Adelaide-based DroneMetrex has successfully performed another project using its premier mapping system TopoDrone-100. This time the Client was one of the key players in recycling and waste management industry of Australia and DroneMetrex managed to make a humble contribution to the cleaner environment of the country.

The mapping project helped the Client solve lots of important issues and the TopoDrone-100 accuracy proved to be paramount in this respect.

The Client is licensed by the Environment Protection Authority (EPA) to build the waste mounds to an absolute height of 26m above sea level (ASL). After several months, the compaction of the waste, due to it's own weight and top-soil, reduced the height of these large waste mounds.

This provided the opportunity for more waste to be added onto the same mound. Therefore, it became vitally important that the accurate height of the mounds is regularly monitored as this would ensure that the mounds are always under the absolute ASL height, which is a legal obligation. At the same time, monitoring the amount of waste mound compaction allowed the Client to financially benefit by adding additional waste to the same mound.

Secondly, the project also involved the mapping of the whole area owned by the Client, in order to be used as the base mapping for future planned expansion of the waste processing requirements. Importantly, the mapping needed to be months, the compaction of the waste, due to it's own weight and top-soil, reduced the height of these large waste mounds. This provided the opportunity for more waste to be added onto the same mound.

Therefore, it became vitally important that the accurate height of the mounds is regularly monitored as this would ensure that the mounds are always under the absolute ASL height, which is a legal obligation. At the same time, monitoring the amount of waste mound compaction allowed the Client to financially benefit by adding additional waste to the same mound.

Secondly, the project also involved the mapping of the whole area owned by the Client, in order to be used as the base mapping for future planned expansion of the waste processing requirements. Importantly, the mapping needed to be mera with Zeiss lens, full-framed sensor and leaf-shutter, the imagery captured is "photogrammetry-ready".

To explain; each image is near-nadir, no crab, and without the random geometric errors of all other digital camera systems. We then process with our own software in the pre-processing stage correcting for the known systematic errors.

Once we have the photogrammetric aerial triangulation, and then the generation of the dense point-cloud, we treat this as our base product which allows us to further generate the DTM, DSM, digital orthophoto mosaic, contours and profiles.

Because our TopoDrone data is proper photogrammetric data, we are able to use the stereo image pairs for accurate human "heads-up" 3D digitising of line features if required. The unique mapping accuracies of the TopoDrone enable us to confidently provide photogrammetric accurate data."