Week 13 Deliverables

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 As the construction went on and the burn plot was finished, this field outing was used to create a 3D model of the construction trailers, and vehicles, while collecting data to show differences in the south burn plot.

Similar to the field outing in the prior week, the flight took place at PWA over the construction, south burn plot, and the salamander tanks. The data will be used for comparison in a later field outing, similarly to the first field outing. The metadata is posted below from the flight that was performed.

General

LOCATION

PURDUE WILDLIFE AREA

dATE

041221

VEHICLE

MAVIC 2 PRO

SENSOR

N/A

BATTERY

2

fLIGHT INFORMATION

FLIGHT NUMBER

1

tAKEOFF TIME

14:34 EST

LANDING TIME

14:41

ALTITUDE (M)

121.92

SENSOR ANGLE

60 DEGREES

oVERLAP

80%

SIDELAP

80%

GEOLOCATING

SYSTEM USED (GCP TYPE/PPk)

GCP TYPE

COORDINATE SYSTEM

WGS 1984 UTM ZONE 6

wEATHER

METAR USED

KLAF

cREW

pIC

MATT WATSON

VO

BRYAN JACOBS

SUBMITTER

MATT WATSON

Notes:

  • Wind: 14 knots, gusting 25 knots
  • There were not any issues with the UAV or the environment we worked in

The 60-degree angle was used to help generate 3D models of the vehicles and trailers since it allows the data to collect the sides of those vehicles and trailers, creating a higher quality 3D mesh of them. After using Pix4DMapper, the point cloud that was generated is shown in Figure 1.


Figure 1 shows the point cloud after the initial processing.

As it can be seen, the images in reference to where they are taken show they were taken at that 60-degree angle. When the flight plan was created on Measure Ground Control, the camera and gimbal were initialized to not keep a set direction when collecting, which is shown from the image above. To better prove the effectiveness of the 3D mesh and the camera angle, a few images from the data are shown below in Figure 2, Figure 3, and Figure 4.


Figure 2 shows a bulldozer within the construction site.


Figure 3 shows the construction trailers that are barely outside of the construction area.


Figure 4 shows the salamander tanks that are within the PWA area.

The 3D models of the bulldozer, construction trailers, and the salamander tanks are not the highest of resolutions, but it still serves the purpose of creating that model and being able to identify the object. In future field outings, to increase the resolution and quality of the data, multiple flights that are perpendicular to the original flight can be executed to ensure that all sides of the object are included. The quality report from this processing is linked here. After data processing the 3D model, orthomosaic, and DSM, ArcGIS Pro was used to create maps for this week’s field outing. The maps generated are shown in Figure 5 and Figure 6.

Figure 5 shows the map of the DSM, displaying close-ups of the construction site and the salamander tanks.

Figure 6 shows the orthomosaic version of the data and has more closeups for reference to the subjects displayed on the DSM map.



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