Pole - Hold Height Stick

Again, holding the height stick in place at the pole will be similar to holding it in place at the midspan with a few subtle differences:

1. The bottom of the height stick must touch the ground. Heights should be calculated relative to the ground. Katapult Pro always calculates heights relative to the bottom of the height stick. If the height stick is raised from the ground, the heights will not represent positioning relative to the ground.

2. The height stick must be straight and flat against the pole. If the height stick is not flat against the pole, depth is introduced. When capturing the three-dimensional pole in a two-dimensional photograph, any depth introduced will create an angle between the height stick and the pole, and the algorithm cannot account for this.

3. The red and white side of the height stick must face the camera. First, this is the side the target stickers which data processors will use to calibrate the photo are on. Second, the red and white sections can be used to manually measure heights if part of the height stick is obstructed. There will be times where obstacles block part of the height stick from view. The most common cause is vegetation. In these cases, ensure 4 known heights are visible. Data Processors can manually calibrate a photo if they have 4 known heights.  Do not raise the stick to avoid an obstruction, prioritize contact with the ground.