公开(公告)号：US20250061553A1

公开(公告)日：2025-02-20

申请号：US18720185

申请日：2021-12-15

Applicant: FONDATION B-COM

Inventor： Olivier WEPPE ,  Benoît LE LUDEC ,  Foteini Tania POULI

IPC: G06T5/90 ,  G06T3/40

Abstract: An electronic device for converting an input image having a first dynamic range into an output image having a second dynamic range comprises a computing unit and a converting unit, wherein: —the computing unit comprises a computing input physical interface and a computing output physical interface, —the converting unit comprises a converting input physical interface, a parameter input physical interface and a converting output physical interface, —the computing unit is configured to receive data representative of a first image via the computing input physical interface, —the converting unit is configured to receive data representative of a second image via the converting input physical interface, —the computing unit is configured to compute at least one statistical parameter characteristic of the first image, —the computing unit is configured to transmit the at least one statistical parameter characteristic of the first image via the computing output physical interface, —the converting unit is configured to receive entry data via the parameter input physical interface, —the converting unit is configured to convert the second image into at least one part of the output image based on the entry data.

公开(公告)号：US20240056603A1

公开(公告)日：2024-02-15

申请号：US18259064

申请日：2021-12-17

Applicant: FONDATION B-COM

Inventor： Benoît LE LUDEC ,  Patrick DUMÉNIL ,  Franck CHI

IPC: H04N19/59 ,  H04N19/117 ,  G06T7/11 ,  H04N19/154 ,  H04N19/172

CPC classification number: H04N19/59 ,  H04N19/117 ,  G06T7/11 ,  H04N19/154 ,  H04N19/172

Abstract: Disclosed is a method for encoding images of a video sequence that includes implementing the following steps: c) obtaining an initial configuration representative of structural characteristics of a display device and, for an image of the video sequence referred to as the input sub-sequence, d1) carrying out a first spatial sub-sampling operation on the elements of the image by using a filter oriented in a first direction and including a first set of values of sub-sampling factors, the latter being determined as a function of the initial configuration, then inserting the resulting image into an output sub-sequence, and e) encoding the images of the output sub-sequence.

公开(公告)号：US20230050498A1

公开(公告)日：2023-02-16

申请号：US17786091

申请日：2020-12-18

Applicant: FONDATION B-COM

Inventor： Foteini Tania POULI ,  Olivier WEPPE ,  Benoît LE LUDEC

IPC: G06T5/00

Abstract: The invention concerns a method for converting an input image comprising an input luminance component made of elements into an output image comprising an output luminance component made of elements, the respective ranges of the output luminance component values and input luminance component element values being of different range extension. the method comprises for the input image: computing a value of a general variable representative of at least two input luminance component element values; transforming each input luminance component element value into a corresponding output luminance component element value according to the computed general variable value; and converting the input image using the determined output luminance component element values. The transforming step uses a set of pre-determined output values organized into a 2D Look-Up-Table (2D LUT) comprising two input arrays indexing a set of chosen input luminance component values and a set of chosen general variable values respectively, each pre-determined output value matching a pair of values made of an indexed input luminance component value and an indexed general variable value, the input luminance component element value being transformed into the output luminance component element value using at least one predetermined output value.