DIGITAL WATERMARK PATTERN EMBEDDING DEVICE, GENERATING METHOD AND DETECTING DEVICE OF DIGITAL WATERMARK PATTERNS

摘要

PPROBLEM TO BE SOLVED: To generate numerous digital watermark patterns and detect embedded information easily only by preparing one embedding pattern even if the number of pieces of information embedded by means of a digital watermark increases. PSOLUTION: A digital watermark pattern generating part 4 generates a digital watermark pattern by segmenting a section on a random pattern in an original pattern storing part 6 indicated by location information corresponding to embedding information sent from an embedding information storing part 10, and embeds it into image data sent from an original image storing part 12. This makes it possible to generate numerous digital watermark patterns and detect embedded information easily, even if the number of pieces of information embedded by means of digital watermark increases. PCOPYRIGHT: (C)2005,JPO&NCIPI