公开(公告)号：US20210195139A1

公开(公告)日：2021-06-24

申请号：US17127115

申请日：2020-12-18

Applicant: FONDATION B-COM

Inventor： Foteini Tania POULI ,  Cambodge BIST ,  Jean-Yves AUBIE

IPC: H04N7/01 ,  H04N9/77 ,  G06T5/00

Abstract: A method is described for converting an input image into an output image, the output image including an output luminance component made of elements. The method includes: obtaining an input luminance component from the input image; determining the output luminance component, the respective ranges of the output luminance component element values and input luminance component element values being of different range extension, the determining step including: —determining a first intermediate luminance component from the input luminance component and an exponent, —obtaining a mapping profile allowing for mapping a luminance component based on the input luminance component into the output luminance component, —determining a second intermediate luminance component from the input luminance component and the obtained mapping profile, —determining the output luminance component from the first and second intermediate luminance components; and converting the input image into the output image.