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1. 发明申请

WO2017015397A1 VIDEO CODING AND DELIVERY WITH BOTH SPATIAL AND DYNAMIC RANGE SCALABILITY 审中-公开
标题翻译：视频编码和交付与两个空间和动态范围的可扩展性
公开(公告)号：WO2017015397A1
公开(公告)日：2017-01-26
申请号：PCT/US2016/043192
申请日：2016-07-20
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： SU, Guan-Ming , QU, Sheng , HULYALKAR, Samir N. , BROOKS, David
IPC分类号： H04N19/30 , H04N19/33 , H04N19/70 , H04N19/59
CPC分类号： H04N19/30 , H04N19/33 , H04N19/59 , H04N19/70
摘要： In a method to code and transmit scalable HDR video signals, HDR signals are processed and encoded in the IPT-PQ color space to generate a base layer at reduced spatial resolution and/or dynamic range, and an enhancement layer with a residual signal. A signal reshaping block before the base layer encoder allows for improved coding of HDR signals using a reduced bit depth.A decoder can use a BL decoder and backward reshaping to generate a decoded BL HDR signal at a reduced dynamic range and/or spatial resolution, or it can combine the decoded BL HDR signal and the EL stream to generate a decoded HDR signal at full dynamic range and full resolution.
摘要翻译：在编码和发送可缩放HDR视频信号的方法中，将HDR信号在IPT-PQ色彩空间中进行处理和编码，以在降低的空间分辨率和/或动态范围内产生基本层，以及具有残留信号的增强层。在基层编码器之前的信号整形块允许使用减小的比特深度改进HDR信号的编码。解码器可以使用BL解码器和后向重新整形来以减小的动态范围和/或空间分辨率产生解码的BL HDR信号，或者它可以组合解码的BL HDR信号和EL流以在全动态范围和全分辨率下产生解码的HDR信号。

2. 发明申请

WO2014163793A2 DISTRIBUTION OF MULTI-FORMAT HIGH DYNAMIC RANGE VIDEO USING LAYERED CODING 审中-公开
标题翻译：使用分层编码的多格式高动态范围视频分配
公开(公告)号：WO2014163793A2
公开(公告)日：2014-10-09
申请号：PCT/US2014/016544
申请日：2014-02-14
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： SU, Guan-Ming , HULYALKAR, Samir N. , CHEN, Tao , QU, Sheng
IPC分类号： H04N19/33
CPC分类号： H04N19/33 , G06T3/40 , H04N19/124 , H04N19/157 , H04N19/44 , H04N19/593 , H04N19/70
摘要： 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.
摘要翻译：编码器以分层的形式接收使用多个编码格式存储或发送的输入增强动态范围（EDR）图像。层分解器从EDR图像生成较低的动态范围（LDR）图像。一个或多个基本层（BL）编码器对LDR图像进行编码以产生主编码BL流和一个或多个二次编码BL流，其中每个次BL流以与主编码BL流不同的编码格式进行编码。使用主编码BL流，LDR图像和输入EDR图像来生成单个增强层（EL）编码流和相关元数据。输出编码流包括编码的EL流，元数据以及主编码BL流或二次编码BL流中的一个。还描述了EDR图像的计算可扩展解码和显示管理过程。

3. 发明申请

WO2016183234A1 BACKLIGHT CONTROL AND DISPLAY MAPPING FOR HIGH DYNAMIC RANGE IMAGES 审中-公开
标题翻译：用于高动态范围图像的背光控制和显示映射
公开(公告)号：WO2016183234A1
公开(公告)日：2016-11-17
申请号：PCT/US2016/031920
申请日：2016-05-11
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： FARRELL, Suzanne , DALY, Scott , ATKINS, Robin , KUNKEL, Timo , WARD, Gregory John , HULYALKAR, Samir N. , XU, Ning
IPC分类号： G09G3/34 , G09G3/36 , G06K9/00
CPC分类号： G09G3/3406 , G06K9/00711 , G09G3/34 , G09G3/36 , G09G2310/0235 , G09G2320/0233 , G09G2320/0247 , G09G2320/0271 , G09G2320/0276 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2320/066 , G09G2320/103 , G09G2340/16 , G09G2360/16 , G09G2370/04
摘要： Systems and methods are disclosed for dynamically adjusting the backlight of a display during video playback. Given an input video stream and associated minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the frame min, mid, or max luminance values are filtered using a temporal filter (320) to generate a filtered output value for each frame. The instantaneous dynamic range of a target display is determined (330) based on the filtered output value and the minimum and maximum brightness values of the display. A backlight control level is computed based on the instantaneous dynamic range, and the input signal is tone mapped by a display management process to be displayed on the target display at the selected backlight level. The design of a temporal filter based on an exponential moving average filter and scene-change detection is presented.
摘要翻译：公开了用于在视频播放期间动态地调整显示器的背光的系统和方法。给定视频流中的视频帧的输入视频流和相关联的最小，平均或最大亮度值，使用时间滤波器（320）对帧最小，中间或最大亮度值的函数的值进行滤波以产生每帧的滤波输出值。基于滤波的输出值和显示器的最小和最大亮度值来确定（330）目标显示器的瞬时动态范围。基于瞬时动态范围计算背光控制电平，并且通过显示管理处理对输入信号进行色调映射，以在所选择的背光级显示在目标显示器上。提出了基于指数移动平均滤波器和场景变化检测的时间滤波器的设计。

4. 发明申请

WO2012173745A1 FUSED REGION-BASED VDR PREDICTION 审中-公开
标题翻译：基于区域的VDR预测
公开(公告)号：WO2012173745A1
公开(公告)日：2012-12-20
申请号：PCT/US2012/038841
申请日：2012-05-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION , SU, Guan-Ming , QU, Sheng , HULYALKAR, Samir N.
发明人： SU, Guan-Ming , QU, Sheng , HULYALKAR, Samir N.
IPC分类号： H04N7/26
CPC分类号： H04N19/105 , H04N19/176 , H04N19/187 , H04N19/30 , H04N19/46 , H04N19/50 , H04N19/583 , H04N19/593
摘要： An input image is divided into non-overlapping regions. For each of the non-overlapping regions, first output data is predicted with a first prediction function, parameters related thereto and region-specific input image data. For each region with prior-predicted neighbor regions, a pixel border portion, adjacent to the neighbor region, is defined. For the pixels in the defined border portion, second output data is predicted with a second prediction function, parameters related thereto, input image data from the border portion of the current region, and input prediction parameter data from the neighbor region. The first output prediction data is fused with the second output data to predict a final set of output prediction values.
摘要翻译：输入图像被分成非重叠区域。对于每个非重叠区域，以第一预测函数，与其相关的参数和区域特定的输入图像数据来预测第一输出数据。对于具有先前预测的相邻区域的每个区域，定义与相邻区域相邻的像素边界部分。对于定义的边界部分中的像素，用第二预测函数预测第二输出数据，与其相关的参数，来自当前区域的边界部分的输入图像数据以及来自相邻区域的输入预测参数数据。第一输出预测数据与第二输出数据融合以预测最终的输出预测值组。

5. 发明申请

WO2015061335A2 GUIDED COLOR GRADING FOR EXTENDED DYNAMIC RANGE 审中-公开
标题翻译：用于扩展动态范围的指引颜色分级
公开(公告)号：WO2015061335A2
公开(公告)日：2015-04-30
申请号：PCT/US2014/061600
申请日：2014-10-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： XU, Ning , CHEN, Tao , CRENSHAW, James E. , HULYALKAR, Samir N.
IPC分类号： H04N1/60
CPC分类号： G06T5/007 , G06T5/008 , G06T5/50 , G06T2207/20208 , H04N1/40006 , H04N1/6052 , H04N5/57 , H04N9/67 , H04N21/4318
摘要： 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.
摘要翻译：公开了用于颜色分级的新颖方法和系统。用于视觉动态范围图像的颜色分级过程可以由与诸如标准动态范围图像的其它图像的颜色分级相关的信息来指导。

6. 发明申请

WO2015050857A1 TRANSMITTING DISPLAY MANAGEMENT METADATA OVER HDMI 审中-公开
标题翻译：在HDMI上传输显示管理元数据
公开(公告)号：WO2015050857A1
公开(公告)日：2015-04-09
申请号：PCT/US2014/058260
申请日：2014-09-30
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： QU, Sheng , HULYALKAR, Samir N.
IPC分类号： H04N9/64
CPC分类号： H04N9/67 , G09G5/006 , G09G5/04 , G09G5/10 , G09G2320/0271 , G09G2370/04 , G09G2370/12 , H04N5/2355 , H04N5/57 , H04N7/0806 , H04N7/0887 , H04N21/4318 , H04N21/43632 , H04N21/43635
摘要： In an embodiment, a source video signal comprising reference code values and mapping function parameters for one or more mapping functions to map the reference code values to device-specific pixel values. The reference code values and the mapping function parameters are combined into first video frames in a first video signal format. The mapping function parameters represent DM metadata carried in the first video frames. Second video frames in a second video signal format are generated based on the first video frames in the first video signal format and a mapping between the first video signal format and the second video signal format. The second video frames are sent to a video sink device through the video link in an encoded video signal of the second video signal format.
摘要翻译：在一个实施例中，源视频信号包括用于一个或多个映射函数的参考码值和映射函数参数，以将参考码值映射到特定于设备的像素值。将参考码值和映射函数参数以第一视频信号格式组合成第一视频帧。映射函数参数表示在第一视频帧中携带的DM元数据。基于第一视频信号格式的第一视频帧和第一视频信号格式与第二视频信号格式之间的映射生成第二视频信号格式的第二视频帧。第二视频帧通过第二视频信号格式的编码视频信号中的视频链路发送到视频宿设备。

7. 发明申请

WO2013049383A1 FRAME-COMPATIBLE FULL RESOLUTION STEREOSCOPIC 3D VIDEO DELIVERY WITH SYMMETRIC PICTURE RESOLUTION AND QUALITY 审中-公开
标题翻译：框架兼容全分辨率立体声3D视频传输与对称图像分辨率和质量
公开(公告)号：WO2013049383A1
公开(公告)日：2013-04-04
申请号：PCT/US2012/057610
申请日：2012-09-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： CHEN, Tao , GANAPATHY, Hariharan , HULYALKAR, Samir N. , LAKSHMINARAYANAN, Gopi , YIN, Peng , LU, Taoran , HUSAK, Walter J.
IPC分类号： H04N13/00
CPC分类号： H04N19/00072 , H04N13/106 , H04N13/161 , H04N13/194 , H04N19/119 , H04N19/597
摘要： 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.
摘要翻译：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。

8. 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。

9. 发明申请

WO2021127628A1 NOISE SYNTHESIS FOR DIGITAL IMAGES 审中-公开
公开(公告)号：WO2021127628A1
公开(公告)日：2021-06-24
申请号：PCT/US2020/066366
申请日：2020-12-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： KADU, Harshad , VISHWANATH, Bharath , SU, Guan-Ming , HULYALKAR, Samir N.
IPC分类号： G06T11/00
摘要： Apparatus and methods for providing software and hardware based solutions to the problem of synthesizing noise for a digital image. According to one aspect, a probability image is generated and noise blocks are randomly placed at locations in the probability image where the locations have probability values that are compared to a threshold criterion, creating a synthesized noise image. Embodiments include generating synthesized film grain images and synthesized digital camera noise images.

10. 发明申请

WO2016183239A1 METADATA FILTERING FOR DISPLAY MAPPING FOR HIGH DYNAMIC RANGE IMAGES 审中-公开
标题翻译：用于高动态范围图像的显示映射的元数据过滤
公开(公告)号：WO2016183239A1
公开(公告)日：2016-11-17
申请号：PCT/US2016/031925
申请日：2016-05-11
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： ATKINS, Robin , WARD, Gregory John , HULYALKAR, Samir N. , SU, Guan-Ming , QU, Sheng
IPC分类号： G09G3/36 , G06K9/00
CPC分类号： G09G3/3406 , G06K9/00711 , G09G3/34 , G09G3/36 , G09G2310/0235 , G09G2320/0233 , G09G2320/0247 , G09G2320/0271 , G09G2320/0276 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2320/066 , G09G2320/103 , G09G2340/16 , G09G2360/16 , G09G2370/04
摘要： Systems and methods are disclosed for filtering metadata to be used in display management. Given an input video stream and input metadata comprising at least one of minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the input metadata are filtered using a temporal filter to generate filtered metadata, wherein the filtering is based only on metadata for input frames in the same scene. Methods for temporal filtering based on an exponential moving average filter or a look-ahead sliding window filter are presented, including methods for scene-change detection using the input metadata.
摘要翻译：公开了用于过滤用于显示管理的元数据的系统和方法。给定输入视频流和包括视频流中的视频帧的最小，平均或最大亮度值中的至少一个的输入元数据，使用时间滤波器对输入元数据的功能的值进行滤波以生成滤波元数据，其中该过滤仅基于同一场景中输入帧的元数据。提出了基于指数移动平均滤波器或先行滑动窗口滤波器的时间滤波方法，包括使用输入元数据进行场景变化检测的方法。

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