Patents by Inventor Ahmed Hazem El-Mahdy

Ahmed Hazem El-Mahdy 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).

  • High dynamic range video tone mapping
    Patent number: 10013746
    Abstract: A method for tone-mapping a High Dynamic Range (HDR) data video stream encoded in MPEG format, the method comprising decoding the data video HDR data stream to generate decoded I-frames, auxiliary decoded data related to P-Frames, and auxiliary decoded data related to B-Frames, the method further comprising applying a tone mapping function to each decoded I-Frame to provide a tone-mapped I-Frame according to a tone mapping operator, for each P-frame depending on a reference I-frame, computing the tone-mapped P-frame from the tone-mapped I-Frame previously determined for the reference I-frame, the reference I-Frame, and the auxiliary decoding data related to the P-Frame; and, for each B-frame, computing the tone-mapped B-frame from the tone mapped I-frame previously determined for the reference I-frame, the tone mapped P-frame previously determined for the reference P-frame, and the auxiliary decoding data related to the B-Frame.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: July 3, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ahmed Hazem El-Mahdy, Hisham Emad Elshishiny
  • High Dynamic Range Video Tone Mapping
    Publication number: 20120147953
    Abstract: A method for tone-mapping a High Dynamic Range (HDR) data video stream encoded in MPEG format, the method comprising decoding the data video HDR data stream to generate decoded I-frames, auxiliary decoded data related to P-Frames, and auxiliary decoded data related to B-Frames, the method further comprising applying a tone mapping function to each decoded I-Frame to provide a tone-mapped I-Frame according to a tone mapping operator, for each P-frame depending on a reference I-frame, computing the tone-mapped P-frame from the tone-mapped I-Frame previously determined for the reference I-frame, the reference I-Frame, and the auxiliary decoding data related to the P-Frame; and, for each B-frame, computing the tone-mapped B-frame from the tone mapped I-frame previously determined for the reference I-frame, the tone mapped P-frame previously determined for the reference P-frame, and the auxiliary decoding data related to the B-Frame.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 14, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ahmed Hazem El-Mahdy, Hisham Emad Elshishiny