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1. 发明申请

WO2013049179A1 DUAL-LAYER FRAME-COMPATIBLE FULL-RESOLUTION STEREOSCOPIC 3D VIDEO DELIVERY 审中-公开
标题翻译：双层框架兼容全解析立体3D视频传送
公开(公告)号：WO2013049179A1
公开(公告)日：2013-04-04
申请号：PCT/US2012/057302
申请日：2012-09-26
申请人： DOLBY LABORATORIES LICENSING CORPORATION , CHEN, Tao , HULYALKAR, Samir, N. , LAKSHMINARAYANAN, Gopi
发明人： CHEN, Tao , HULYALKAR, Samir, N. , LAKSHMINARAYANAN, Gopi
IPC分类号： H04N13/00
CPC分类号： H04N19/186 , H04N13/161 , H04N13/194 , H04N19/597
摘要： 3D Images may be encoded into reduced resolution image data in a base layer and enhancement layer (EL) image data in one or more enhancement layers. Different types of data compositions may be used in the EL image data. The different types of data compositions may include unfiltered full resolution image data for one or both of left eye and right eye perspectives, or unfiltered full resolution image data for a color channel, e.g., luminance channel, or unfiltered full resolution image data for selected portions of image frames, or fallback data compositions. Based on deciding factors including bitrate requirements and bandwidth constraints, different types of data compositions may be alternatively used by an upstream device to deliver the best possible 3D image data to a wide variety of downstream devices. The upstream device may inform a downstream device of specific types of data compositions with EL image data descriptors.
摘要翻译： 3D图像可以编码成一个或多个增强层中的基本层和增强层（EL）图像数据中的降低分辨率图像数据。可以在EL图像数据中使用不同类型的数据组合。不同类型的数据组合可以包括用于左眼和右眼视角中的一个或两个的未过滤的全分辨率图像数据，或者用于颜色通道的未过滤的全分辨率图像数据，例如亮度通道或用于所选部分的未过滤的全分辨率图像数据的图像帧或后备数据组合。基于包括比特率要求和带宽约束的决定因素，不同类型的数据组合可以由上游设备替代地使用，以将最佳可能的3D图像数据传送到各种各样的下游设备。上游设备可以向下游设备通知具有EL图像数据描述符的特定类型的数据组合。

2. 发明申请

WO2013040170A1 FRAME-COMPATIBLE FULL RESOLUTION STEREOSCOPIC 3D COMPRESSION AND DECOMPRESSION 审中-公开
标题翻译：框架兼容全分辨率立体3D压缩和分解
公开(公告)号：WO2013040170A1
公开(公告)日：2013-03-21
申请号：PCT/US2012/055099
申请日：2012-09-13
申请人： DOLBY LABORATORIES LICENSING CORPORATION , CHEN, Tao , HULYALKAR, Samir N. , LAKSHMINARAYANAN, Gopi
发明人： CHEN, Tao , HULYALKAR, Samir N. , LAKSHMINARAYANAN, Gopi
IPC分类号： H04N13/00
CPC分类号： H04N19/52 , H04N13/161 , H04N13/194 , H04N19/33 , H04N19/59 , H04N19/597
摘要： A high resolution 3D Image may be encoded into a reduced resolution image in a base layer and a full resolution unfiltered image in one or more enhancement layers. Encoded asymmetric-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 the reduced resolution image and the full resolution unfiltered image for 3D image rendering with high subjective perceptual quality due to interocular masking. Full resolution unfiltered images may be alternating between left and right eyes.
摘要翻译：高分辨率3D图像可以被编码到基本层中的降低分辨率图像和一个或多个增强层中的全分辨率未过滤图像。用于3D图像的编码的不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。收件人设备可以由于双目掩蔽而重建具有高主观感知质量的3D图像呈现的缩小分辨率图像和全分辨率未过滤图像。全分辨率未过滤的图像可能在左眼和右眼之间交替。

3. 发明申请

WO2022164929A1 IMAGE ENHANCEMENT VIA GLOBAL AND LOCAL RESHAPING 审中-公开
公开(公告)号：WO2022164929A1
公开(公告)日：2022-08-04
申请号：PCT/US2022/013941
申请日：2022-01-26
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： SU, Guan-Ming , KADU, Harshad , KLITTMARK, Per Jonas Andreas , CHEN, Tao
IPC分类号： H04N19/117 , H04N19/154 , H04N19/182 , H04N19/186 , H04N19/98
摘要： A first reshaping mapping is performed on a first image represented in a first domain to generate a second image represented in a second domain. The first domain is of a first dynamic range different from a second dynamic range of which the second domain is. A second reshaping mapping is performed on the second image represented in the second domain to generate a third image represented in the first domain. The third image is perceptually different from the first image in at least one of: global contrast, global saturation, local contrast, local saturation, etc. A display image is derived from the third image and rendered on a display device.

4. 发明申请

WO2019060778A1 BACKWARD COMPATIBLE DISPLAY MANAGEMENT METADATA COMPRESSION 审中-公开
公开(公告)号：WO2019060778A1
公开(公告)日：2019-03-28
申请号：PCT/US2018/052292
申请日：2018-09-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： SU, Guan-Ming , GADGIL, Neeraj J. , CHEN, Tao , QU, Sheng
IPC分类号： H04N19/70 , H04N21/84 , H04N19/463
摘要： Sequence-level parameters are generated for an image frame sequence including sequence-level indicators for indicating metadata types present for each image frame in the sequence of image frames. Frame-present parameters are generated for a specific image frame in the sequence including frame-present indicators corresponding to the metadata types as indicated in the sequence-level parameters. The frame-present indicators identify first metadata types for which metadata parameter values are to be encoded in a coded bitstream as metadata payloads. The image frame sequence, the sequence-level parameters, the frame-present parameters and the metadata payloads are encoded in the coded bitstream. A recipient device can generate, from the specific image frame based partly on the metadata parameter values determined for the first metadata types, a target display image for a target display.

5. 发明申请

WO2015130541A1 LUMINANCE BASED CODING TOOLS FOR VIDEO COMPRESSION 审中-公开
标题翻译：基于LUMINANCE的视频压缩编码工具
公开(公告)号：WO2015130541A1
公开(公告)日：2015-09-03
申请号：PCT/US2015/016549
申请日：2015-02-19
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： YIN, Peng , SU, Guan-Ming , LU, Taoran , CHEN, Tao , HUSAK, Walter J.
IPC分类号： H04N19/17 , H04N19/167 , H04N19/117 , H04N19/124 , H04N19/132
CPC分类号： H04N19/167 , H04L43/16 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/17 , H04N19/182 , H04N19/649 , H04N19/70
摘要： 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.
摘要翻译：可以从编码的视频信号接收与图像中的空间区域相关的样本数据和元数据。确定图像中的特定空间区域是否对应于亮度级别的特定区域。响应于确定对应于亮度级的特定区域的特定空间区域，对特定空间区域中的样本集执行信号处理和视频压缩操作。信号处理和视频压缩操作至少部分地依赖于亮度水平的特定区域。

6. 发明申请

WO2014130343A2 DISPLAY MANAGEMENT FOR HIGH DYNAMIC RANGE VIDEO 审中-公开
标题翻译：高动态范围视频显示管理
公开(公告)号：WO2014130343A2
公开(公告)日：2014-08-28
申请号：PCT/US2014/016304
申请日：2014-02-13
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： ATKINS, Robin , KUNKEL, Timo , BEIER, Thaddeus , CHEN, Tao
IPC分类号： H04N9/67
CPC分类号： G09G3/2003 , G06T5/007 , G06T5/20 , G06T7/13 , G06T2207/10024 , G06T2207/20016 , G06T2207/20208 , G09G2340/06 , H04N5/20 , H04N9/67 , H04N9/68
摘要： A display management processor receives an input image with enhanced dynamic range to be displayed on a target display which has a different dynamic range than a reference display. The input image is first transformed into a perceptually-corrected IPT color space. A non-linear mapping function generates a first tone-mapped signal by mapping the intensity of the input signal from the reference dynamic range into the target dynamic range. The intensity (I) component of the first tone-mapped signal is sharpened to preserve details, and the saturation of the color (P and T) components is adjusted to generate a second tone-mapped output image. A color gamut mapping function is applied to the second tone-mapped output image to generate an image suitable for display onto the target display. The display management pipeline may also be adapted to adjust the intensity and color components of the displayed image according to specially defined display modes.
摘要翻译：显示管理处理器接收具有增强的动态范围的输入图像，以显示在具有与参考显示不同的动态范围的目标显示器上。输入图像首先被转换成感知校正的IPT颜色空间。非线性映射函数通过将来自参考动态范围的输入信号的强度映射到目标动态范围来生成第一音调映射信号。第一音调映射信号的强度（I）分量被锐化以保留细节，并且调整颜色（P和T）分量的饱和度以产生第二色调映射输出图像。将色域映射函数应用于第二色调映射输出图像，以产生适于在目标显示器上显示的图像。显示管理管线还可以适于根据特定的显示模式来调整所显示的图像的强度和颜色分量。

7. 发明申请

WO2014052292A1 INTER-LAYER REFERENCE PICTURE PROCESSING FOR CODING STANDARD SCALABILITY 审中-公开
标题翻译：用于编码标准可扩展性的层间参考图像处理
公开(公告)号：WO2014052292A1
公开(公告)日：2014-04-03
申请号：PCT/US2013/061352
申请日：2013-09-24
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： YIN, Peng , LU, Taoran , CHEN, Tao
IPC分类号： H04N19/33 , H04N19/46 , H04N19/61 , H04N19/70 , H04N19/187 , H04N19/12 , H04N19/85 , H04N19/40
CPC分类号： H04N19/187 , H04N19/12 , H04N19/33 , H04N19/40 , H04N19/46 , H04N19/59 , H04N19/61 , H04N19/70 , H04N19/85
摘要： 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.
摘要翻译：视频数据以编码标准分层比特流编码。给定基层（BL）和一个或多个增强层（EL）信号，使用符合第一编码标准的BL编码器将BL信号编码为编码的BL流。响应于BL信号和EL信号，参考处理单元（RPU）确定RPU处理参数。响应于RPU处理参数和BL信号，RPU产生层间参考信号。使用符合第二编码标准的EL编码器，EL信号被编码成编码的EL流，其中EL信号的编码至少部分地基于层间参考信号。具有符合第一和第二编码标准的RPU和视频解码器的接收机可以解码BL和EL编码流。

8. 发明申请

WO2019160986A1 IMAGE RESHAPING IN VIDEO CODING USING RATE DISTORTION OPTIMIZATION 审中-公开
公开(公告)号：WO2019160986A1
公开(公告)日：2019-08-22
申请号：PCT/US2019/017891
申请日：2019-02-13
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： YIN, Peng , PU, Fangjun , LU, Taoran , CHEN, Tao , HUSAK, Walter J. , MCCARTHY, Sean Thomas
IPC分类号： H04N19/503 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/107 , H04N19/117 , H04N19/82 , H04N19/85 , H04N19/147
摘要： 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.

9. 发明申请

WO2017011636A1 SIGNAL RESHAPING AND CODING FOR HDR AND WIDE COLOR GAMUT SIGNALS 审中-公开
标题翻译：用于HDR和宽彩色游戏信号的信号修复和编码
公开(公告)号：WO2017011636A1
公开(公告)日：2017-01-19
申请号：PCT/US2016/042229
申请日：2016-07-14
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： YIN, Peng , LU, Taoran , PU, Fangjun , CHEN, Tao , HUSAK, Walter J.
IPC分类号： H04N19/70 , H04N19/30 , H04N19/186
CPC分类号： H04N19/70 , G06T5/007 , G06T2207/20208 , H04N19/186 , H04N19/30 , H04N19/85
摘要： 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.
摘要翻译：在提高高动态范围（HDR）图像的编码效率的方法中，解码器从输入编码比特流解码序列处理集（SPS）数据，以检测解析的SPS数据中存在HDR扩展语法结构。它从HDR扩展语法结构后处理信息中提取，其包括启用颜色空间的标志，增强颜色标志，自适应重新绘制使能标志，动态范围转换标志，颜色校正使能标志或 SDR可见标志。它对输入比特流进行解码以产生初步输出解码信号，并且基于初步输出信号和后处理信息产生第二输出信号。

10. 发明申请

WO2023033991A1 RESHAPER FOR LEARNING-BASED IMAGE/VIDEO CODING 审中-公开
公开(公告)号：WO2023033991A1
公开(公告)日：2023-03-09
申请号：PCT/US2022/039593
申请日：2022-08-05
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： YIN, Peng , PU, Fangjun , LU, Taoran , ARORA, Arjun , SU, Guan-Ming , CHEN, Tao , MCCARTHY, Sean Thomas , HUSAK, Walter J.
IPC分类号： H04N19/117 , H04N19/186 , H04N19/85 , H04N19/82 , H04N19/30 , H04N19/46 , G06N3/00
摘要： An input image represented in an input domain is received from an input video signal. Forward reshaping is performed on the input image to generate a forward reshaped image represented in a reshaped image domain. Non-reshaping encoding operations are performed to encode the reshaped image into an encoded video signal. At least one of the non-reshaping encoding operations is implemented with an ML model that has been previously trained with training images in one or more training datasets in a preceding training stage. A recipient device of the encoded video signal is caused to generate a reconstructed image from the forward reshaped image.

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