Calibration mark apparatus
A calibration mark apparatus includes a support having at least one wall with at least one calibration pattern on the least one wall and at least one attachment portion extending from the least one wall. The attachment portion may be a flap extending from at least one wall for attaching the support to a surface or a net. The support may be a three-dimensional (3D) structure. The calibration mark apparatus may have walls that are foldable along a common edge into a single plane. The calibration mark apparatus may have a base connecting the walls including raised tab portions arranged to fit into slots in the flap. The flap may include openings for attaching multiple supports together by a rope that is arranged to feed through the openings. The calibration mark apparatus may include a bracket to mount the support to a surface or a net by clips.
1 . A calibration mark apparatus comprising:
a support having at least one wall and at least one calibration pattern on the least one wall; and
at least one attachment portion extending from at least one of the at least one wall, the at least one attachment portion comprising a flap extending from at least one of the at least one wall, the flap being configured for attaching the support to a surface or a net.
2 . The calibration mark apparatus according to claim 1 , wherein the support is a three-dimensional structure.
3 . The calibration mark apparatus according to claim 2 , wherein the three-dimensional structure has a prism shape.
4 . The calibration mark apparatus according to claim 2 , wherein the three-dimensional structure has a triangular prism shape comprising a pair of walls extending from a common edge to a pair of spaced apart edges opposite to the common edge, the pair of walls each having an inner surface facing each other and an outer surface facing away from each other, the at least one calibration pattern being on at least one of the outer surfaces.
5 . The calibration mark apparatus according to claim 4 , wherein the pair of walls are foldable along the common edge into a single plane.
6 . The calibration mark apparatus according to claim 4 , further including a base connected to the pair of the spaced apart edges opposite to the common edge.
7 . The calibration mark apparatus according to claim 6 , wherein the base is further connected to the flap of the at least one attachment portion.
8 . The calibration mark apparatus according to claim 7 , wherein the flap includes one or more slots, and the base includes one or more raised tab portions, wherein at least one raised tab portion is arranged to fit into the one or more slots of the flap.
9 . The calibration mark apparatus according to claim 7 , wherein the flap includes openings configured for attaching multiple supports together such that the multiple supports are spaced from each other.
10 . The calibration mark apparatus according to claim 9 , further including a rope arranged to feed through the openings to attach the multiple supports together.
11 . The calibration mark apparatus according to claim 1 , further including a base connected to the support.