DEVICE FOR GENERATING WOVEN PATTERN IMAGE, DEVICE FOR EMBEDDING WATERMARK DATA, AND DEVICE FOR DETECTING WATERMARK DATA

摘要

The block patterns corresponding to the values of bits constituting a coding bit string generated by coding sections (13a to 13d, 14a to 14p) are arranged in order to generate partial woven pattern images (E, F), and the partial woven pattern images (E, F) are combined to generate a woven pattern image (G) which is watermark image data, and the woven pattern image (G) is superimposed on an image targeted for the embedding of the watermark.