Patents by Inventor Dorina Thanou

Dorina Thanou 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).

  • Techniques for encoding and decoding digital data using graph-based transformations
    Patent number: 11122298
    Abstract: A method and an apparatus for encoding and/or decoding digital images, wherein the encoding apparatus includes a processor configured for determining weights of a graph related to an image by minimizing a cost function, transforming the weights through a graph Fourier transform, quantizing the transformed weights, computing transformed coefficients through a graph Fourier transform of a graph having the transformed weights as weights, de-quantizing the quantized transformed weights, computing a reconstructed image through an inverse graph Fourier transform on the basis of the de-quantized transformed weights, computing a distortion cost on the basis of the reconstructed image and the original image, generating a final encoded image on the basis of the distortion cost.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: September 14, 2021
    Assignees: Sisvel Technology S.R.L., Ecole Polytechnique Federale De Lausanne (EPFL)
    Inventors: Giulia Fracastoro, Dorina Thanou, Pascal Frossard
  • Methods and Apparatuses for Encoding and Decoding Digital Images or Video Streams
    Publication number: 20200228840
    Abstract: A method and an apparatus for encoding and/or decoding digital images, wherein the encoding apparatus includes a processor configured for determining weights of a graph related to an image by minimizing a cost function, transforming the weights through a graph Fourier transform, quantizing the transformed weights, computing transformed coefficients through a graph Fourier transform of a graph having the transformed weights as weights, de-quantizing the quantized transformed weights, computing a reconstructed image through an inverse graph Fourier transform on the basis of the de-quantized transformed weights, computing a distortion cost on the basis of the reconstructed image and the original image, generating a final encoded image on the basis of the distortion cost.
    Type: Application
    Filed: November 29, 2017
    Publication date: July 16, 2020
    Inventors: Giulia Fracastoro, Dorina Thanou, Pascal Frossard