• Title/Summary/Keyword: HMD(Head Mount Display)

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Development of Training Instruments on Visual functions using HMD type Display and Investigation of its Demand

  • Lee, Seong Jae;Oh, Se Hyun
    • International Journal of Advanced Culture Technology
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    • v.6 no.3
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    • pp.201-210
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    • 2018
  • We constructed 3-D images by HMD (Head Mount Display) type and polarization technique through which a training instrument of binocular function based on clinical vision therapy was developed and investigated its demand. To design the instrument that performs Test- Diagnosis - (Prescription) - Training - Treatment we provided a customized training method for the trainers using optical IT instruments of binocular test. Through the contents and the instruments of the vision therapy technology developed in this work we can replace the current vision test instruments to those costing 60% lower price in eye clinics and eye glasses shops. By replacing the existing vision test instruments it is possible to create a new market of the vision therapy in vision training instruments.

Flight Training Efficiency about Basic Aviation Training Device (BATD) Using VR Head Mount Display (VR Head Mount Display를 이용한 기초 모의비행 훈련장치 조종 훈련 효율 연구)

  • Jeong, Gu Moon;Kim, Mu Kyeom;Nguyen, LV Thang;Lee, Jae-Woo
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.26 no.2
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    • pp.1-7
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    • 2018
  • In this paper, pilot flight training procedure of VFR (Visual Flight Rule) flight procedure was investigated through basic aviation training device (BATD) using VR HMD (Virtual Reality Head Mount Display). In order to evaluate the efficiency of the pilot training, the experimental pilot group was divided according to the similar piloting ability, then same VFR flight procedure was carried out using both the VR BATD and the conventionl BATD. The comparison of the X, Y and Z position of the aircraft from the extracted flight data was conducted. As a result, it was confirmed that the VR BATD shows better steering training efficiency tendency than the conventional BATD.

Use of Mini-maps for Detection and Visualization of Surrounding Risk Factors of Mobile Virtual Reality (미니맵을 사용한 모바일 VR 사용자 주변 위험요소 시각화 연구)

  • Kim, Jin;Park, Jun
    • Journal of the Korea Computer Graphics Society
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    • v.22 no.5
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    • pp.49-56
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    • 2016
  • Mobile Virtual Reality Head Mount Displays such as Google Cardboard and Samsung Gear VR are being released, as well as PC-based VR HMDs such as Oculus Rift and HTC Vive. However, when the user wears HMD, it hides the external view of the user. Therefore, it may happen that the user is struck by the surrounding objects such as furniture, and there is no definite solution to this problem. In this paper, we propose a method to reduce the risk of injuries by visualizing the location and information of obstacles scanned by using a RGB-D camera.

Clinical Implementation of an Eye Fixing and Monitoring System with Head Mount Display (Head Mount Display (HMD)를 이용한 안구의 고정 및 감시장치의 임상사용 가능성 확인)

  • Ko, Young-Eun;Park, Seoung-HO;Yi, Byong-Yong;Ahn, Seung-Do;Lim, Sang-Wook;Lee, Sang-Wook;Shin, Seong-Soo;Kim, Jong-Hoon;Choi, Eun-Kyung;Noh, Young-Ju
    • Progress in Medical Physics
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    • v.18 no.1
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    • pp.1-6
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    • 2007
  • A system to non-invasively fix and monitor eye by a head mounted display (HMD) with a CCD camera for stereotactic radiotherapy (SRS) of uveal melanoma has been developed and implemented clinically. The eye fixing and monitoring system consists of a HMD showing patient a screen for fixing eyeball, a CCD camera monitoring patient's eyeball, and an immobilization mask. At flrst, patient's head was immobilized with a mask. Then, patient was Instructed to wear HMD, to which CCD camera was attached, on the mask and see the given reference point on its screen. While patient stared at the given point in order to fix eyeball, the camera monitored Its motion. Four volunteers and one patient of uveal melanoma for SRS came into this study. For the volunteers, setup errors and the motion of eyeball were analyzed. For the patient, CT scans were peformed, with patient's wearing HMD and fixing the eye to the given point. To treat patient under the same condition, daily CT scans were also peformed before every treatment and the motion of lens was compared to the planning CT Setup errors for four volunteers were within 1mm and the motion of eyeball was fixed within the clinically acceptable ranges. For the patient with uveal melanoma, the motion of lens was fixed within 2mm from daily CT scans. An eye fixing and monitoring system allowed Immobilizing patient as well as monitoring eyeball and was successfully implemented in the treatment of uveal melanoma for SRS.

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Mixed Reality Technology Using HMD (HMD 기반 혼합현실 기술)

  • Kim, H.S.;Jeon, J.K.;Eom, G.M.;Kim, S.J.
    • Electronics and Telecommunications Trends
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    • v.32 no.3
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    • pp.20-27
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    • 2017
  • 최근 많은 종류의 HMD(Head mount display) 출시로 전시장 등 다양한 장소에서 가상현실을 체험할 수 있고, 포켓몬고와 같은 게임을 스마트폰을 통해 사용할 수 있게 됨에 따라 가상현실과 증강현실이 사용자들에게 일반화된 개념이 되어가고 있다. 이와 함께 마이크로소프트 홀로렌즈의 개발자 버전 출시를 통해 현실을 기반으로 가상현실과 같은 몰입감의 혼합현실을 제공하는 기술이 단순 컨셉트가 아니라 현실의 서비스로 실현되어 가고 있다. 본고에서는 가상현실, 증강현실의 일부 또는 독립적인 개념으로 분류되는 혼합현실, 특히 HMD 기반의 혼합현실 개념과 동향을 살펴보고, 한국전자통신연구원에서 개발된 HMD 기반 혼합현실 기술을 소개하고자 한다.

The Impact of Object Density on Motion Simulation in Virtual Space (가상공간에서 오브젝트의 밀도가 이동시뮬레이션에 미치는 영향)

  • Yoong, Hayoung;Koo, Jihun
    • Journal of Korea Game Society
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    • v.17 no.4
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    • pp.55-62
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    • 2017
  • In this study, motion simulation of Walk-through was evaluated with HMD(Head Mounted Display). More Specifically, we examined the changes of the degree of object density placed around virtual space on psychological moving distance, moving speed, and moving time. The results were as follows. First, the difference between the experimental conditions(low density, Medium density, High density) was significant. Second, as the density of the surrounding objects increased, the average point of moving time, moving speed, and moving distance rose compared to the basic conditions. Third, it was found that the surrounding objects improved the sense of time, speed and distance in motion simulation in virtual space.

Ultra Precision Machining Characteristics of PMMA in HMD optical system (HMD 광학계용 PMMA의 초정밀 가공 특성)

  • Yang J.S.;Kim G.H.;Yang S.C.;Lee I.J.;Kim M.S.;Lee D.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.1566-1570
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    • 2005
  • The aspherical lenses are used as optical lens of HMD optical system. The optimum cutting condition of PMMA lens sample with ultra precision SPDT, the diamond tool nose radius, the cutting speed, the feed rate, the depth of cut, and cutting fluid type are found. The demanded surface roughness 10 nm Ra, aspherical form error $1.0\;\mu{m}$ P-V for aspherical lens of optical data storage device are satisfied.

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Assessment of Pilot Training Effectiveness of VR HMD based Flight Training Device (VR HMD 기반 모의 비행 훈련 장치의 조종사 훈련 효과 평가)

  • Jeong, Gu Moon;LEE, YOUNGJAE;Lee, Chi ho;Kim, Mu Kyeom;Lee, Jae-Woo
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.26 no.4
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    • pp.129-141
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    • 2018
  • In this paper, two different flight training devices were constructed to verify the effectiveness of a pilot training system based on a Virtual Reality Head Mount Display. VFR Flight Procedure and IFR Flight Procedure were conducted by high level pilots with Commercial Pilot Licence. Flight data and pilot's visual data for each flight procedure were extracted, compared and analyzed with two training systems. Finally, the effectiveness of the training systems based on the VR HMD was demonstrated by assessing the given mission and the flight results.

Study on Virtual Reality (VR) Operating System Prototype (가상환경(VR) 운영체제 프로토타입 연구)

  • Kim, Eunsol;Kim, Jiyeon;Yoo, Eunjin;Park, Taejung
    • Journal of Broadcast Engineering
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    • v.22 no.1
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    • pp.87-94
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    • 2017
  • This paper presents a prototype for virtual reality operating system (VR OS) concept with head mount display (HMD) and hand gesture recognition technology based on game engine (Unity3D). We have designed and implemented simple multitasking thread mechanism constructed on the realtime environment provided by Unity3D game engine. Our virtual reality operating system receives user input from the hand gesture recognition device (Leap Motion) to simulate mouse and keyboard and provides output via head mount display (Oculus Rift DK2). As a result, our system provides users with more broad and immersive work environment by implementing 360 degree work space.

Analysis of a Passivation Layer for Full Switching of LCOS Panel (LCOS의 Full On을 위한 Passivation Layer 영향분석)

  • 강기형;이유진;송남철;김민석;황현하;조철식
    • Proceedings of the Optical Society of Korea Conference
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    • 2000.08a
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    • pp.230-231
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    • 2000
  • 동전만한 작은 크기의 화면을 원하는 크기로 확대해서 보여주는 micro-display는 부피가 작고 가벼운 장점으로 인해 HMD(Head Mount Display)에 적용되었으나, 최근들어 TV나 monitor등에 확대 적용되고 있다. 이러한 micro-display중 LCOS는 최근 가장 활발히 연구되고 있는 micro-display이다$^{(1).(4)}$ . LCOS는 Liquid Crystal On Silicon의 약어로 반도체 제조에 사용되는 silicon wafer위에 액정소자를 얹어 제작하는 것이다. LCOS는 액정화면을 구동하기 위한 silicon back-plate의 반도체 기술, 화상을 표시하는 액정소자 기술, 표시된 화면을 사용자가 볼 수 있도록 투사하는 조명/투사광학 기술등이 집적화된 display이다. LCOS의 최적 특성을 위해서는 각 부분의 성능 최적화뿐만 아니라 각 기술들의 상호 연결 및 접목이 중요하다. (중략)

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