• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2022.06a
• /
• pp.1-3
• /
• 2022

코로나 19 팬데믹으로 인한 4차 산업혁명이 앞당겨지고 초현실, 초실감, 초연결 사회 등의 키워드가 대두되고 언택트(Untact) 시대가 일상생활에 불가항력적으로 접목되면서 몰입감과 흥미성, 유희성을 목적으로 한 콘텐츠들이 다양하게 활성화되었다. 특히, 메타버스(Metaverse) 플랫폼이 빠르게 진화하면서 물리적 현실과 디지털 가상성을 융합한 다중 사용자에게 다양한 경험이 가능한 서비스가 주목받고 있다. 메타버스는 다중 사용자 플랫폼에서 원활한 커뮤니케이션과 대규모 멀티플레이가 가능한 온라인 비디오 게임, 오픈 게임 월드, AR 협업 공간과 호환되는 사회적, 몰입감이 있는 VR(Virtual Reality) 플랫폼 서비스 중 하나이다. 우리는 메타버스 플랫폼 개발 시 필요로 하는 요소기술 및 3D 데이터 획득을 통한 VR 콘텐츠를 설계하고 구현하고자 한다. 1) 콘텐츠 시나리오 및 사용자 인터랙션 설계; 2) 볼류메트릭 캡처를 활용한 실사 기반의 동적(Dynamic) 데이터 생성; 3) 컴퓨터 그래픽 기반 가상공간 설계 및 정적(Static)데이터 요소기술 개발; 4) 가상 현실 공간 데이터와 볼류메트릭 캡처의 실사 데이터 정합; 5) 공간 데이터 시각화 생성 및 모듈형 공간 이동 제어 기능 개발; 최종적으로 6) VR 환경에서의 콘텐츠 구현을 목표로 한다.

• Journal of the Korea Computer Graphics Society
• /
• v.25 no.3
• /
• pp.11-20
• /
• 2019

In this study, a novel virtual reality (VR) experience environment is proposed for enabling walking adaptation of visually impaired people. The core of proposed VR environment is based on immersive walking interactions and deep learning based braille blocks recognition. To provide a realistic walking experience from the perspective of visually impaired people, a tracker-based walking process is designed for determining the walking state by detecting marching in place, and a controller-based VR white cane is developed that serves as the walking assistance tool for visually impaired people. Additionally, a learning model is developed for conducting comprehensive decision-making by recognizing and responding to braille blocks situated on roads that are followed during the course of directions provided by the VR white cane. Based on the same, a VR application comprising an outdoor urban environment is designed for analyzing the VR walking environment experience. An experimental survey and performance analysis were also conducted for the participants. Obtained results corroborate that the proposed VR walking environment provides a presence of high-level walking experience from the perspective of visually impaired people. Furthermore, the results verify that the proposed learning algorithm and process can recognize braille blocks situated on sidewalks and roadways with high accuracy.

• Journal of Industrial Convergence
• /
• v.20 no.4
• /
• pp.47-55
• /
• 2022

The study was conducted to identify the effectiveness of nursing skills practice using VR(Virtual Reality) on competency and confidence in nursing skills, learning self-efficacy, and satisfaction of nursing students. This study used a randomized controlled trial design. The 35 patients in the experimental group took nursing skills practice using VR and The 35 patients in the control group took fundamental nursing skills practice. The data were conducted on confidence in nursing skills, learning self-efficacy, satisfaction, and nursing skills' competency. The collected data were analyzed using the SPSS WIN 23.0 program. As a result of the study, there were no significant differences between the experimental and control groups in competency and confidence in nursing skills, learning self-efficacy, and satisfaction. However, confidence in nursing skills and learning self-efficacy increased after practice in both groups. The results indicate that nursing skills practice using VR was effective in improving nursing skills.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.11 no.10
• /
• pp.1835-1844
• /
• 2007

Recently there have been some positive evidences on the effects of learning in a virtual environment. However, most of these educational VR systems were not deeply considered in the design of drawing a learner's attention on lesson contents, which would help enhance retained memory. Hence, a study was conducted to measure 17 subjects' attention states using EEC, ECG, GSR, and eye-tracking and their behaviors while they were given guided search task or exploration task in a virtual environment consisting of five major events. It also analyzed the subject's remembered items after their VR experiences using a surrey. This paper Int describes an overview of the ocean virtual environment used in this study, and it then explains the experimental design, apparatus, and method. It will also discuss the results by a detail analysis (in a whole VR session as well as event-related 10-second 33 sub-sessions) with the subjects' attention states and their retained memory after the learning.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.12
• /
• pp.90-98
• /
• 2018

An efficient R&D Methodology with minimized development period and cost needs to be developed due to advanced performance requirements of weapon systems. This will require the performance of logistics support analysis and design verification in the development stages of weapon systems through VR technology. VR technology has been applied to the Integrated Logistics Support (ILS) process as a part of collaborative system. In this study, we propose a development and application plan of ILS based on VR technology during the total life cycle of weapon systems. Moreover Digital Maintenance System (DMS) is introduced as a VR tool with key functions. finally, applications and improvement topics of DMS are suggested for use in ILS development.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.16 no.6
• /
• pp.1249-1254
• /
• 2021

Computing technology and networking technology in the era of the 4th industrial revolution are rapidly evolving into an intelligent information society. AR, VR, and MR technologies, which are dual immersive media fields, are being applied in many convergence technologies, especially! The development of the health and healthcare field is actively progressing. In the field of health and healthcare, there are many problems due to aging of the population, increase in chronic progress, lack of infrastructure, and lack of professional manpower. services in the field are adopted. Therefore, this study applies cognitive evaluation through a computing system to the mild cognitive impairment, designs and develops a cognitive judgment platform using augmented reality based on the cognitive judgment technology system design, and integrates AI and BigData-based intelligent cognitive rehabilitation in the future. It is used as basic data for service platform development.

• The KIPS Transactions:PartA
• /
• v.15A no.3
• /
• pp.141-149
• /
• 2008

In this research we present a novel method which combines and visualizes the design model and the FDM-based simulation result of solidification. Moreover we employ VR displays and visualize stereoscopic images to provide an effective analysis environment. First we reconstruct the solidification simulation result to a rectangular mesh model using a conventional simulation software. Then each point color of the reconstructed model represents a temperature value of its position. Next we map the two models by finding the nearest point of the reconstructed model for each point of the design model and then assign the point color of the design model as that of the reconstructed model. Before this mapping we apply mesh subdivision because the design model is composed of minimum number of points and that makes the point distribution of the design model not uniform compared with the reconstructed model. In this process the original shape is preserved in the manner that points are added to the mesh edge which length is longer than a predefined threshold value. The implemented system visualizes the solidification simulation data on the design model, which allows the user to understand the object geometry precisely. The immersive and realistic working environment constructed with use of VR display can support the user to discover the defect occurrence faster and more effectively.

• The Journal of the Korea Contents Association
• /
• v.17 no.2
• /
• pp.623-636
• /
• 2017

The use of virtual reality(VR)-based interventions for students with autism spectrum disorders(ASD) has received special attention as evidence-based practices for its feasiblity, practicality, and appropriateness. However, there is little research to investigate the effects of VR-based intervention for students with ASD in Korea. This study identifies and reviews studies applying VR-based interventions. In total, 13 experimental studies were found that examine the effects of VR interventions published from 1990 to 2016. The selected studies were analyzed by 6 variables including publication year, participants, research design, independent variable, dependent variable, and outcome. The results of this study showed the feasibility of the implementing VR-based interventions in various age group students with ASD. In addition, the utilization of VR techniques was particularly effective in improving a wide range of social communication skills including facial recognition, empathy, joint attention, understanding social context, and resolving issues due to limited cognitive abilities. Several recommendations for the future study on VR-based intervention for students with ASD such as interdisciplinary approach to VR-based interventions, support needs regarding characteristics of ASD, generalization and maintenance of acquired technology, and consideration for participants' cultural background. were discussed.

• Korean Journal of Computational Design and Engineering
• /
• v.17 no.3
• /
• pp.175-187
• /
• 2012

The BIM simulation systems involve inefficient aspects in delivering real world circumstances because they are operated in the virtual reality (VR) environment without representing the job-site operations. Differently from VR, augmented reality (AR) enhances the reflection of job-site reality to virtual environment. AR influences architecture, design and construction. This reality replaces or merges with the normal physical world and it can be tailored to enhance comprehension for specific design and construction activities. The main objective of this research is to develop an AR-based decision support system for free-form buildings design/construction/maintenance processes. Haewoojae, a free-form housing building built in Seoul area is identified as a model building to generate the system. Seventeen engineers, who are masters or doctorate graduate students at the S university in Seoul and have been working in the Korean construction industry for more than 10 years are invited to validate the system's appropriateness and usability in comparison with its development objectives.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.6 no.1
• /
• pp.1-9
• /
• 2000

The paper describes system design of next-generation Ship Simulator using Virtual Reality (VRSS), well known as human-computer interaction. VRSS system is required to have special condition that comprises multiple user participants such as captain, officer, pilot, and quartermaster. To cope with that condition, core technologies were explored and proposed multi-networking system with broker server. The evaluation of the proposed system was done with PC-based immersion-type VR device, constituted with HMD (Head Mounted Display), Head Tracking Sensor, Puck, Headphone, and Microphone. Using the VR device, assessment test was carried out in a virtual bridge with 3D objects, which are created by VRML (Virtual Reality Model Language) program. As results of tests, it is shown that the cybernetic 3D objects were act as if real things in a real ship's bridge. Therefore, interesting interaction with participants can be obtained in the system, Thus, we found that the proposed system architecture can be applicable to VRSS system construction.