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Walter C Gish

age ~75

from Laguna Niguel, CA

Also known as:
  • Walter Gish
  • Walter Christian Gish
  • Walter Tr Gish
  • Wlater Gish
  • Walter Cish

Walter Gish Phones & Addresses

  • Laguna Niguel, CA
  • 6755 Pheasant Ln, Oak Park, CA 91377 • 8188893898
  • Calabasas, CA
  • 1891 Calle Borrego, Thousand Oaks, CA 91360
  • Newbury Park, CA
  • Centennial, CO
  • Malibu, CA
  • 6755 Pheasant Ln, Oak Park, CA 91377 • 8057054620

Work

  • Position:
    Administrative Support Occupations, Including Clerical Occupations

Education

  • Degree:
    Bachelor's degree or higher

Us Patents

  • Adaptive Motion Estimation

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  • US Patent:
    8457208, Jun 4, 2013
  • Filed:
    Dec 19, 2008
  • Appl. No.:
    12/746834
  • Inventors:
    Walter Gish - Oak Park CA,
    Christopher Vogt - Laguna Niguel CA,
  • Assignee:
    Dolby Laboratories Licensing Corporation - San Francisco CA
  • International Classification:
    H04N 7/36
  • US Classification:
    37524016, 37524015
  • Abstract:
    Optimal error metric function for motion estimation is determined and used for video coding and/or video processing of images. To do so, an initial motion estimation using an initial error metric function can be performed. This can produce motion prediction errors. If the initial error metric function is not the optimal error function, then a final motion estimation is performed using a selected optimal error metric function. In some embodiments, a shape of error distribution can be used to determine the optimal error metric function. Some example systems or devices for this motion estimation can include systems or devices for compression, temporal interpolation, and/or super-resolution processing.
  • Quantization Control For Variable Bit Depth

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  • US Patent:
    8548047, Oct 1, 2013
  • Filed:
    Aug 2, 2012
  • Appl. No.:
    13/565278
  • Inventors:
    Walter C. Gish - Oak Park CA,
    Christopher J. Vogt - Laguna Niguel CA,
  • Assignee:
    Dolby Laboratories Licensing Corporation - San Francisco CA
  • International Classification:
    H04N 7/12
    H04N 11/02
    H04N 11/04
  • US Classification:
    37524003, 37524001, 37524002, 37524026
  • Abstract:
    The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i. e. , the same QP).
  • Quantization Control For Variable Bit Depth

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  • US Patent:
    8045614, Oct 25, 2011
  • Filed:
    May 11, 2005
  • Appl. No.:
    11/128125
  • Inventors:
    Walter Christian Gish - Oak Park CA,
    Christopher J. Vogt - Omaha CA,
  • Assignee:
    Dolby Laboratories Licensing Corporation - San Francisco CA
  • International Classification:
    H04N 7/12
  • US Classification:
    37524003, 37524001, 37524002, 37524004, 37524005, 37524025, 37524026
  • Abstract:
    The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSof the quantization parameter QP, which function QShas been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth—a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i. e. , the same QP).
  • Unbiased Rounding For Video Compression

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  • US Patent:
    20080075166, Mar 27, 2008
  • Filed:
    Jul 12, 2005
  • Appl. No.:
    11/632365
  • Inventors:
    Walter Gish - Oak Park CA,
    Hyung-Suk Kim - Glendale CA,
  • Assignee:
    Dolby Laboratories Licensing Corporation - San Francisco CA
  • International Classification:
    H04N 7/50
  • US Classification:
    375240130, 375240120, 375E07211
  • Abstract:
    Unbiased rounding of unsigned data is employed in the decoding or the encoding and decoding of digital bitstreams representing data-video when the video is encoded at a first bit depth and is decoded at a second bit depth, lower than the first bit depth. The unbiased rounding may be employed in processing that employs a prediction loop. When the data-compressed video is represented in frames, the unbiased rounding may be of inter-frame and/or intra-frame data.
  • Compatible Compression Of High Dynamic Range, Visual Dynamic Range, And Wide Color Gamut Video

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  • US Patent:
    20110194618, Aug 11, 2011
  • Filed:
    Apr 21, 2011
  • Appl. No.:
    13/091311
  • Inventors:
    Walter Gish - Oak Park CA,
    Zhen Li - Cupertino CA,
    Christopher Vogt - Laguna Niguel CA,
  • Assignee:
    DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA
  • International Classification:
    H04N 7/26
  • US Classification:
    37524025, 375E07027
  • 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.
  • Quantization Control For Variable Bit Depth

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  • US Patent:
    20120008678, Jan 12, 2012
  • Filed:
    Aug 24, 2011
  • Appl. No.:
    13/216836
  • Inventors:
    Walter Christian Gish - Oak Park CA,
    Christopher J. Vogt - Laguna Niguel CA,
  • Assignee:
    DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA
  • International Classification:
    H04N 7/26
  • US Classification:
    37524003, 375E07139
  • Abstract:
    The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP).
  • Drift-Free, Backwards Compatible, Layered Vdr Coding

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  • US Patent:
    20120314773, Dec 13, 2012
  • Filed:
    May 23, 2012
  • Appl. No.:
    13/478695
  • Inventors:
    WALTER C. GISH - OAK PARK CA,
    SAMIR HULYALKAR - LOS GATOS CA,
  • Assignee:
    DOLBY LABORATORIES LICENSING CORPORATION - SAN FRANCISCO CA
  • International Classification:
    H04N 7/30
    H04N 7/50
  • US Classification:
    37524016, 3752402, 375E07226, 375E07211
  • Abstract:
    A visual dynamic range (VDR) signal and a standard dynamic range (SDR) signal are received. A first (e.g., MPEG-2) encoder encodes a base layer (BL) signal. A second encoder encodes an enhancement layer (EL). The EL signal represents information with which the VDR signal may be reconstructed, e.g., using the BL and the EL signals. The first encoder encodes the SDR signal with inverse discrete cosine transform (IDCT) coefficients that have a fixed precision, e.g., which represent fixed-point approximations of transform coefficients that may have arbitrary precisions. The BL signal is encoded in a stream that conforms with an Advanced Television Standards Committee (ATSC) standard. The EL is encoded in a stream that conforms with an ATSC enhanced vestigial sideband (E-VSB) standard. The BL and EL signals are combined; e.g., multiplexed, and transmitted together.
  • Quality Assessment Of Images With Extended Dynamic Range

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  • US Patent:
    20130004074, Jan 3, 2013
  • Filed:
    Jun 28, 2012
  • Appl. No.:
    13/536785
  • Inventors:
    Walter C. Gish - Oak Park CA,
  • Assignee:
    DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA
  • International Classification:
    G06K 9/68
    G06K 9/34
  • US Classification:
    382173, 382218
  • 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.

Resumes

Walter Gish Photo 1

Principal Member, Technical Staff At Dolby Laboratories

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Position:
Principal Member, Technical Staff at Dolby Laboratories
Location:
Greater Los Angeles Area
Industry:
Consumer Electronics
Work:
Dolby Laboratories since Apr 2003
Principal Member, Technical Staff
Walter Gish Photo 2

Principal Member, Technical Staff At Dolby Laboratories

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Location:
Greater Los Angeles Area
Industry:
Consumer Electronics
Experience:
Dolby Laboratories (Public Company; DLB; Consumer Electronics industry): Principal Member, Technical Staff,  (April 2003-Present) 

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