公开(公告)号：US11468547B2

公开(公告)日：2022-10-11

申请号：US16461779

申请日：2017-12-07

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jaclyn Anne Pytlarz ,  Robin Atkins

IPC: G06T5/00

Abstract: Systems and methods for adjusting video processing curves are disclosed herein. In one embodiment a method for applying an adjustment to an original curve derived from a set of input image data is disclosed, comprising: receiving a set of input image data to be adjusted; calculating an original curve from the set of input image data; receiving an adjustment curve, the adjustment curve based upon a desired image parameter; and applying the adjustment curve to the original curve to produce a resulting curve. In another embodiment, a display management unit (DMU) comprising a processor is disclosed that, upon receiving a set of input image data, processes the original curve according to: calculating an original curve from the set of input image data; receiving an adjustment curve, the adjustment curve based upon a desired image parameter; and applying the adjustment curve to the original curve to produce a resulting curve.

公开(公告)号：US11158032B2

公开(公告)日：2021-10-26

申请号：US16495532

申请日：2018-03-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Robin Atkins ,  David Brooks ,  Jaclyn Anne Pytlarz ,  Jon S. McElvain ,  Robert Wanat

IPC: G06T5/00

Abstract: Input scene images are captured from an original scene. The input scene images may be represented in an input color space. The input scene images are converted into color-space-converted scene images in one of an LMS color space, an ICtCp color space, etc. Scene light levels represented in the color-space-converted scene images are mapped, based at least in part on an optical transfer function, to mapped light levels. A tone mapping is applied to the mapped light levels to generate corresponding display light levels to be represented in display images. The display images may be rendered on a target display.

公开(公告)号：US11025961B2

公开(公告)日：2021-06-01

申请号：US16532924

申请日：2019-08-06

Applicant: Dolby Laboratories Licensing Corporation

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

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

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.

公开(公告)号：US10560707B2

公开(公告)日：2020-02-11

申请号：US15532056

申请日：2016-03-24

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Robin Atkins ,  Jaclyn Anne Pytlarz

IPC: H04N19/33 ,  H04N19/132 ,  H04N19/167 ,  H04N19/169

Abstract: Downsampled video content is generated in a subsampling color space from linearized video content in the subsampling color space. The linearized video content represents a first spatial dimension, whereas the downsampled video content represents a second spatial dimension lower than the first spatial dimension. Opponent channel data is derived in a transmission color space from the downsampled video content. Output video content is generated from luminance data in the linearized video content and the opponent channel data in the transmission color space. The output video content may be decoded by a downstream recipient device to generate video content in an output color space.

公开(公告)号：US10432977B2

公开(公告)日：2019-10-01

申请号：US15749231

申请日：2016-08-03

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N19/46 ,  H04N1/60 ,  H04N19/87 ,  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.

公开(公告)号：US20240380928A1

公开(公告)日：2024-11-14

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: H04N19/87 ,  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.

公开(公告)号：US12120357B2

公开(公告)日：2024-10-15

申请号：US18630786

申请日：2024-04-09

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

CPC classification number: H04N19/87 ,  H04N1/6058 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98 ,  G09G2320/06 ,  G09G2340/06

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.

公开(公告)号：US20240155161A1

公开(公告)日：2024-05-09

申请号：US18405874

申请日：2024-01-05

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

CPC classification number: H04N19/87 ,  H04N1/6058 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98 ,  G09G2320/06 ,  G09G2340/06

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.

公开(公告)号：US20240073459A1

公开(公告)日：2024-02-29

申请号：US18385724

申请日：2023-10-31

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

CPC classification number: H04N19/87 ,  H04N1/6058 ,  H04N19/46 ,  H04N19/85 ,  H04N19/98 ,  G09G2320/06 ,  G09G2340/06

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.

公开(公告)号：US11869455B2

公开(公告)日：2024-01-09

申请号：US18010306

申请日：2021-06-30

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Elizabeth G. Pieri ,  Jaclyn Anne Pytlarz ,  Jake William Zuena

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G2360/144 ,  G09G2360/16

Abstract: Novel methods and systems for compensating for ambient light around displays are disclosed. A shift in the PQ curve applied to an image can compensate for sub-optimal ambient light conditions for a display, with the PQ shift being either an addition to a compensation value in PQ space followed by a subtraction of the compensation value in linear space, or an addition to the compensation value in linear space followed by a subtraction of the compensation value in PQ space. Further adjustments to the PQ curve can also be made to provide an improved image quality with respect to image luminance.