Patents by Inventor Paul Apostolos Drakopoulos

Paul Apostolos Drakopoulos 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).

  • Color printer characterization using optimization theory and neural networks
    Patent number: 6480299
    Abstract: A color management method/apparatus generates image color matching and International Color Consortium (ICC) color printer profiles using a reduced number of color patch measurements. Color printer characterization, and the generation of ICC profiles usually require a large number of measured data points or color patches and complex interpolation techniques. This invention provides an optimization method/apparatus for performing LAB to CMYK color space conversion, gamut mapping, and gray component replacement. A gamut trained network architecture performs LAB to CMYK color space conversion to generate a color profile lookup table for a color printer, or alternatively, to directly control the color printer in accordance with the a plurality of color patches that accurately. represent the gamut of the color printer.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: November 12, 2002
    Assignee: University Technology Corporation
    Inventors: Paul Apostolos Drakopoulos, Ganesh Subbarayan