• The Journal of the Korea Contents Association
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• v.11 no.4
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• pp.196-206
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• 2011

The development of projection technology produces series of discussions associated to various form of visual immersing possibilities by the way of projecting image directly to the obscure surface surrounded us. Besides, the significance can be found in terms of that this kind of image projection offers chance to citizens to enjoy high standard images and makes people consider media environment of city. Video art as the digital technology grafts penetrates formative space of city by projecting images. The certain thing about questions how the media has status in city is that media is now not existing for self neither for abstractly and virtual reality is existing in the general appearance of metropolis. This paper treats media environment of city and the meaning of image projection as from of video art in the city. It accesses about the meaning of video form visual art in big city- new reality, the virtual and the real, immersion and interactivity. And media reality of metropolis defines that there is not one major discourse in the gigantic text -metropolis rather they are different discourses each other simultaneously compatible in the gigantic text -metropolis and in fact, they affect each other and interact.

• Journal of the Institute of Convergence Signal Processing
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• v.19 no.3
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• pp.133-138
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• 2018

VR technology is a technology that allows a user to experience virtual reality close to reality by wearing an HMD (Head Mounted Display) device. Recently, as the interest in VR technology increases due to the 4th industrial revolution, various HMD devices are spreading. As a result, VR technology is being rapidly applied to various fields, but many of them still experience VR nausea. VR nausea is caused mainly by visual factors, unlike motion nausea, such as car nausea, sea nausea, and air nausea. Such occurrence of VR nausea may be caused by the characteristics of visual information of VR video contents, the hardware characteristics of HMD devices blocking the external visual field, or the physical specificity of individuals, and it is difficult to distinguish the causes. In this paper, we aim to analyze the characteristics of Visually Induced Motion Nausea images focusing on VR video content, which is the cause of VR nausea, in order to search for minimization of Cyber sickness occurrence.

• Journal of the Korea Computer Graphics Society
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• v.30 no.3
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• pp.133-140
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• 2024

Extended Reality (XR) is an immersive technology that combines the real and virtual worlds and is being actively researched across various industries. This study proposes a method for utilizing the Meta Quest 3, a head-mounted display (HMD) that provides mixed reality, outdoors for the first time by leveraging the GPS information from a smartphone. Augmented virtual objects are positioned using location information and the orientation. Additionally, by using the features of the Meta Quest 3, virtual objects are made to appear alongside the real world, allowing users to interact with virtual objects through hand gestures. This study aims to link present and past spaces by using location information and photographs on the HMD, providing a novel experience of freely traversing time and space.

• Journal of Korea Multimedia Society
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• v.12 no.12
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• pp.1819-1826
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• 2009

To enhance the automatic performance of existing predicting and planning algorithms that require a predefined probability of the states' transition, this paper proposes a multiple sequence generation system. When interacting with unknown environments, a virtual agent needs to decide which action or action order can result in a good state and determine the transition probability based on the current state and the action taken. We describe a sequential behavior generation method motivated from the change in the agent's state in order to help the virtual agent learn how to adapt to unknown environments. In a sequence learning process, the sensed states are grouped by a set of proposed motivation filters in order to reduce the learning computation of the large state space. In order to accomplish a goal with a high payoff, the learning agent makes a decision based on the observation of states' transitions. The proposed multiple sequence behaviors generation system increases the complexity and heightens the automatic planning of the virtual agent for interacting with the dynamic unknown environment. This model was tested in a virtual library to elucidate the process of the system.

• Journal of information and communication convergence engineering
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• v.9 no.6
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• pp.780-784
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• 2011

As the popularization and development of 3D display makes common users easy to experience a solid 3D virtual reality, the demand for virtual reality contents are increasing. In this paper, we propose 3D panorama system using vanishing point locationbased depth map generation method. 3D panorama using depthmap stitching gives an effect that makes users feel staying at real place and looking around nearby circumstances. Also, 3D panorama gives free sight point for both nearby object and remote one and provides solid 3D video.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.536-542
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• 2006

세계 각국은 자국의 문화재를 보존하기 위해 많은 노력을 기울이고 있다. 디지털 복원 기술을 이용하여 문화재를 영구히 보존하려는 시스템 개발 또한 그 중 하나이다. 그러나 문화재는 유형의 물체뿐만 아니라 그에 얽힌 전설과 정신 또한 중요함에도 기존의 시스템들은 형태적인 복원에 치중한 것이 대부분이었다. 본 논문에서는 예술적 상상으로 가상현실 시스템을 이용해 문화콘텐츠 개발을 위한 예술기획 기법을 설명한다. 제안된 기법은 문화원형을 선정하고, 문화적, 예술적 분석과정을 거쳐, 그 결과를 가상현실 시스템에 적용한다. 기획된 내용은 문화콘텐츠 체험 시스템에 적용되었다. 예술기획 기법은 형태적인 측면에서의 문화재뿐만 아니라 그 동안 부재되었던 정신적인 측면 또한, 과제 삼아 문화재 복원의 진정한 의미를 가상현실 시스템에 담도록 하였다.

• The Journal of the Korea Contents Association
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• v.17 no.11
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• pp.342-353
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• 2017

The purpose of this study was to develop and to explore the possibility of the virtual reality based communication training program(VR-CTP) for students with intellectual disabilities. To do this, sentences and dialogue of program were extracted from the National Common Basic Curriculum of Special School and the contents design of program were developed based on the consultation by special education experts. To explore the possibility of applying the VR-CTP, a usability evaluation was conducted with 30 special school teachers and 44 students with intellectual disabilities. The results showed that the VR-CTP had a high level of usability as the special school teachers received 4.23 and the students with intellectual disabilities received 4.44 out of 5. But there is no difference of usability evaluation on the special teachers' school level and teaching experiences without arrangement of school. Also, there is no difference of usability evaluation on the students' IQ, school level, and arrangement of school. As a result of this study, we can draw a conclusion that there is a possibility of applying the VR-CTP to language education for students with intellectual disabilities.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.193-202
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• 2021

Barrier-free is defined as inclusive design of built environments such as building and its facilities that can be approached, entered and used by persons with disabilities. The purpose of this paper develops the content that can identify the physical barriers in the way of movement and provide information associated with barrier-free by using both Geospatial Information and Virtual Reality technology. For this, we conducted literature reviews to find the tackling barriers in terms of barrier-free access and extracted main functions to construct the content. Then, the prototype model which composed of VR engine and 3D geospatial data was implemented, and finally the utilization of the prototype was checked in accordance with barrier-free scenario. The developed prototype model of this study would be contributed to design the barrier-free of public places and access to public buildings for the mobility-disabled people.

• Journal of Satellite, Information and Communications
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• v.11 no.4
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• pp.102-106
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• 2016

With the popularity of smart phones and the help of high-speed wireless communication technology, high-quality multimedia contents have become common in mobile devices. Especially, the release of Oculus Rift opens a new era of virtual reality technology in consumer market. At the same time, 3D audio technology which is currently used to make computer games more realistic will soon be applied to the next generation of mobile phone and expected to offer a more expansive experience than its visual counterpart. This paper surveys concepts, algorithms, and systems for modeling 3D sound virtual environment applications. To do this, we first introduce an important design principle for audio rendering based on physics-based geometric algorithms and multichannel technologies, and introduce an audio rendering pipeline to a scene graph-based virtual reality system and a hardware architecture to model sound propagation.

• Journal of the Korea Fashion and Costume Design Association
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• v.23 no.3
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• pp.11-21
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• 2021

Virtual reality is currently mainly used in games, but is starting to be applied as a variety of media fields, such as broadcasting and film. Virtual reality provides more fun than reality, and can provide new experiences in areas that cannot be experienced in reality due to the constraints of time, space, and environment. In particular, as the social non-contact arena has increased due to COVID-19, it is being applied to education, health, and medical industries. The contents are further expanding into design and military fields. Therefore, the purpose of this study was to observe the change in distribution of load and pressure felt by the body in the flying state while wearing a short pants harness, which are mainly used in the game and entertainment industry. In the experiment, the average pressure in the flying state was measured by attaching a pressure sensor to the back and front of a human mannequin. As a result, it was confirmed that the load concentrated on the waist in the flying state was 44 N, with a pressure of 1353 kPa. The pressure distribution was concentrated in front of the center of gravity, and was measured was at 98% by the pressure sensors, with an average pressure value of approximately 15 kPa, and a pressure value of approximately 12 kPa at the back, which was measured at 67% by the pressure sensor. The results of the load and pressure distribution measurement are presented as fundamental data to improve the wearability and comfort of harnesses in the future, and are compared to actual measured pressure values by analyzing the clothing pressure in flight through virtual wear of harnesses through the CLO 3D program.