| 摘要 |
A two-dimensional code includes a polygonal exterior region distinguishable from a background on the basis of brightness or color and an interior region disposed at a predetermined distance from the perimeter of the exterior region. The interior region is divided into cells of a predetermined size so that information is represented by brightness or color of each of the cells. The cells, each having the shape of a hexagon, are disposed so as to abut each other.
|
