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The use of low-level photogrammetry is very broad, and studies in this field are conducted in many aspects. Most research and applications are based on image data acquired during the day, which seems natural and obvious. However, the authors of this paper draw attention to the potential and possible use of UAV photogrammetry during the darker time of the day. The potential of night-time images has not been yet widely recognized, since correct scenery lighting or lack of scenery light sources is an obvious issue. The authors have developed typical day- and night-time photogrammetric models. They have also presented an extensive analysis of the geometry, indicated which process element had the greatest impact on degrading night-time photogrammetric product, as well as which measurable factor directly correlated with image accuracy. The reduction in geometry during night-time tests was greatly impacted by the non-uniform distribution of GCPs within the study area. The calibration of non-metric cameras is sensitive to poor lighting conditions, which leads to the generation of a higher determination error for each intrinsic orientation and distortion parameter. As evidenced, uniformly illuminated photos can be used to construct a model with lower reprojection error, and each tie point exhibits greater precision. Furthermore, they have evaluated whether commercial photogrammetric software enabled reaching acceptable image quality and whether the digital camera type impacted interpretative quality. The research paper is concluded with an extended discussion, conclusions, and recommendation on night-time studies.
Pawel Burdziakowski; Katarzyna Bobkowska. UAV Photogrammetry under Poor Lighting Conditions—Accuracy Considerations. Sensors 2021, 21, 3531 .
AMA StylePawel Burdziakowski, Katarzyna Bobkowska. UAV Photogrammetry under Poor Lighting Conditions—Accuracy Considerations. Sensors. 2021; 21 (10):3531.
Chicago/Turabian StylePawel Burdziakowski; Katarzyna Bobkowska. 2021. "UAV Photogrammetry under Poor Lighting Conditions—Accuracy Considerations." Sensors 21, no. 10: 3531.
Due to the wide reach of media reports about scientific research and technological tools such as the world wide web (WWW), the Internet, and web browsers, citizens today have access to factual information about the negative impact of artificial light at night (ALAN) on their dark skies, and their health and well-being. This means they can now make educated decisions and take the necessary steps to help protect themselves and their communities from disruptive light pollution. Whilst this action is positive and welcomed, unfortunately, according to collected data, not all such initiatives have been successful. Although our understanding of this groundswell movement is deepening, further studies are required to complete a worldwide picture of the current situation. This paper therefore investigates the various actions taken by citizens, as well as the challenges, methods, and tools involved, regarding good practices initiated by grass roots activism on how to reduce existing and potential light pollution. The results of a comparative analysis of 262 international case studies (lawsuits and online petitions) reveal that, since the 1990s, there has been an increase in the number of legal cases related to light pollution due to the rise in public awareness, the availability of scientific knowledge via the Internet, and the ability to take accurate lighting measurements and perform lighting simulations. Also, in the last decade a new tool for digital participation in the form of online petitions has established a new movement of citizen action to mitigate the effects of light pollution. Based on this information, a seven-step framework involving recommendations for citizen action has been developed. It is expected that this new knowledge will benefit those citizens planning future efforts involving the development, implementation, and monitoring processes of outdoor lighting. Additionally, it might support the evolution of planning and policy approaches that are sustainable and necessary to improve the application and installation of ecologically/biologically responsible illumination for towns, cities, and natural habitats.
Karolina M. Zielińska-Dabkowska; Kyra Xavia; Katarzyna Bobkowska. Assessment of Citizens’ Actions against Light Pollution with Guidelines for Future Initiatives. Sustainability 2020, 12, 4997 .
AMA StyleKarolina M. Zielińska-Dabkowska, Kyra Xavia, Katarzyna Bobkowska. Assessment of Citizens’ Actions against Light Pollution with Guidelines for Future Initiatives. Sustainability. 2020; 12 (12):4997.
Chicago/Turabian StyleKarolina M. Zielińska-Dabkowska; Kyra Xavia; Katarzyna Bobkowska. 2020. "Assessment of Citizens’ Actions against Light Pollution with Guidelines for Future Initiatives." Sustainability 12, no. 12: 4997.