Patents by Inventor Walter Gish

Walter Gish 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: 10587897
    Abstract: Coding syntaxes in compliance with same or different VDR specifications may be signaled by upstream coding devices such as VDR encoders to downstream coding devices such as VDR decoders in a common vehicle in the form of RPU data units. VDR coding operations and operational parameters may be specified as sequence level, frame level, or partition level syntax elements in a coding syntax. Syntax elements in a coding syntax may be coded directly in one or more current RPU data units under a current RPU ID, predicted from other partitions/segments/ranges previously sent with the same current RPU ID, or predicted from other frame level or sequence level syntax elements previously sent with a previous RPU ID. A downstream device may perform decoding operations on multi-layered input image data based on received coding syntaxes to construct VDR images.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 10, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sheng Qu, Peng Yin, Yan Ye, Yuwen He, Walter Gish, Guan-Ming Su, Yufei Yuan, Samir Hulyalkar
  • Patent number: 10158835
    Abstract: Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: December 18, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Walter Gish, Zhen Li, Donald Pian, Christopher J. Vogt, Hyung-Suk Kim, David Ruhoff
  • Patent number: 10136162
    Abstract: Coding syntaxes in compliance with same or different VDR specifications may be signaled by upstream coding devices such as VDR encoders to downstream coding devices such as VDR decoders in a common vehicle in the form of RPU data units. VDR coding operations and operational parameters may be specified as sequence level, frame level, or partition level syntax elements in a coding syntax. Syntax elements in a coding syntax may be coded directly in one or more current RPU data units under a current RPU ID, predicted from other partitions/segments/ranges previously sent with the same current RPU ID, or predicted from other frame level or sequence level syntax elements previously sent with a previous RPU ID. A downstream device may perform decoding operations on multi-layered input image data based on received coding syntaxes to construct VDR images.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: November 20, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sheng Qu, Peng Yin, Yan Ye, Yuwen He, Walter Gish, Guan-Ming Su, Yufei Yuan, Samir Hulyalkar
  • Patent number: 9942449
    Abstract: Novel methods and systems for image processing and gamut mapping are disclosed, where image parameters in a first color space are transformed into parameters in a second color space. In one example, the gamut mapping system processes the image parameters in a parametrized space using substantially rectangular spectral functions. In another example, the gamut mapping system processes the image parameters in a parametrized space using smooth spectral functions. The smooth spectral functions may include a linear combination of functions, including at least a cosine square function. Image parameters may include an intensity parameter, a center wavelength parameter, and a saturation parameter.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: April 10, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Walter Gish
  • Publication number: 20170164008
    Abstract: Coding syntaxes in compliance with same or different VDR specifications may be signaled by upstream coding devices such as VDR encoders to downstream coding devices such as VDR decoders in a common vehicle in the form of RPU data units. VDR coding operations and operational parameters may be specified as sequence level, frame level, or partition level syntax elements in a coding syntax. Syntax elements in a coding syntax may be coded directly in one or more current RPU data units under a current RPU ID, predicted from other partitions/segments/ranges previously sent with the same current RPU ID, or predicted from other frame level or sequence level syntax elements previously sent with a previous RPU ID. A downstream device may perform decoding operations on multi-layered input image data based on received coding syntaxes to construct VDR images.
    Type: Application
    Filed: February 16, 2017
    Publication date: June 8, 2017
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Sheng QU, Peng YIN, Yan YE, Yuwen HE, Walter GISH, Guan-Ming SU, Yufei YUAN, Samir HULYALKAR
  • Publication number: 20160212304
    Abstract: Novel methods and systems for image processing and gamut mapping are disclosed, where image parameters in a first color space are transformed into parameters in a second color space. In one example, the gamut mapping system processes the image parameters in a parametrized space using substantially rectangular spectral functions. In another example, the gamut mapping system processes the image parameters in a parametrized space using smooth spectral functions. The smooth spectral functions may include a linear combination of functions, including at least a cosine square function. Image parameters may include an intensity parameter, a center wavelength parameter, and a saturation parameter.
    Type: Application
    Filed: August 20, 2014
    Publication date: July 21, 2016
    Applicant: Dolby Laboratories Licensing Corporation
    Inventor: Walter GISH
  • Publication number: 20160134853
    Abstract: Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.
    Type: Application
    Filed: January 19, 2016
    Publication date: May 12, 2016
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Walter GISH, Zhen LI, Donald PIAN, Christopher J. VOGT, Hyung-Suk KIM, David RUHOFF
  • Patent number: 9264681
    Abstract: Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: February 16, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Walter Gish, Zhen Li, Donald Pian, Christopher Vogt, Hyung-Suk Kim, David Ruhoff
  • Patent number: 8982963
    Abstract: A first image stream has a first dynamic range and a first color space. First and the second image streams are received in a layered codec. The second image stream has a second dynamic range, which is higher than the first dynamic range. The first image stream is in the codec's base layer; the second image stream is in its enhancement layer. The first image stream is encoded to obtain an encoded image stream, which is decoded to obtain a decoded image stream. The decoded image stream is converted from the first non-linear or linear color space to a second, different color space to obtain a color converted image stream. A higher dynamic range image representation of the color converted image stream is generated to obtain a transformed image stream. Inverse tone mapping parameters are generated based on the transformed image stream and the second image stream.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 17, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Walter Gish, Zhen Li, Christopher Vogt
  • Patent number: 8947549
    Abstract: A substantially rectangular spectral representation is synthesized, which is adapted to produce image capture device sensor outputs if applied to an image capture device. The synthesized substantially rectangular spectral representation can be utilized in generating output color values of an output color space from image capture device sensor outputs, where the image capture device sensor outputs correspond to an image captured by an image capture device. The generated output color values correspond to colors perceived by the human visual system for the same image as that captured by the image capture device. Image capture device gamut is also determined.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: February 3, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Walter Gish, David Ruhoff, Jon S. McElvain
  • Patent number: 8929654
    Abstract: A substantially rectangular spectral representation is synthesized, which is adapted to produce either (a) image capture device sensor outputs if applied to an image capture device or (b) color values if applied to corresponding analysis functions. Spectral expansion, which can be used in various image processing methods, is achieved with the synthesized spectral representation.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 6, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Walter Gish, Christopher J. Vogt, David Ruhoff, Jon S. McElvain
  • Publication number: 20140348426
    Abstract: A substantially rectangular spectral representation is synthesized, which is adapted to produce either (a) image capture device sensor outputs if applied to an image capture device or (b) color values if applied to corresponding analysis functions. Spectral expansion, which can be used in various image processing methods, is achieved with the synthesized spectral representation.
    Type: Application
    Filed: December 20, 2012
    Publication date: November 27, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Walter Gish, Christopher J. Vogt, David Ruhoff, Jon S. McElvain
  • Publication number: 20140341273
    Abstract: An inter-layer reference picture is generated either by considering an inverse mapped signal from a base layer, a temporal signal from an enhancement layer, or a combination of both.
    Type: Application
    Filed: December 20, 2012
    Publication date: November 20, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Yan Ye, Peng Yin, Yuwen He, Walter Gish
  • Publication number: 20140341305
    Abstract: Coding syntaxes in compliance with same or different VDR specifications may be signaled by upstream coding devices such as VDR encoders to downstream coding devices such as VDR decoders in a common vehicle in the form of RPU data units. VDR coding operations and operational parameters may be specified as sequence level, frame level, or partition level syntax elements in a coding syntax. Syntax elements in a coding syntax may be coded directly in one or more current RPU data units under a current RPU ID, predicted from other partitions/segments/ranges previously sent with the same current RPU ID, or predicted from other frame level or sequence level syntax elements previously sent with a previous RPU ID. A downstream device may perform decoding operations on multi-layered input image data based on received coding syntaxes to construct VDR images.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 20, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Sheng QU, Peng YIN, Yan YE, Yuwen HE, Walter GISH, Guan-Ming SU, Yufei YUAN, Samir HULYALKAR
  • Publication number: 20140300752
    Abstract: A substantially rectangular spectral representation is synthesized, which is adapted to produce image capture device sensor outputs if applied to an image capture device. The synthesized substantially rectangular spectral representation can be utilized in generating output color values of an output color space from image capture device sensor outputs, where the image capture device sensor outputs correspond to an image captured by an image capture device. The generated output color values correspond to colors perceived by the human visual system for the same image as that captured by the image capture device. Image capture device gamut is also determined.
    Type: Application
    Filed: December 20, 2012
    Publication date: October 9, 2014
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Walter Gish, David Ruhoff, Jon S. McElvain
  • Patent number: 8837825
    Abstract: Inter-color image prediction is based on color grading modeling. Prediction is applied to the efficient coding of images and video signals of high dynamic range. Prediction models may include a color transformation matrix that models hue and saturation color changes and a non-linear function modeling color correction changes. Under the assumption that the color grading process uses a slope, offset, and power (SOP) operations, an example non linear prediction model is presented.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: September 16, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Hubert Koepfer, Yufei Yuan, Samir Hulyalkar, Walter Gish
  • Publication number: 20140185930
    Abstract: Inter-color image prediction is based on color grading modeling. Prediction is applied to the efficient coding of images and video signals of high dynamic range. Prediction models may include a color transformation matrix that models hue and saturation color changes and a non-linear function modeling color correction changes. Under the assumption that the color grading process uses a slope, offset, and power (SOP) operations, an example non linear prediction model is presented.
    Type: Application
    Filed: March 5, 2014
    Publication date: July 3, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Guan-Ming Su, Sheng Qu, Hubert Koepfer, Yufei Yuan, Samir Hulyalkar, Walter Gish
  • Patent number: 8743291
    Abstract: A first video signal is accessed, and represented in a first color space with a first color gamut, related to a first dynamic range. A second video signal is accessed, and represented in a second color space of a second color gamut, related to a second dynamic range. The first accessed video signal is converted to a video signal represented in the second color space. At least two color-related components of the converted video signal are mapped over the second dynamic range. The mapped video signal and the second accessed video signal are processed. Based on the processing, a difference is measured between the processed first and second video signals. A visual quality characteristic relates to a magnitude of the measured difference between the processed first and second video signals. The visual quality characteristic is assessed based, at least in part, on the measurement of the difference.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: June 3, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Zhen Li, Walter Gish
  • Patent number: 8731287
    Abstract: Inter-color image prediction is based on color grading modeling. Prediction is applied to the efficient coding of images and video signals of high dynamic range. Prediction models may include a color transformation matrix that models hue and saturation color changes and a non-linear function modeling color correction changes. Under the assumption that the color grading process uses a slope, offset, and power (SOP) operations, an example non linear prediction model is presented.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: May 20, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Hubert Koepfer, Yufei Yuan, Samir Hulyalkar, Walter Gish
  • Patent number: 8660352
    Abstract: Given a set of two images with visual dynamic range (VDR), wherein the second image is an approximation of the first image, a standard dynamic range (SDR) equivalent peak value (EPV) is computed, wherein the EPV is smaller than the maximum pixel value of the first VDR image. An image assessment metric for the second image is computed using the EPV and an error measurement between the first image and the second image. The EPV may be computed using image statistics (e.g., mean and standard deviation) derived from the first VDR image or, if available, from its corresponding SDR image.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: February 25, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Walter Gish