Visual information, sparse decomposition, and transmission for multi- UAV visual navigation

Hui Liu; Qionghai Dai

doi:10.1117/12.919585

3 May 2012 Visual information, sparse decomposition, and transmission for multi- UAV visual navigation

Hui Liu, Qionghai Dai

Proceedings Volume 8360, Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications IX; 83600W (2012) https://doi.org/10.1117/12.919585
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

In recent years, visual navigation of unmanned aerial vehicles (UAVs) has been an active area of research. There is a large amount of visual information to be processed and transmitted with real-time requirements for the flight scenes change rapidly. However, it has already become one of the major factors that block the cooperative communication in multi-UAV visual navigation. The traditional video image orthogonal decomposition methods can not be well adapted to the multi-UAV visual navigation system, because with the compression ratio increases, there is a sharp decline in video image quality. This paper proposes a novel visual information sparse decomposition and transmission (VSDT) framework for multi-UAV visual navigation. In the framework, aiming at the visual information characteristics, firstly we pre-process the video images by introducing a multi-scale visual information acquisition mechanism. Then a fast video image sparse decomposition is made for transmission. It can greatly reduce the original video information amount, while the quality of visual information needed for navigation is guaranteed. Finally, based on data correlations and feature matching, a real-time transmission scheme is designed to make the receiver UAV can quickly reconstruct the flight scene information for navigation. The simulated results are presented and discussed. The main advantage of this framework lies in the ability to reduce the visual information transmission amount while ensuring the quality of visual information needed for navigation and solve the cooperative communication problems such as information lag, data conjunction and match error often encountered in multi-UAV visual navigation environment.

Citation Download Citation

Hui Liu and Qionghai Dai "Visual information, sparse decomposition, and transmission for multi- UAV visual navigation", Proc. SPIE 8360, Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications IX, 83600W (3 May 2012); https://doi.org/10.1117/12.919585

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KEYWORDS

Information visualization

Visualization

Unmanned aerial vehicles

Chemical species

Video

Image quality

Image transmission

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