Abstract
Currently, the use of free and open-source software is increasing. The flexibility, availability, and maturity of this software could be a key driver to develop useful and interesting solutions. In general, open-source solutions solve specific tasks that can replace commercial solutions, which are often very expensive. This is even more noticeable in areas requiring analysis and manipulation/visualization of a large volume of data. Considering that there is a major gap in the development of web applications for photogrammetric processing, based on open-source technologies that offer quality results, the application presented in this article is intended to explore this niche. Thus, in this article a solution for photogrammetric processing is presented, based on the integration of MicMac, GeoServer, Leaflet, and Potree software. The implemented architecture, focusing on open-source software for data processing and for graphical manipulation, visualization, measuring, and analysis, is presented in detail. To assess the results produced by the proposed web application, a case study is presented, using imagery acquired from an unmanned aerial vehicle in two different areas.
Highlights
A wide range of geodetic procedures and methods to record the actual state of objects on the Earth surface is available [1]
Despite the high costs associated with commercial software, it is important to consider that software providers make all of needed functionalities available off-the-shelf in a single software package, whereas free and open-source software (FOSS) usually offer a single category of functionalities [14]
Module 1 is responsible for the photogrammetric processing, receiving as inputs the images collected by unmanned aerial vehicles (UAVs) and producing as outputs an orthophoto mosaic and a 3D dense point cloud
Summary
A wide range of geodetic procedures and methods to record the actual state of objects on the Earth surface is available [1]. Despite the high costs associated with commercial software, it is important to consider that software providers make all of needed functionalities available off-the-shelf in a single software package, whereas free and open-source software (FOSS) usually offer a single category of functionalities [14]. In this way, the development of a global and complete application involves the use of different open-source libraries, which has become a great challenge for developers [15]. All GUI solutions presented applied the abstracting command line provided by MicMac software, none of them has available graphical solutions for the manipulation and visualization of the achieved results, using photogrammetric processing (e.g., visualization of orthophoto mosaics and point clouds).
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