Placing the Marker

The marker is placed near the work area. The marker must be placed in a position where the positional relationship with the work area does not vary, and where the marker is easy to be snapped by the camera.
However, to increase offset accuracy, it is preferable to place the marker in the following ways.

1 Minimize the standoff in the area where the marker can be detected
2 As close to the work area (offset position) as possible

When a small-sized (narrow grid spacing) calibration grid is used, the limitations on placement position are reduced.