Patents by Inventor Jean-Marie MOUREAUX

Jean-Marie MOUREAUX has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11838530
    Abstract: A method for concealing data in an image or a video stream inside a compression chain, being implemented by a computer and including a structuring and processing phase, during which at least one image is structured into blocks including coefficients, a phase of converting and quantifying blocks so as to generate converted and quantified coefficients, with entropic coding intended to code the converted and quantified coefficients. The method includes a step of concealing data, during which bits of the data are concealed by modifying converted and quantified coefficients located in a high frequency zone of at least some of the blocks that relate to the luminance component of the video stream and that are intra-coded. This modification is performed after the quantification but before the entropic coding.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: December 5, 2023
    Assignees: UNIVERSITE DE LORRAINE, UNIVERSITE DE STRASBOURG
    Inventors: Jean-Marie Moureaux, Amine Chaabouni, Yann Gaudeau
  • Publication number: 20220078464
    Abstract: A method for concealing data in an image or a video stream inside a compression chain, being implemented by a computer and including a structuring and processing phase, during which at least one image is structured into blocks including coefficients, a phase of converting and quantifying blocks so as to generate converted and quantified coefficients, with entropic coding intended to code the converted and quantified coefficients. The method includes a step of concealing data, during which bits of the data are concealed by modifying converted and quantified coefficients located in a high frequency zone of at least some of the blocks that relate to the luminance component of the video stream and that are intra-coded. This modification is performed after the quantification but before the entropic coding.
    Type: Application
    Filed: February 20, 2020
    Publication date: March 10, 2022
    Inventors: Jean-Marie MOUREAUX, Amine CHAABOUNI, Yann GAUDEAU