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020 ▼a 9781085797566
035 ▼a (MiAaPQ)AAI13887385
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 004
1001 ▼a Li, Yang.
24510 ▼a Artificial Camouflage Systems with Centralized and Decentralized Pattern Formation.
260 ▼a [S.l.]: ▼b University of Colorado at Boulder., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 111 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 ▼a Advisor: Correll, Nikolaus.
5021 ▼a Thesis (Ph.D.)--University of Colorado at Boulder, 2019.
506 ▼a This item must not be sold to any third party vendors.
520 ▼a In nature, many animals display the ability to camouflage themselves in the surroundings by adapting their shapes, colors, and textures. How can we engineer artificial systems that have similar ability? Inspired by those natural camouflage, this thesis focuses on exploring and designing the artificial camouflage systems.This thesis first surveys the components needed to design possible systems for camouflage capability, from visual perception, camouflage patterns, pattern formation, to color-changing cells. It then reviews the mathematical models proposed for pattern formation in the literature, most of them based on the reaction-diffusion model. This thesis also surveys the artificial camouflage materials and systems inspired by camouflage animals.A distributed camouflage system for swarm robotics and smart materials is developed and demonstrated with the `Droplet' swarm robotics platform. The system consists of distributed algorithms of dominant color detection, local pattern decision, global pattern consensus, and pattern formation among the swarm. The distributed camouflage system is tested with both simulation and hardware experiments, and the results show that the system can perform camouflage and is robust and scalable.To continue the development of the artificial camouflage systems, two pattern formation algorithms empowered by deep learning are proposed. The first is a decentralized pattern formation with deep reinforcement learning. The second is a centralized pattern formation with generative adversarial networks. Both of them show that they are able to generate the desired patterns for the systems.To provide an efficient camouflage assessment, a 3D simulation is proposed to apply the camouflage patterns on the to-hide objects, and the simulation is followed by object detectors to report the camouflage scores. The images of camouflaged objects are captured with a set of differently configured cameras and passed through a deep-learning based detector to obtain the detection score. Each camera can be set with the distance and angle relative to the object to evaluate if the camouflage is robust to different perspectives. To sum up, this thesis not only provides centralized and decentralized algorithmic foundations for camouflage materials consisting of large numbers of smart particles, but also presents an efficient pipeline for testing artificial camouflage systems.
590 ▼a School code: 0051.
650 4 ▼a Artificial intelligence.
650 4 ▼a Robotics.
650 4 ▼a Computer science.
690 ▼a 0800
690 ▼a 0771
690 ▼a 0984
71020 ▼a University of Colorado at Boulder. ▼b Computer Science.
7730 ▼t Dissertations Abstracts International ▼g 81-04B.
773 ▼t Dissertation Abstract International
790 ▼a 0051
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15491579 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK