| 摘要 |
A dot pattern including a block defined as a rectangular area of a square or a rectangle of a medium face, such as printed matter. A straight line in a vertical direction and a horizontal direction configuring a frame of the block each are defined as a standard grid line. Virtual reference grid points are provided at predetermined intervals on the reference grid line. Reference grid point dots are placed on respective virtual reference grid points. Straight lines that connect the virtual reference grid points to each other and are parallel to the reference grid lines are defined as grid lines. A point of intersection of grid lines is defined as a virtual grid point. A dot pattern is generated by arranging one or a plurality of information dots, each of which has a distance and a direction around the virtual grid point. |
