The market of consumer UAS is rapidly evolving towards models with high performance RGB cameras following users’ demanding of high-quality photo and video availability. While only professional UAS surveys are widely used in environmental monitoring, consumer UAS are proving to be a cost-effective replacement in some specific contexts. A pool of environmental applications has been proposed: small river monitoring for marble slurry pollution in the proximity of the Apuan Alps extractive basins, small coastal dunes’ geomorphological survey, volume evaluation of non-hazardous waste and/or earth and rocks piles. 3DF Zephyr proprietary software has been used in photogrammetric reconstruction of 3D models and orthoimages used in this test, and a terrestrial phase-difference Laser Scanner has been used in quality assessment of 3D photogrammetric models. Low-cost UAS has shown great precision even in small geomorphological reconstruction applications compared to terrestrial Laser Scanner acquisitions; in the case of marble slurry monitoring, orthoimages showed a great potential in delineating areas affected by marble slurry deposition while the TLS only allowed to assess quota changes over the water surface. While the use of TLS is recommended for a precise volume evaluation of non-hazardous waste and/or earth and rocks piles, in some cases the integration of a UAS survey must be considered, especially when piles show a complex morphology and cannot be scanned at short ranges: in addition, if asbestos fibers are suspected to spread over the survey site, using a UAS is mandatory to ensure that survey operations can be performed ensuring a high safety level for the operators. In all the proposed contexts the use of low cost UAS has been found to improve the offer of survey products, thus allowing more effective environmental monitoring with easy-to-use hardware and software that can be used by medium-skilled pilots. It is expected that in a near future low-cost UAS, due to their simplicity of usage and training, will have a great diffusion in the Regional Environmental not just in many environmental monitoring applications where photogrammetric products are required, but also in photo and video making in dangerous and/or scarcely accessible areas.

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Cost-Effective UAS Photogrammetry in Environmental Monitoring: A Quality Assessment

  • Cinzia Licciardello,
  • Antonio Di Marco,
  • Diego Palazzuoli,
  • Stefania Biagini,
  • Khalil Tayeh

摘要

The market of consumer UAS is rapidly evolving towards models with high performance RGB cameras following users’ demanding of high-quality photo and video availability. While only professional UAS surveys are widely used in environmental monitoring, consumer UAS are proving to be a cost-effective replacement in some specific contexts. A pool of environmental applications has been proposed: small river monitoring for marble slurry pollution in the proximity of the Apuan Alps extractive basins, small coastal dunes’ geomorphological survey, volume evaluation of non-hazardous waste and/or earth and rocks piles. 3DF Zephyr proprietary software has been used in photogrammetric reconstruction of 3D models and orthoimages used in this test, and a terrestrial phase-difference Laser Scanner has been used in quality assessment of 3D photogrammetric models. Low-cost UAS has shown great precision even in small geomorphological reconstruction applications compared to terrestrial Laser Scanner acquisitions; in the case of marble slurry monitoring, orthoimages showed a great potential in delineating areas affected by marble slurry deposition while the TLS only allowed to assess quota changes over the water surface. While the use of TLS is recommended for a precise volume evaluation of non-hazardous waste and/or earth and rocks piles, in some cases the integration of a UAS survey must be considered, especially when piles show a complex morphology and cannot be scanned at short ranges: in addition, if asbestos fibers are suspected to spread over the survey site, using a UAS is mandatory to ensure that survey operations can be performed ensuring a high safety level for the operators. In all the proposed contexts the use of low cost UAS has been found to improve the offer of survey products, thus allowing more effective environmental monitoring with easy-to-use hardware and software that can be used by medium-skilled pilots. It is expected that in a near future low-cost UAS, due to their simplicity of usage and training, will have a great diffusion in the Regional Environmental not just in many environmental monitoring applications where photogrammetric products are required, but also in photo and video making in dangerous and/or scarcely accessible areas.