,  H04N2213/005

Abstract: Stereoscopic video data and corresponding depth map data for stereoscopic and auto-stereoscopic displays are coded using a coded base layer and one or more coded enhancement layers. Given a 3D input picture and corresponding input depth map data, a side-by-side and a top-and-bottom picture are generated based on the input picture. Using an encoder, the side-by-side picture is coded to generate a coded base layer Using the encoder and a texture reference processing unit (RPU), the top-and-bottom picture is encoded to generate a first enhancement layer, wherein the first enhancement layer is coded based on the base layer stream, and using the encoder and a depth-map RPU, depth data for the side-by-side picture are encoded to generate a second enhancement layer, wherein the second enhancement layer is coded based on to the base layer. Alternative single, dual, and multi-layer depth map delivery systems are also presented.

Abstract translation: 使用编码的基本层和一个或多个编码的增强层对立体视觉数据和用于立体视觉和自动立体显示的相应的深度图数据进行编码。 给定3D输入图像和对应的输入深度图数据，基于输入图像生成并排和顶部和底部的图像。 使用编码器对并排图像进行编码以生成编码基本层使用编码器和纹理参考处理单元（RPU），编码顶部和底部图像以生成第一增强层，其中， 第一增强层基于基层流进行编码，并且使用编码器和深度图RPU，对并排图像的深度数据进行编码以产生第二增强层，其中第二增强层基于 到基层。 还提供了替代的单层，双层和多层深度图传送系统。