Hi
I was recently given the task to create a orthomosaic using our Phantom 4 Pro of a rock outcrop in South Africa for a geological research project. In preparation for this task I downloaded the Precision Flight app and went for a practice session the weekend before. After the flight I uploaded the photographs onto the PrecisionMapper website and got a perfectly beautiful result (see attached image called "Church"). Thereafter I was confident to try and go and map the rock exposure.
However, the map of the rock exposure was a complete failure (the attached image is called Tennisball Marker). There appears to be a lot of black "fractures" in the final product and the result doesn't make any sense at all. When I looked at the pictures the drone took they also appeared to be a bit erratic; in some cases photographs do not seem to overlap as they should and it seems like the drone changed its direction in the middle of a traverse when it was supposed to fly in a straight line on one occasion.
I have no idea what went wrong. Between the successful and failed attempts I updated the firmware of the drone. Could this possibly have had an effect? The drone also flew at a different altitude (45 meters for the failed attempt, 100 meters for the successful one). The elevation at the failed site was also much more irregular compared to the successful site which was relatively flat.
Any help would be appreciated! I will need to go remap the rock exposure again sometime in the future but before I go I need to know what went wrong the first time.
Thanks!
I was recently given the task to create a orthomosaic using our Phantom 4 Pro of a rock outcrop in South Africa for a geological research project. In preparation for this task I downloaded the Precision Flight app and went for a practice session the weekend before. After the flight I uploaded the photographs onto the PrecisionMapper website and got a perfectly beautiful result (see attached image called "Church"). Thereafter I was confident to try and go and map the rock exposure.
However, the map of the rock exposure was a complete failure (the attached image is called Tennisball Marker). There appears to be a lot of black "fractures" in the final product and the result doesn't make any sense at all. When I looked at the pictures the drone took they also appeared to be a bit erratic; in some cases photographs do not seem to overlap as they should and it seems like the drone changed its direction in the middle of a traverse when it was supposed to fly in a straight line on one occasion.
I have no idea what went wrong. Between the successful and failed attempts I updated the firmware of the drone. Could this possibly have had an effect? The drone also flew at a different altitude (45 meters for the failed attempt, 100 meters for the successful one). The elevation at the failed site was also much more irregular compared to the successful site which was relatively flat.
Any help would be appreciated! I will need to go remap the rock exposure again sometime in the future but before I go I need to know what went wrong the first time.
Thanks!