DEVICE AND METHOD FOR FORMING WOVEN PATTERN, AND DEVICE AND METHOD FOR DETECTING WOVEN PATTERN

摘要

Provided are a synchronization pattern determining section (3) for determining a dot pattern composed of a plurality of straight lines which intersect at one reference point as a synchronization pattern and a bit pattern determining section (4) for determining a plurality of dot patterns as bit patterns, wherein the dot patterns are composed of a plurality of straight lines and in which the slope of the straight lines are different from one another.Bit patterns corresponding to the bit values of embedding information are selected from the plurality of bit patterns and arranged. The synchronization pattern is also arranged to form a woven pattern.