Patents by Inventor Albert Parra

Albert Parra 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 video compression
    Patent number: 11582489
    Abstract: A method is disclosed. In the method, color differences are calculated between a current video frame and a motion predicted version of the current video frame based on a human visual system's ability to perceive the color differences. Also, information in a difference frame is discarded based on the color differences. The difference frame includes differences between the current video frame and the motion predicted version of the current video frame.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: February 14, 2023
    Assignees: Hewlett-Packard Development Company, L.P., Purdue Research Foundation
    Inventors: Mark Shaw, Albert Parra, Jan Allebach
  • TECHNIQUES FOR VIDEO COMPRESSION
    Publication number: 20190116383
    Abstract: A method is disclosed. In the method, color differences are calculated between a current video frame and a motion predicted version of the current video frame based on a human visual system's ability to perceive the color differences. Also, information in a difference frame is discarded based on the color differences. The difference frame includes differences between the current video frame and the motion predicted version of the current video frame.
    Type: Application
    Filed: November 30, 2018
    Publication date: April 18, 2019
    Inventors: Mark Shaw, Albert Parra, Jan Allebach
  • Video compression using perceptual modeling
    Patent number: 10148982
    Abstract: Disclosed are techniques for video stream compression. A motion predicted frame and a current frame of video data are converted from a source color space to a perceptual color space. A delta (?) frame is calculated between the current frame and the motion predicted frame. Input color difference values between the current frame and the motion predicted frame are determined and mapped to a normalized output to create a tone mapped color difference image. The tone mapped color difference image and ? frame are multiplied to obtain a weighted ? frame. ? loss is calculated as the difference between the weighted ? frame and the ? frame. A variance map of the motion predicted frame is multiplied by the ? loss to obtain a ? preservation map. The weighted ? frame and ? preservation map are summed to obtain a modified ? frame which may be transformed, quantized and encoded.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: December 4, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mark Shaw, Albert Parra, Jan Allebach
  • Improved Video Compression using Perceptual Modeling
    Publication number: 20150334422
    Abstract: Disclosed are techniques for video stream compression. A motion predicted frame and a current frame of video data are converted from a source color space to a perceptual color space. A delta (?) frame is calculated between the current frame and the motion predicted frame. Input color difference values between the current frame and the motion predicted frame are determined and mapped to a normalized output to create a tone mapped color difference image. The tone mapped color difference image and ? frame are multiplied to obtain a weighted ? frame. ? loss is calculated as the difference between the weighted ? frame and the ? frame. A variance map of the motion predicted frame is multiplied by the ? loss to obtain a ? preservation map. The weighted ? frame and ? preservation map are summed to obtain a modified ? frame which may be transformed, quantized and encoded.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 19, 2015
    Inventors: Mark Quentin Shaw, Albert Parra, Jan Allebach