公开(公告)号：US11776099B2

公开(公告)日：2023-10-03

申请号：US17344843

申请日：2021-06-10

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Robert Wanat ,  Robin Atkins ,  Anustup Kumar Atanu Choudhury ,  Scott Daly ,  Jaclyn Anne Pytlarz

IPC: G06T7/00 ,  G06T5/00 ,  G06T5/50

CPC classification number: G06T7/0002 ,  G06T5/002 ,  G06T5/50 ,  G06T7/97 ,  G06T2207/10024 ,  G06T2207/20024 ,  G06T2207/20224 ,  G06T2207/30168

Abstract: Methods and systems for generating an image quality metric are described. A reference and a test image are first converted to the ITP color space. After calculating difference images ΔI, ΔT, and ΔP, using the color channels of the two images, the difference images are convolved with low pass filters, one for the I channel and one for the chroma channels (I or P). The image quality metric is computed as a function of the sum of squares of filtered ΔI, ΔT, and ΔP values. The chroma low-pass filter is designed to maximize matching the image quality metric with subjective results.

公开(公告)号：US11600244B2

公开(公告)日：2023-03-07

申请号：US17892473

申请日：2022-08-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jon Scott Miller ,  Scott Daly ,  Mahdi Nezamabadi ,  Robin Atkins

IPC: G06K9/00 ,  G09G5/10 ,  H04N19/40 ,  G06F3/14 ,  G09G5/00 ,  G09G5/06

Abstract: A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.

公开(公告)号：US20230007343A1

公开(公告)日：2023-01-05

申请号：US17930357

申请日：2022-09-07

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Scott Daly ,  Poppy Anne Carrie Crum ,  Evan David Gitterman ,  Shane Mario Ruggieri

IPC: H04N21/442 ,  H04N21/422 ,  H04N21/4223 ,  H04N21/84 ,  H04N21/41

Abstract: Creative intent input describing emotion expectations and narrative information relating to media content is received. Expected physiologically observable states relating to the media content are generated based on the creative intent input. An audiovisual content signal with the media content and media metadata comprising the physiologically observable states is provided to a playback apparatus. The audiovisual content signal causes the playback device to use physiological monitoring signals to determine, with respect to a viewer, assessed physiologically observable states relating to the media content and generate, based on the expected physiologically observable states and the assessed physiologically observable states, modified media content to be rendered to the viewer.

公开(公告)号：US11019302B2

公开(公告)日：2021-05-25

申请号：US16650821

申请日：2018-09-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jaclyn Anne Pytlarz ,  Robin Atkins ,  Elizabeth G. Pieri ,  Alexandre Chapiro ,  Scott Daly

IPC: H04N7/01

Abstract: Methods for encoding and decoding high-dynamic range signals are presented. The signals are encoded in a high frame rate and are accompanied by frame-rate conversion metadata defining a preferred set of frame-rate down-conversion parameters, which are determined according to the maximum luminance of a target display, display playback priority modes, or judder control modes. A decoder uses the frame-rate conversion metadata to apply frame-rate down-conversion to the input high-frame-rate signal according to at least the maximum luminance of the target display and/or the characteristics of the signal itself. Frame-based and pixel-based frame-rate conversions, and judder models for judder control via metadata are also discussed.

公开(公告)号：US10062333B2

公开(公告)日：2018-08-28

申请号：US15286126

申请日：2016-10-05

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Suzanne Farrell ,  Scott Daly ,  Robin Atkins ,  Timo Kunkel ,  Kimball Darr Thurston, III

IPC: G09G5/10 ,  G09G3/34 ,  G06K9/00

CPC classification number: 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

Abstract: Systems and methods are disclosed for dynamically adjusting the backlight of a display during video playback or for generating filtered video metadata. Given an input video stream and associated metadata values of 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 to generate a filtered output value for each frame. At least one filtering coefficient of the temporal filter is adapted based on a logistic function controlled by slope and sensitivity values. The instantaneous dynamic range of a target display is determined based on the filtered metadata values and the minimum and maximum brightness values of the display.

公开(公告)号：US09866813B2

公开(公告)日：2018-01-09

申请号：US14309965

申请日：2014-06-20

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Gregory John Ward ,  Timo Kunkel ,  Scott Daly

IPC: H04N13/02 ,  H04N13/00

CPC classification number: H04N13/111

Abstract: Representation and coding of multi-view images are carried out through tapestry encoding. A tapestry comprises information on a tapestry image, a left-shift displacement map and a right-shift displacement map. Perspective images of a scene can be generated from the tapestry and the displacement maps. The tapestry image is generated from a leftmost view image, a rightmost view image, a disparity map and an occlusion map.

公开(公告)号：US20160182917A1

公开(公告)日：2016-06-23

申请号：US14964862

申请日：2015-12-10

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Guan-Ming Su ,  Gregory John Ward ,  Timo Kunkel ,  Scott Daly ,  Samir N. Hulyalkar

IPC: H04N19/597 ,  H04N13/00 ,  H04N19/17

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/17 ,  H04N19/30 ,  H04N2213/005

Abstract: Representation and coding of multi-view images using tapestry encoding are described for standard and enhanced dynamic ranges compatibility. A tapestry comprises information on a tapestry image, a left-shift displacement map and a right-shift displacement map. Perspective images of a scene can be generated from the tapestry and the displacement maps. Different methods for achieving compatibility are described.

Abstract translation: 描述使用挂毯编码的多视图图像的表示和编码，用于标准和增强的动态范围兼容性。 挂毯包括关于挂毯图像，左移位移图和右移位移图的信息。 可以从挂毯和位移图生成场景的透视图像。 描述了实现兼容性的不同方法。

公开(公告)号：US20150339990A1

公开(公告)日：2015-11-26

申请号：US14816179

申请日：2015-08-03

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Eric Kozak ,  Scott Daly

IPC: G09G3/36 ,  F21V13/02 ,  H04N9/31

CPC classification number: G09G3/3607 ,  F21V13/02 ,  G03B21/2033 ,  G03B33/06 ,  G09G3/001 ,  G09G3/34 ,  G09G2300/0452 ,  G09G2310/0235 ,  H04N9/3158 ,  H04N9/3164 ,  H04N9/3182

Abstract: Several embodiments of display systems that use narrowband emitters are disclosed herein. In one embodiment, a display system comprises, for at least one primary color, a plurality of narrowband emitters distributed around the primary color point. The plurality of narrowband emitters provides a more regular power vs. spectral distribution in a desired band of frequencies.

Abstract translation: 本文公开了使用窄带发射器的显示系统的几个实施例。 在一个实施例中，对于至少一个原色，显示系统包括分布在原色点周围的多个窄带发射器。 多个窄带发射器在期望的频带中提供更规则的功率对频谱分布。

公开(公告)号：US09077994B2

公开(公告)日：2015-07-07

申请号：US14363129

申请日：2012-12-06

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jon Scott Miller ,  Scott Daly ,  Mahdi Nezamabadi ,  Robin Atkins

IPC: G06K9/36 ,  H04N19/40 ,  G06F3/14 ,  G09G5/00

CPC classification number: G09G5/10 ,  G06F3/14 ,  G09G5/005 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/04 ,  G09G2340/0428 ,  G09G2340/0435 ,  G09G2340/06 ,  G09G2340/14 ,  G09G2370/04 ,  G09G2370/08 ,  G09G2380/08 ,  H04N19/40

Abstract: A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.

Abstract translation: 手持成像设备具有被配置为接收参考编码图像数据的数据接收器。 数据包括由外部编码系统编码的参考码值。 参考码值表示参考灰度级，其使用基于在不同光级别对空间频率适应的人类视觉的感知非线性的参考灰度显示功能来选择。 成像设备还具有数据转换器，其被配置为访问成像设备的参考代码值和设备特定代码值之间的代码映射。 设备特定的代码值被配置为产生特定于成像设备的灰度级。 基于代码映射，数据转换器被配置为将参考编码图像数据转码为特定于设备的图像数据，其由特定于设备的代码值进行编码。

公开(公告)号：US08873877B2

公开(公告)日：2014-10-28

申请号：US14353090

申请日：2012-11-01

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Guan-Ming Su ,  Sheng Qu ,  Scott Daly

IPC: G06K9/36 ,  G06T9/00

CPC classification number: G06T9/00 ,  H04N19/124 ,  H04N19/154 ,  H04N19/176 ,  H04N19/179 ,  H04N19/182 ,  H04N19/192 ,  H04N19/46 ,  H04N19/86 ,  H04N19/98

Abstract: An encoder receives a sequence of images in extended or visual dynamic range (VDR). For each image, a dynamic range compression function and associated parameters are selected to convert the input image into a second image with a lower dynamic range. Using the input image and the second image, a residual image is computed. The input VDR image sequence is coded using a layered codec that uses the second image as a base layer and a residual image that is derived from the input and second images as one or more residual layers. Using the residual image, a false contour detection method (FCD) estimates the number of potential perceptually visible false contours in the decoded VDR image and iteratively adjusts the dynamic range compression parameters to prevent or reduce the number of false contours. Examples that use a uniform dynamic range compression function are also described.

Abstract translation: 编码器在扩展或视觉动态范围（VDR）中接收一系列图像。 对于每个图像，选择动态范围压缩函数和相关联的参数以将输入图像转换为具有较低动态范围的第二图像。 使用输入图像和第二图像，计算残差图像。 输入VDR图像序列使用分层编解码器进行编码，其使用第二图像作为基本层，并且从输入和第二图像导出的残差图像作为一个或多个残余层。 使用残差图像，假轮廓检测方法（FCD）估计解码的VDR图像中潜在的感知可见假轮廓的数量，并且迭代地调整动态范围压缩参数以防止或减少假轮廓的数量。 还描述了使用均匀动态范围压缩功能的示例。