• Journal of information and communication convergence engineering
• /
• 제17권3호
• /
• pp.205-212
• /
• 2019

Motion tracking and localization devices are an important building block of motion tracking systems in a virtual reality (VR) environment. This study is about improving the accuracy of motion and location for enhancing user immersion in experience type VR environment to position tracking technique. In this study, we propose and test a design of such a device. The module data test of the attitude and heading reference system shows that the implementation with the MPU-9250 sensor is successful and adequate to be used with short operation time. We consider various sensor hardware dependencies of VR, and compare various correction methods and filtering methods to lower the motion to photon (MTP) time that user movement is fully reflected on the display using sensor devices. The Kalman filter is used to combine the accelerometer with the gyroscope in the sensing unit.

• 대한방사선기술학회지:방사선기술과학
• /
• 제44권6호
• /
• pp.591-597
• /
• 2021

In the present study, we developed virtual reality education contents for radiation generator on radiation education field. The radiation generator was divided by module and even the X-ray exposure part was manufactured in detail for designing 3D models. The mechanical details of the X-ray exposure part, the function of adjusting field size of the X-ray, the function of moving the exposure part, and the demonstrating the principle of the X-ray tube were applied. For developing VR contents, the Unreal Engine was used. To evaluate the usefulness of virtual reality content, we used t-test by SPSS. The group used the simulator showed significantly higher levels of understanding of X-ray generation, X-ray irradiation unit composition, irradiation field size adjustment, irradiation unit position adjustment, and overall composition and function. We believe that this VR contents will be used well with radiation safe environment.

• International Journal of Internet, Broadcasting and Communication
• /
• 제15권4호
• /
• pp.149-159
• /
• 2023

The Republic of Korea (ROK) Army is developing the Army Synthetic Battlefield Training System and plans divisional-level Live, Virtual, and Constructive (LVC) integrated training. This study proposes a plan to apply VR/AR/MR (Virtual Reality/Augmented Reality/Mixed Reality) technology to LVC integrated training systems to enhance the efficiency and effectiveness of future LVC integrated training. The study investigated immersive military training systems in the ROK and advanced countries. As a result, we confirm that immersive technology can significantly improve the efficiency and effectiveness of military training. Accordingly, we review the key technologies required for building a defense training system with immersive features and propose training subjects that can be enhanced in effectiveness and efficiency when built with an immersive approach. We also propose a plan to apply immersive technology to the Live, Virtual, and Constructive systems for the development of future LVC integrated training system.

• International Journal of Internet, Broadcasting and Communication
• /
• 제15권4호
• /
• pp.172-177
• /
• 2023

This study explores the feasibility and potential of using virtual reality (VR) technology to enhance the museum viewing experience through digital media. In an increasingly digital world, museums face the challenge of adapting to changing visitor expectations. This study explores the integration of virtual reality and digital media as a means to engage, educate, and attract museum visitors in a novel, immersive way. By analyzing its advantages, challenges, and practical implications, this study aims to elucidate the feasibility of this transformative approach.

• Journal of Multimedia Information System
• /
• 제4권3호
• /
• pp.151-156
• /
• 2017

As Internet services have spread centering on mobiles, diverse services used in everyday life have become mobile services. For humans, residential spaces have significant implications as physical and psychological environments. Therefore, being provided with accurate information on the room that must be sought to find out the residential space wanted by the user can be said to be an important element of real estate apps. However, when buying real estate, people prefer searching for information using mobiles and verifying the information by visiting the real estate firsthand due to increases in damage due to false offerings. This way approaches as inconvenience in cases where the buyer lives far away or if the conditions are not suitable. Therefore, in the present study, a 'room finding application using VR' was designed and implemented using virtual reality (VR) used for diverse purposes. VR is a technology that provides the user with the sense of presence as if the user is actually present in the space. It was used in the present study as a means to provide more accurate information. The use of the application designed and implemented in the present study is expected to reduce false offerings information at least slightly so that users can be provided with more accurate information on the real estate of interest.

• Current Optics and Photonics
• /
• 제6권4호
• /
• pp.392-399
• /
• 2022

Light-measuring devices (LMDs) are frequently used to measure luminance and color coordinates of displays. However, it is very difficult to use a conventional LMD for measuring the optical properties of virtual-reality (VR) devices with a wide field of view (FOV), because of their confined spaces where the entrance pupil of a LMD is located. In this paper, a new LMD that can measure the optical properties of wide-FOV VR devices, without physical conflict with the goggles of the VR device, is proposed. The LMD is designed to fully satisfy the requirements of IEC 63145-20-10, and a pivot-point correction method for the LMD is applied to improve its accuracy. To show the feasibility of the developed LMD and the correction method, seven VR devices with wide FOV are measured with it. From the results, all of them are successfully measured without any physical conflict, and a comparison to their nominal values shows that the FOVs have been properly measured.

• 한국컴퓨터그래픽스학회논문지
• /
• 제2권1호
• /
• pp.86-92
• /
• 1996

전세계적으로 초고속 통신망 구축이 활성화됨에 따라 네트워크에서의 멀티미디어 서비스가 현실화되어 가고 있다. 인터넷의 보급과 함께 앞으로 네트워크 상에서의 비지니스가 일반화될 것이며 그래픽스 및 애니메이션을 이용한 텔레마케팅 시스템 개발이 활성화되리라고 본다. 멀티미디어 텔레마케팅 시스템 개발에 있어서 이러한 3차원 고급 이미지로 구성한 VR(Virtual Reality)을 응용하면 사용자에게 보다 첨단의 서비스를 제공할 수 있다. 본 논문에서는 통신망에서의 멀티미디어 텔레마케팅을 위한 클라이언트/서버 시스템과 이를 기반으로 하여 각종 응용서비스를 개발하는데 이용할 사용자 인터페이스로서의 대화형 VR 저작도구의 구성에 대해 기술한다.

• International Journal of Internet, Broadcasting and Communication
• /
• 제15권4호
• /
• pp.191-198
• /
• 2023

In recent years, we have witnessed a growing popularity of virtual reality (VR) technology. Understanding the factors that contribute to a comfortable VR viewing experience is crucial for its successful implementation. This study specifically explored the role of gender in determining the ideal viewing distance for VR animation. To do so, we enlisted 100 participants, comprising 41 males and 59 females, and had them engage in a VR animation viewing task, during which we recorded their preferred viewing distances. Our findings revealed that there was no significant distinction between males and females regarding their favored VR animation viewing distances. These results suggest that when creating VR content, gender may not be a noteworthy factor to take into account when determining the optimal viewing distances for a comfortable experience.

• 한국컴퓨터게임학회논문지
• /
• 제31권4호
• /
• pp.197-203
• /
• 2018

최근 VR(Virtual Reality)에 대한 사람들의 관심이 높아짐에 따라 주변기기 또한 많은 발전이 이루어졌다. VR 환경에서 그 환경내의 사물과 인터랙션 할 수 있는 여러 인터페이스 장치와 룸 단위의 스캐닝을 통한 VR 환경 구성까지 많은 연구가 이루어지고 있다. 현재 VR의 동향을 보았을 때 가정에서의 VR 활용법은 여러 햅틱 인터페이스를 이용하여 VR 환경 내에 구성된 사물들과 인터랙션 하는 것이 많으며 룸 스캐닝을 이용한 방법으로 공간상의 제약을 어느 정도 벗어나기도 하며, 트레킹 장비를 이용하여 실제 사물들과의 인터랙션을 하기도 한다. 3D 프린터의 발전으로 상업용 3D 프린터와 가정용 3D 프린터의 보급이 활성화 되었으며, 3D 프린팅 업체 또는 가정에서 쉽게 3D 프린터를 통해 자신이 원하는 모형을 만들 수 있게 되었다. 위 두 가지를 고려하였을 때 VR 환경에서 사람들이 쉽게 만들 수 있는 모형을 가지고 직접 인터랙션을 할 때 사람들이 느끼는 모형의 물체감과 VR 환경상에서 구성된 모형의 물체감 사이의 차이점에 대한 연구가 필요하다고 느껴진다. 따라서 이 논문에서는 3D 프린터로 제작한 사물을 VR 공간 내에 구현하고 실제로 구현된 그 사물과의 사용자 테스트를 통해 실제 사물과 인터랙션 할 때와 다른 일반 인터랙션 장비를 사용할 때의 차이에 대한 연구를 하고자 한다.

• 디지털콘텐츠학회 논문지
• /
• 제18권3호
• /
• pp.429-434
• /
• 2017

최근 가상현실 기술은 콘텐츠는 물론 콘텐츠에 적합한 다양한 디바이스개발로 급성장하고 있다. IT업체 들은 모바일 산업 시장의 차후 시장으로 가상현실을 바라보고 있으며, 관련 하드웨어 개발 및 연구에 집중하고 있다. 또한 가상현실의 디바이스가 활발하게 개발됨에 따라 가상현실을 기반으로 하는 미디어 콘텐츠들 또한 활발한 연구개발이 이루어 질 것이다. 그러나 가상현실을 체험하면서 발생하는 멀미감은 해결해야할 과제로 남아있다. 본 연구에서는 사이버멀미의 원인을 고찰하고 사이버멀미와 반사성 안구운동의 관계를 분석하여 콘텐츠제작과정에서 멀미를 완화하는 방안을 제안한다. 또한 제안한 방법에 대한 효과를 입증할 수 있는 실험 및 분석을 한다.