Patents by Inventor Peter W. Longhurst

Peter W. Longhurst has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11917171
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Grant
    Filed: July 7, 2023
    Date of Patent: February 27, 2024
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Publication number: 20230353762
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 2, 2023
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Patent number: 11736703
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: August 22, 2023
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Publication number: 20220086467
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Application
    Filed: June 21, 2021
    Publication date: March 17, 2022
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Patent number: 11218709
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: January 4, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Publication number: 20190289305
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 19, 2019
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Publication number: 20180262767
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 13, 2018
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Patent number: 9712796
    Abstract: Methods and systems for color grading video content are presented. A component (e.g. a frame, a shot and/or a scene) of the video content is designated to be a master component and one or more other components of the video content are designated to be slave components, each slave component associated with the master component. A master component color grading operation is performed to the master component. For each one of the slave components, the master component color grading operation is performed to the slave component and a slave color grading operation that is specific to the one of the slave components is also performed. Metadata, which form part of the video content, are created to provide indicators on to whether components of the video are designated as master or slave components.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: July 18, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, William Brent Wilson
  • Patent number: 9532022
    Abstract: A method for color grading input video data for display on a target display comprises obtaining target display metadata indicative of a capability of the target display, obtaining input video data metadata indicative of image characteristics of the input video data, automatically determining initial values for parameters of a parameterized sigmoidal transfer function, at least one of the initial values based at least in part on at least one of the target display metadata and the input video data metadata and mapping the input video data to color-graded video data according to the parameterized transfer function specified using the initial values.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: December 27, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, Neil W. Messmer, Steve Margerm, Robin Atkins
  • Patent number: 9275605
    Abstract: Image data is encoded for distribution in a lower bit-depth format. The image data has a range that is less than a maximum range and is mapped to the lower bit depth format using a mapping such that a ratio of a range of the lower bit depth representation to a maximum range of the lower bit depth representation is greater than a ratio of the range of the image data to a maximum range of the image data. Metadata characterizing the mapping is associated with lower bit depth representation. The metadata may be used downstream to reverse the mapping so that tonal detail is better reproduced.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: March 1, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, Lewis Johnson, Neil W. Messmer
  • Patent number: 9191682
    Abstract: Image decoders encoders and transcoders incorporate gamut transformations. The gamut transformations alter tone, color or other characteristics of image data. The gamut transformations may comprise interpolation, extrapolation, direct mapping of pixel values and/or modification of an expansion function. Gamut transformations may be applied to generate image output (video or still) adapted for display on a target display.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: November 17, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Steve Margerm, Peter W. Longhurst, Robin Atkins, Anders Ballestad
  • Publication number: 20150281707
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Application
    Filed: June 16, 2015
    Publication date: October 1, 2015
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Patent number: 9111330
    Abstract: Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: August 18, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Neil W. Messmer, Robin Atkins, Steve Margerm, Peter W. Longhurst
  • Publication number: 20150215594
    Abstract: Methods and systems for color grading video content are presented. A component (e.g. a frame, a shot and/or a scene) of the video content is designated to be a master component and one or more other components of the video content are designated to be slave components, each slave component associated with the master component. A master component color grading operation is performed to the master component. For each one of the slave components, the master component color grading operation is performed to the slave component and a slave color grading operation that is specific to the one of the slave components is also performed. Metadata, which form part of the video content, are created to provide indicators on to whether components of the video are designated as master or slave components.
    Type: Application
    Filed: April 8, 2015
    Publication date: July 30, 2015
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, William Brent Wilson
  • Publication number: 20150195499
    Abstract: A method for color grading input video data for display on a target display comprises obtaining target display metadata indicative of a capability of the target display, obtaining input video data metadata indicative of image characteristics of the input video data, automatically determining initial values for parameters of a parameterized sigmoidal transfer function, at least one of the initial values based at least in part on at least one of the target display metadata and the input video data metadata and mapping the input video data to color-graded video data according to the parameterized transfer function specified using the initial values.
    Type: Application
    Filed: March 19, 2015
    Publication date: July 9, 2015
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. LONGHURST, Neil W. MESSMER, Steve MARGERM, Robin ATKINS
  • Patent number: 9035965
    Abstract: Methods and systems for color grading video content are presented. A component (e.g. a frame, a shot and/or a scene) of the video content is designated to be a master component and one or more other components of the video content are designated to be slave components, each slave component associated with the master component. A master component color grading operation is performed to the master component. For each one of the slave components, the master component color grading operation is performed to the slave component and a slave color grading operation that is specific to the one of the slave components is also performed. Metadata, which form part of the video content, are created to provide indicators on to whether components of the video are designated as master or slave components.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: May 19, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, Brent Wilson
  • Patent number: 9024961
    Abstract: A method for color grading input video data for display on a target display comprises obtaining target display metadata indicative of a capability of the target display, obtaining input video data metadata indicative of image characteristics of the input video data, automatically determining initial values for parameters of a parameterized sigmoidal transfer function, at least one of the initial values based at least in part on at least one of the target display metadata and the input video data metadata and mapping the input video data to color-graded video data according to the parameterized transfer function specified using the initial values.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: May 5, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, Neil W. Messmer, Steve Margerm, Robin Atkins
  • Publication number: 20150085925
    Abstract: Image decoders encoders and transcoders incorporate gamut transformations. The gamut transformations alter tone, color or other characteristics of image data. The gamut transformations may comprise interpolation, extrapolation, direct mapping of pixel values and/or modification of an expansion function. Gamut transformations may be applied to generate image output (video or still) adapted for display on a target display.
    Type: Application
    Filed: December 5, 2014
    Publication date: March 26, 2015
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Steve Margerm, Peter W. Longhurst, Robin Atkins, Anders Ballestad
  • Patent number: 8934726
    Abstract: Image decoders encoders and transcoders incorporate gamut transformations. The gamut transformations alter tone, color or other characteristics of image data. The gamut transformations may comprise interpolation, extrapolation, direct mapping of pixel values and/or modification of an expansion function. Gamut transformations may be applied to generate image output (video or still) adapted for display on a target display.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: January 13, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Steve Margerm, Peter W. Longhurst, Robin Atkins, Anders Ballestad
  • Patent number: 8786585
    Abstract: In one embodiment the present invention includes a method that adjusts a display device according to a display environment. The method includes sensing the display environment of the display device and generating environment data that corresponds to the display environment. The environment data includes color data. The method further includes adjusting a color appearance model according to the color data, generating a control signal according to the color appearance model having been adjusted, and controlling a backlight of the display device according to the control signal. In this manner, a viewer perceives the images displayed by the display device in the manner intended by the content creator, because the adjustments to the color appearance model compensate for the viewer's physiological response to the display environment.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: July 22, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peter W. Longhurst, Eric Kozak