Patents by Inventor James Alkofer

James Alkofer 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).

  • Digital color image processing method and apparatus employing three color reproduction functions for adjusting both tone scale and color balance
    Patent number: 4729016
    Abstract: A digital color image processing method and apparatus is characterized by producing three color reproduction functions by normalizing samples of color values from three color components of a digital image. The color reproduction functions are applied to the respective color components of the image to produce dimensionless Z values. A contrast adjusting constant is computed and the dimensionless Z values are multiplied by the constant to adjust the contrast of the processed image. Finally a constant representing the mean density for each of the color components for a particular output medium is added to the contrast adjusted Z values to produce the processed digital image.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: March 1, 1988
    Assignee: Eastman Kodak Company
    Inventor: James Alkofer