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키넥트 센서를 활용한 투명 디스플레이에서의 사용자 위치에 대한 시계 정합 연구
남병욱,이경호,이정민,Nam, Byeong-Wook,Lee, Kyung-Ho,Lee, Jung-Min,Wu, Yuepeng 한국전산구조공학회 2015 한국전산구조공학회논문집 Vol.28 No.6
International Hydrographic Organization(IHO) adopted standard S-100 as the international standard Geographic Information System(GIS) that can be generally used in the maritime sector. Accordingly, the next-generation system to support navigation information based on GIS standard technology has being developed. AR based navigation information system that supported navigation by overlapping navigation information on the CCTV image has currently being developed. In this study, we considered the application of a transparent display as a method to support efficiently this system. When a transparent display applied, the image distortion caused by using a wide-angle lens for parallax secure, and the disc s, and demonstrated the applicability of the technology by developing a prototype. 국제 수로기구(IHO)에서는 해양분야에 범용으로 사용 가능한 국제 GIS 표준으로 S-100 표준규격을 채택하였다. 이에 따라 GIS 표준기술 기반의 차세대 항행정보 지원시스템에 대한 기술이 개발되고 있으며, 현재 CCTV 영상에 항행정보를 덧입혀 항행에 지원할 수 있는 증강현실 기반의 항행정보시스템이 개발되고 있다. 이에 본 연구에서는 이 시스템을 효과적으로 지원할 수 있는 방안으로 투명 디스플레이에서의 적용을 고려하였다. 투명 디스플레이 적용 시 시계확보를 위한 광각 렌즈사용으로 인한 영상왜곡, 사용자 위치에서의 CCTV 영상과 투명 디스플레이 투영 이미지의 불일치로 인하여 사용자가 실제 바라보는데 이질감이 발생하므로, 이를 해결하기 위한 시계정합 및 영상보정 방법에 대한 연구를 진행하였으며, 이를 프로토타입으로 개발하여 기술적용의 가능성을 입증하였다.
남병욱 한국기술교육대학교 2004 論文集 Vol.10 No.2
Mesogenic diol of 4,4'-bis(6-hydroxy hexoxy)biphenyl (BP-6) having flexible chain length of six was synthesized. And Two types of liquid crystalline polyurethanes(MPU-6s) were prepared from BP-6 and 4,4'-diphenylmethane diisocyanate(MDI) by solution polycondensation. Intrinsic viscosities of MPU-6s were in the range of 0.23~0.56 dL/g. The mesomorphic behavior of MPU-6s were investigated by DSC, X-ray, polarizing microscopy and MPU-6s didn't show mesophase but 'virtual liquid crystal' on slow heating and slow cooling. As the molecular weight of MPU-6s decreases, both the crystallization rate and the melting crystallization temperature of MPU-6s increase.
남병욱,김세훈 한국기술교육대학교 2005 論文集 Vol.11 No.1
Two types of copolymers are manufactured by a radical polymerization to develop a material for humid membrane. Each copolymer contains three monomers which have functions to improve humid-resistance, membrane stability, flexibility, impedance and adhesion to the electrode. MDBAB(N,N'-dimethyl-2-methacryloxyethyl -3-bromopropyl ammonium bromide) having a salt form decreases the impedance of the humid membrane and react with amines to produce a cross-linking structure. HEMA(2-hydroxyethyl methacrylate) has a important role which reduces the impedance and increases the adhesion strength to the electrode. The other monomers are DAEMA (N,N-dimethylamino ethyl methacrylate), 4-VP(4-vinyl pyridine) and 2-EHA (2-ethylhexyl acrylate) and all monomers are formulated with several compositions to make a humid membrane. At some composition, we could attain a satisfactory results having good performance and long term durability.
남병욱,황태원 한국기술교육대학교 2003 論文集 Vol.10 No.1
Nanocomposites are used as a new class of polymer system and many researchers have been interested in the clay nanocomposite because of its good mechanical properties, heat resistance, flame retardancy, and barrier property. Modified layered silicates as fillers are dispersed at a nanometer -level within a polymer matrix and then new extraordinary properties are observed. In this study, Polypropylene/clay nanocomposites were prepared in a twin screw extruder by the melt compounding method. In order to increase the compatibility of PP with the clay, the MAPP (MA=2.6%, Mw=49,600), was used as a compatibilizer. And organic modified clays were used as a nanometric filler during the melt extrusion. Through the analysis of SAXS, WAXS, the dispersion of clay was investigated. These nanocomposites compared with a neat Polypropylene/talc composite have high modulus, low toughness, and reduced shrinkage at the stable dispersion.
남병욱,문준영 한국반도체디스플레이기술학회 2018 반도체디스플레이기술학회지 Vol.17 No.1
Wood Polymer Composites(WPC) have attracted significant attention because of ecological and environmental concerns. However, the structure of Wood Flour containing many hydroxyl groups(-OH) reduces the interface adhesion to Phenol-formaldehyde(PF) and it decreases the mechanical properties of the PF/Wood Flour Composites. The present work involves the modification of Wood Flour using silanes reinforced with Phenol-formaldehyde to enhance the mechanical properties of the composites. The spectroscopic properties of the composites were analyzed using FT-IR, XPS(X-ray Photoelectron Spectroscopy) and the mechanical properties i.e., tensile strength, flexural strength and impact strength were studied. We confirmed the modification effect of silanes by spectroscopic analysis, and the mechanical properties of the composites using wood flour modified by silanes were significantly improved.
조선소 블록 정도관리를 위한 경량화 측정 장비 및 증강현실 기반의 스마트 정도관리 시스템 개발
남병욱,이경호,이원혁,이재덕,황호진 한국전산구조공학회 2019 한국전산구조공학회논문집 Vol.32 No.1
In order to increase the production efficiency of the ship and shorten the production cycle, it is important to evaluate the accuracy of the ship components efficiently during the drying cycle. The accuracy control of the block is important for shortening the ship process, reducing the cost, and improving the accuracy of the ship. Some systems have been developed and used mainly in large shipyards, but in some cases, they are measured and managed using conventional measuring instruments such as tape measure and beam, optical instruments as optical equipment, In order to perform accuracy control, these tools and equipment as well as equipment for recording measurement data and paper drawings for measuring the measurement position are inevitably combined. The measured results are managed by the accuracy control system through manual input or recording device. In this case, the measurement result is influenced by the work environment and the skill level of the worker. Also, in the measurement result management side, there are a human error about the lack of the measurement result creation, the lack of the management sheet management, And costs are lost in terms of efficiency due to consumption. The purpose of this study is to improve the working environment in the existing accuracy management process by using the augmented reality technology to visualize the measurement information on the actual block and to obtain the measurement information And a smart management system based on augmented reality that can effectively manage the accuracy management data through interworking with measurement equipment. We confirmed the applicability of the proposed system to the accuracy control through the prototype implementation.