3D Trajectory Planning for Real-Time Image Acquisition in UAV-assisted VR

Nowadays, unmanned aerial vehicles (UAVs), empowered with the capability of high-definition image transmission, are used to capture the rapidly changing physical environment by leveraging its high flexibility to reconstruct an immersive realistic virtual environment for metaverse users. In this pape...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2024-01, Vol.23 (1), p.1-1
Main Authors: Tang, Xiao-Wei, Huang, Yi, Shi, Yunmei, Huang, Xin-Lin, Shi, Qingjiang
Format: Article
Language:English
Subjects:
Algorithms
Autonomous aerial vehicles
Energy consumption
High definition
Image acquisition
Image quality
Image reconstruction
Image transmission
Mixed integer
Optimization
Performance evaluation
Real time
Sensors
Three-dimensional displays
three-dimensional trajectory design
Trajectory
Trajectory planning
Unmanned aerial vehicles
Virtual environments
Virtual reality
Wireless communication
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Summary:Nowadays, unmanned aerial vehicles (UAVs), empowered with the capability of high-definition image transmission, are used to capture the rapidly changing physical environment by leveraging its high flexibility to reconstruct an immersive realistic virtual environment for metaverse users. In this paper, we consider a novel UAV-assisted image acquisition system where a UAV is dispatched to take off from an initial location to capture real-time images of multiple ground targets and then transfer the captured images back to the ground user for virtual environment reconstruction. We aim to minimize the time for the UAV to complete the image acquisition task by optimizing the three-dimensional UAV trajectory under the constraints of image quality, information causality and energy consumption. To this end, we first formulate the investigated scenario into a mixed integer optimization problem, which, however, is difficult to solve due to the infinite time-varying variables closely coupled with each other. Then, a three-stage progressive algorithm is proposed to obtain an efficient solution to the formulated mixed integer optimization problem, where the constraints of image quality, information causality and energy consumption can be sequentially satisfied. Finally, comprehensive performance evaluation is conducted to verify the effectiveness of the proposed three-stage progressive trajectory design algorithm, and the results show that the proposed algorithm significantly outperforms the benchmark schemes.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2023.3274571