ShelfClaim

Scale marker

Print at 100% (no "fit to page"). The black square must measure exactly 10 cm.

ArUco scale marker, 10 cm
This bracket is 10 cm. Check it with a ruler after printing.
  1. Tape the sheet flat on the front edge of a shelf, facing out, at about chest height.
  2. At the start of the sweep, show it to the camera from about an arm's length away.
  3. ShelfClaim uses its known size to turn pixels into centimetres for every spine on that unit.

If the square is not 10 cm, set MARKER_SIZE_CM on the server to the size you measured.