中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

49 records (took 0.022 seconds)

    SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS
    1.
    发明申请
    SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS 有权

    公开(公告)号：US20250097480A1

    公开(公告)日：2025-03-20

    申请号：US18961211

    申请日：2024-11-26

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Jaclyn Anne Pytlarz

    IPC: H04N19/87 ,  H04N1/60 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98

    Abstract: In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

    Tone curve mapping for high dynamic range images
    3.
    发明授权
    Tone curve mapping for high dynamic range images 有权

    公开(公告)号：US10600166B2

    公开(公告)日：2020-03-24

    申请号：US16486392

    申请日：2018-02-12

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Jaclyn Anne Pytlarz ,  Robin Atkins

    IPC: G06T5/00

    Abstract: Methods for mapping an image from a first dynamic range to a second dynamic range are presented. The mapping is based on a function that includes two spline polynomials determined using three anchor points and three slopes. The first anchor N point is determined using the black point levels of the input and target output, the second anchor point is determined using the white point levels of the input and target output, and the third anchor point is determined using mid-tones information data for the input and target output. The mid-tones level of the target output is computed adaptively based on an ideal one-to-one mapping and by preserving input contrast in both the blacks and the highlights. An example tone-mapping transfer function based on third order (cubic) Hermite splines is presented.

    ENCODING AND DECODING MULTIPLE-INTENT IMAGES AND VIDEO USING METADATA
    4.
    发明申请
    ENCODING AND DECODING MULTIPLE-INTENT IMAGES AND VIDEO USING METADATA 有权

    公开(公告)号：US20250054204A1

    公开(公告)日：2025-02-13

    申请号：US18696025

    申请日：2022-09-27

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Robin Atkins ,  Jaclyn Anne Pytlarz ,  Robert Wanat ,  Jake William Zuena

    IPC: G06T11/00 ,  H04N19/70

    Abstract: Systems and methods for encoding and decoding multiple-intent images and video using metadata. When encoding an image as a multiple-intent image, at least one appearance adjustment may be made to the image. Metadata characterizing the at least one appearance adjustment may be included in, or transmitted along with, the encoded multiple-intent image. When decoding a multiple-intent image, a system may obtain a selection of a desired rendering intent and, based on that selection, either render the multiple-intent image with the applied appearance adjustments or may use the metadata to invert the appearance adjustments and recover the image pre-appearance adjustments.

    SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS
    5.
    发明申请
    SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS 有权

    公开(公告)号：US20250024086A1

    公开(公告)日：2025-01-16

    申请号：US18899400

    申请日：2024-09-27

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Jaclyn Anne Pytlarz

    IPC: H04N19/87 ,  H04N1/60 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98

    Abstract: In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

    Signal reshaping for high dynamic range signals
    6.
    发明授权
    Signal reshaping for high dynamic range signals 有权

    公开(公告)号：US12167048B2

    公开(公告)日：2024-12-10

    申请号：US18780325

    申请日：2024-07-22

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Jaclyn Anne Pytlarz

    IPC: H04N19/82 ,  H04N1/60 ,  H04N19/46 ,  H04N19/85 ,  H04N19/87 ,  H04N19/98

    Abstract: In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.

    Image-dependent contrast and brightness control for HDR displays
    10.
    发明授权
    Image-dependent contrast and brightness control for HDR displays 有权

    公开(公告)号：US11935492B2

    公开(公告)日：2024-03-19

    申请号：US17920115

    申请日：2021-04-27

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Jaclyn Anne Pytlarz

    IPC: G09G3/34

    CPC classification number: G09G3/3406 ,  G09G2320/0238 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2360/16

    Abstract: Methods and systems to adjust differently brightness and contrast for dark and bright pictures on a display are provided. Given a tone-mapping curve mapping an input dynamic range to a display comprising a minimum and maximum display luminance value, the maximum display luminance value is lowered to an adjusted luminance value according to user defined parameters. The input dynamic range is tone-mapped to the display dynamic range using the adjusted luminance value. For brightness control, the tone mapped image is stretched linearly back to the maximum display luminance value. For contrast control, a gamma or power EOTF of the display is adjusted according to the adjusted luminance. For displays with global backlight control, the global backlight is adjusted only when contrast is adjusted.

Patent Agency Ranking