AT 209 Lab 4: LineVision

Introduction

For Lab 4, we used the program LineVision. LineVision is a software that maps out videos taken on different UAS using GPS locating and camera orientation. For the lab, we used a video shot for observing controlled burnings in a field. The purpose of the lab was to locate green trees, a Gator vehicle, ATV, a blue truck, and the start and end coordinates of the two fire lines created. 

Methods

Using the software provided, we mapped out every location of the stated items above. While we were mapping out the different items, we were required to document the latitude, longitude, UTC time and the time within the video. Below, Figures 1-3 will step through the process used on LineVision.

Figure 1: Above is the basic interface; the top left is the video, and to the right is the actual map of where the video take place.

Figure 2: Although the mouse pointer is not shown, the green trees are being pointed to, and the yellow dot on the map is the real time location of where the mouse is located in the video.

Figure 3: Using the point from Figure 2, above shows the metadata of the location selected on the video. In the metadata, it states latitude, longitude, altitude, UTC time and video timecode.

Discussion

In Figure 4, the data collected by all points and metadata are shown.

Figure 4: The data above is all of the metadata associated to each point.

While working with LineVision, the system tended to map out the various points created in random order. Although the software said where the locations of things were at, it was very obvious if they were wrong. After multiple tries for each point, they eventually became correct, which is the data that was presented above.

Conclusion

Keeping in mind that LineVision is technically in beta edition still, the software preformed fairly well. There was moments of frustration and inaccuracy, but overall the applicability of this software is high. It can be a very useful tool for mapping out flights and geotagging various points of interest. Using GPS for mapping out the data is very useful. For example, if a person was lost, but a UAS was able to acquire a video with the victim in it, the data can be used to find a location of where the person could possibly be, making it easier for search in rescue. This system was very buggy but was very inciteful for the types of applications for UAS.