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Strategy for Creating AR Applications in Static and Dynamic Environments Using SLAM-and Marker Detector-Based Tracking

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Computer Modeling in Engineering & Sciences 2022年第4期131卷 529-549页

作者： Chanho park Hyunwoo Cho sangheon park Sung-Uk Jung Suwon Lee Electronics and Telecommunications Research Institute Daejeon34129Korea Graduate School of Engineering The University of TokyoTokyo113-0033Japan School of Computer Science and The Research Institute of Natural Science Gyeongsang National UniversityJinju-si52828Korea

Recently,simultaneous localization and mapping(SLAM)has received considerable attention in augmented reality(AR)libraries and *** the assumption of scene rigidity is common in most visual SLAMs,this assumption limits the possibilities of AR applications in various real-world *** this paper,we propose a new tracking system that integrates SLAMwith amarker detection module for real-time AR applications in static and dynamic *** the proposed system assumes that the marker is movable,SLAM performs tracking andmappingof the static scene except for themarker,andthemarker detector estimates the 3-dimensional pose of the marker attached to the dynamic *** can place SLAM maps,cameras,and dynamic objects(markers)on the same coordinate system,and we can also accurately augment AR resources in real-time on both the static scene and dynamic objects ***,having a static map of the scene in advance has the advantage of being able to performtracking of static and dynamic environments with mapping *** this paper,we evaluate whether the proposed tracking systemis suitable for AR applications and describe a strategy for creating AR applications in static and dynamic environments with a demonstration.

关键词： Augmented reality SLAM marker tracking coordinate system

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Strain-tunable optical microlens arrays with deformable wrinkles for spatially coordinated image projection on a security substrate

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Microsystems & Nanoengineering 2022年第5期8卷 225-237页

作者： In Sik Choi Seongho park sangheon Jeon Young Woo Kwon Rowoon park Robert A.Taylor Kwangseuk Kyhm Suck Won Hong Department of Cogno-Mechatronics Engineering Department of Optics and Mechatronics EngineeringPusan National UniversityBusan 46241Republic of Korea Research Center for Dielectric and Advanced Matter Physics Pusan National UniversityBusan 46241Republic of Korea Department of Physics University of OxfordOxford OX13PUUK Department of Nano-Fusion Technology Pusan National UniversityBusan 46241Republic of Korea

As a new concept in materials design,a variety of strategies have been developed to fabricate optical microlens arrays(MLAs)that enable the miniaturization of optical systems on the micro/nanoscale to improve their characteristic performance with unique optical *** this paper,we introduce a cost-effective and facile fabrication process on a large scale up to~15 inches via sequential lithographic methods to produce thin and deformable hexagonally arranged MLAs consisting of polydimethylsiloxane(PDMS).Simple employment of oxygen plasma treatment on the prestrained MLAs effectively harnessed the spontaneous formation of highly uniform nanowrinkled structures all over the surface of the elastomeric *** strain-controlled tunability,unexpected optical diffraction patterns were characterized by the interference combination effect of the microlens and deformable ***,the hierarchically structured MLAs presented here have the potential to produce desirable spatial arrangements,which may provide easily accessible opportunities to realize microlens-based technology by tunable focal lengths for more advanced micro-optical devices and imaging projection elements on unconventional security substrates.

关键词： projection arrays spatially

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