An Accurate Real-Time Uav Mapping Solution for the Generation of Orthomosaics and Surface Models

Alexander, Kern; Fanta-Jende, P.; Glira, Philipp; Bruckmüller, Felix; Sulzbachner, Christoph

doi:10.5194/isprs-archives-xliii-b1-2021-165-2021

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The range of applications for employing UAV platforms for monitoring dynamic and complex environments has recently increased thanks to the proliferation of platforms on the market, the additional onboard devices, the faster and more reliable communication methods, and the improved battery life. The next generation of UAV applications is quickly approaching because of the advancement in real-time onboard processing [21] and the development of autonomous and dependable systems [22].…”

Section: Introductionmentioning

confidence: 99%

Simulating a Hybrid Acquisition System for UAV Platforms

Alsadik

Remondino

Nex

2022

Drones

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Currently, there is a rapid trend in the production of airborne sensors consisting of multi-view cameras or hybrid sensors, i.e., a LiDAR scanner coupled with one or multiple cameras to enrich the data acquisition in terms of colors, texture, completeness of coverage, accuracy, etc. However, the current UAV hybrid systems are mainly equipped with a single camera that will not be sufficient to view the facades of buildings or other complex objects without having double flight paths with a defined oblique angle. This entails extensive flight planning, acquisition duration, extra costs, and data handling. In this paper, a multi-view camera system which is similar to the conventional Maltese cross configurations used in the standard aerial oblique camera systems is simulated. This proposed camera system is integrated with a multi-beam LiDAR to build an efficient UAV hybrid system. To design the low-cost UAV hybrid system, two types of cameras are investigated and proposed, namely the MAPIR Survey and the SenseFly SODA, integrated with a multi-beam digital Ouster OS1-32 LiDAR sensor. Two simulated UAV flight experiments are created with a dedicated methodology and processed with photogrammetric methods. The results show that with a flight speed of 5 m/sec and an image overlap of 80/80, an average density of up to 1500 pts/m2 can be achieved with adequate facade coverage in one-pass flight strips.

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Section: Introductionmentioning

confidence: 99%

Simulating a Hybrid Acquisition System for UAV Platforms

Alsadik

Remondino

Nex

2022

Drones

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Semantic Real-Time Mapping with UAVs

Fanta-Jende

Steininger

Alexander

et al. 2023

PFG

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Whilst mapping with UAVs has become an established tool for geodata acquisition in many domains, certain time-critical applications, such as crisis and disaster response, demand fast geodata processing pipelines rather than photogrammetric post-processing approaches. Based on our 3D-capable real-time mapping pipeline, this contribution presents not only an array of optimisations of the original implementation but also an extension towards understanding the image content with respect to land cover and object detection using machine learning. This paper (1) describes the pipeline in its entirety, (2) compares the performance of the semantic labelling and object detection models quantitatively and (3) showcases real-world experiments with qualitative evaluations.

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Navigation methods using airlandscape data for small UAVs

Miroshnichenko,

Mukhin

2024

jour

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The purpose of the research. UAVs are widely used in such fields as military, intelligence, and research. As a result, the issue of their use in electronic warfare conditions and the presence of various interference, both man-made and natural, is acute. Thus, the need for UAV navigation using visual data increases.The purpose is study of the main negative factors affecting the quality of aerial photography images and methods for eliminating them to construct a correct orthomosaic for UAV visual navigation.Methods. Mathematical methods are proposed to eliminate negative distortions in UAV camera images using various image transformation approaches. After applying these methods to the original images, corrected versions are obtained, which are used to construct the tile covering. Tiled coverage created from processed images provides continuous and uniform coverage of the area collected during the UAV’s flight. This allows you to obtain exact coordinates of images and objects on them.Results. An analysis of the main methods for eliminating negative factors that distort images during aerial photography for the visual navigation of UAVs, as well as a brief overview of the visual navigation methods themselves.Conclusion. To successfully implement visual navigation of a UAV, it is necessary to apply a number of methods for converting aerial photography images, as well as the use of certain algorithms for visual navigation. It is concluded that in addition to the use of mathematical and software algorithms, it will also be necessary to analyze and study the necessary computing power for the use of the entire hardware and software complex on board the UAV, taking into account its weight-dimensional properties.

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An Accurate Real-Time Uav Mapping Solution for the Generation of Orthomosaics and Surface Models

Cited by 3 publications

References 14 publications

Simulating a Hybrid Acquisition System for UAV Platforms

Simulating a Hybrid Acquisition System for UAV Platforms

Semantic Real-Time Mapping with UAVs

Navigation methods using airlandscape data for small UAVs

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