INDOOR PHOTOGRAMMETRY USING UAVS WITH PROTECTIVE STRUCTURES: ISSUES AND PRECISION TESTS
| Autor: | G. Brambilla, Andrea Piemonte, Gabriella Caroti, I. Martínez-Espejo Zaragoza |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
safety survey
010504 meteorology & atmospheric sciences 3D Model Computer science UAV 0211 other engineering and technologies UAV Collision-Tolerant Drone Photogrammetry 3D Model safety survey BVLOS control Field of view 02 engineering and technology Collision-Tolerant Drone 01 natural sciences law.invention Lens (optics) Photogrammetry law Systems engineering 021101 geological & geomatics engineering 0105 earth and related environmental sciences BVLOS control |
| ISSN: | 2194-9034 |
| Popis: | Management of disaster scenarios requires applying emergency procedures ensuring maximum safety and protection for field operators. Actual conditions of disaster sites are labelled as “Triple-D: Dull, Dusty, Dangerous” areas. It is well known that in this kind of areas and situations remote surveying systems are at their very best effective, and among these UAVs currently are an effective and performing field tool. Indoor spaces are a particularly complex scenario for this kind of surveys. In this case, technological advances currently offer micro-UAV systems, featuring 360° protective cages, which are able to collect video streams while flying in very tight spaces. Such cases require manual control of the vehicle, with the operator piloting the aircraft without prior knowledge of the status quo of the survey object and therefore without prior planning of flight paths. A possible benefit in terms of knowledge of the survey object could lay in the creation of a 3D model based on images extracted by video streams; to date, widely tested methods and techniques are available for processing UAV-borne video streams to obtain such models. Anyway, the protective cage and the need to use, in these operating conditions, wide-angle lenses presents some issues linked to ever-changing image framing, due to the presence of the cage wires on the field of view. The present work focused on this issue. Using this type of UAVs, video streams have been collected in different environments, both indoors and outdoors, testing several procedures for photogrammetric processing in order to assess the ability to create 3D models. These have been tested for reliability based on data collection conditions, also assessing the level of automation and speed attainable in post-processing. The present paper describes the different tests carried out and the related results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|