GeoCue’s repository of TrueView tools, tips and workflows for the TrueView line of drone mapping products. Includes former AirGon products such as Loki and ASPSuite.
Formatting the SD card through DJI Go 4 is useful when SD card space is needed and you do not want to remove the SD card from the aircraft (or personality cable). Be sure all important information has been downloaded before formatting the card because this process will erase everything. Here are the steps to…
Structure from Motion (SfM) algorithms used by image -to-point cloud applications require strong overlap to create an accurate 3D model. Missions should be planned to include both forward overlap, and side overlap. To achieve this, the mission must have at least two flights lines, but more is better.
It is always best practice to submit your static base observation data to an online post-processing service to obtain the position of your base station. However, it is possible to process your Loki data with a base coordinate that has not been processed. If a base position is needed to check for a fixed solution…
The answer to this question will depend on the Structure from Motion software being used. The two primary components are: The ability to use high-accuracy geotags. Loki provides highly accurate geotagged images with accuracy values written to the XMP metadata. We also produce a simple .csv text file for applications unable to read that…
Prolog: I am writing a new whitepaper on model constraints in LP360 (any reference to LP360 where I do not add the term “for ArcGIS,” I am talking about the standalone version. This document is extracted and heavily revised from a series of articles that I wrote for the GeoCue Group Newsletter in 2013. The…
Using Loki, AirGon’s precision positioning system, very accurate georeferenced imagery can be collected using DJI drones over an area of interest. The positions from which those photos are captured are output from the ASP Suite workflow as geographic locations, described by latitude, longitude, and altitude coordinates. Image-to-point cloud software applications such as Agisoft PhotoScan and…
The Agisoft Lens User Manual provides information and guidance on the use of Agisoft Lens. Agisoft Lens is an automatic lens calibration software, which uses an LCD screen as a calibration target. It supports estimation of the full camera calibration matrix, including non-linear distortion coefficients. Estimated calibration parameters can be saved in human readable file…
LP360 has a Point Cloud Task (PCT) that can reproject raster layers, create pyramids, and JPEG compress. The PCT is named Reproject Raster. When we reproject an existing orthophoto to a new coordinate system, or re-write to a different unit, the user can choose to output uncompressed, or JPEG compressed. If JPEG compression is selected, the user…
