×

Method and apparatus for processing image data and computer program

  • US 20050117774A1
  • Filed: 03/25/2004
  • Published: 06/02/2005
  • Est. Priority Date: 11/28/2003
  • Status: Active Grant
First Claim
Patent Images

1. An image data processing apparatus comprising:

  • a dividing unit that divides image data into a plurality of blocks;

    an extracting unit that extracts a feature index of a first color component and a feature index of a second color component in each of the blocks;

    a registration unit that registers information about a correspondence between the feature index of the second color component and a change in the feature index for the first color component; and

    a code embedding unit that embeds a predetermined code into the image data, by changing the feature index of the first color component based on the feature index of the second color component, using the information registered.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×