• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 1부
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• pp.55-58
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• 2008

산업 제품을 디자인하는 디자이너들은 CAD(Computer Aided Design)과 같은 방법을 사용하여 새로운 디자인을 만들어내고, 이를 적용한 가상의 3D 모델을 통해 살펴본다. 이 방법은 직접 손으로 도면을 그리고 단순히 한쪽 면만 살펴볼 수 있었던 기존의 방법에 비해서 컴퓨터로 인한 자동화와 다양한 각도에서 제품에 적용된 새로운 디자인을 살펴봄으로써 시간과 비용을 절감할 수 있다. 이에 우리는 앞서 언급한 디자인 방법에 Augmented Reality와 Rapid Prototyping의 개념을 더해 현실적이고 인터랙티브한 산업제품의 디자인 방법을 고안하였다. 이것은 스티로폼과 같은 재질로 만들어진 mockup을 조립하여 만들고, 3D 모델의 컬러, 재질, 버튼 등의 인터페이스 요소와 실제 제품을 조작하는 것과 같은 인터랙티브한 요소들을 적용시킴으로써 제품을 디자인할 수 있는 증강현실기반 시스템이다.

• 한국전자통신학회논문지
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• 제15권5호
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• pp.939-948
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• 2020

가상현실 기술을 농업 기술 교육에 접목하려는 많은 노력이 이루어지고 있으며, 농기계 교육과 같은 직접적인 교육뿐만 아니라 게임을 이용한 간접 교육에도 관심이 증가하고 있다. 가상현실에서 핵심적인 기술은 사용자가 실제와 같이 느낄 수 있게 대상을 모델링하는 것이다. 농장에서 재배하는 농작물은 농장의 환경에 따라 동일한 영향을 받는다. 또한, 농작물은 각각 독립적인 특성도 가지게 된다. 본 논문에서는 농작물 모델링의 이러한 특성을 반영하여 NPC 형태로 모델링하는 방법을 제안한다. 제안하는 방법에서는 개별 농작물이 날씨와 농장의 특성을 반영하는 방법과 독립적인 특성을 반영하는 방법을 구현한다. 구현 결과는 제안하는 방법이 간단한 알고리즘을 사용하지만 농작물을 매우 사실적으로 표현하는 것을 보여준다.

• 한국멀티미디어학회논문지
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• 제21권10호
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• pp.1162-1170
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• 2018

This paper presents an augmented reality system for multiple users. The proposed system performs ar image-based pose estimation of users and pose of each user is shared with other uses via a network server. For camera-based pose estimation, we install multiple markers in a pre-determined space and select the marker with the best appearance. The marker is detected by corner point detection and for robust pose estimation. the marker's corner points are tracked by optical flow tracking algorithm. Experimental results show that the proposed system successfully provides an augmented reality application to multiple users even when users are rapidly moving and some of markers are occluded by users.

• 한국멀티미디어학회논문지
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• 제23권3호
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• pp.483-489
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• 2020

Advancements in mobile phone hardware and network connectivity made communication becoming more and more convenient. Compared to pictures or texts, people prefer to share videos to convey information. For intentions clearer, the way to annotating comments directly on the video are quite important issues. Recently there have been many attempts to make annotations on video. These previous works have many limitations that do not support user-defined handwritten annotations or annotating on local video. In this sense, we propose an augmented reality based real-time video annotation system which allowed users to make any annotations directly on the video freely. The contribution of this work is the development of a real-time video annotation system based on recent augmented reality platforms that not only enables annotating drawing geometry shape on video in real-time but also drastically reduces the production costs. For practical use, we proposed a real-time collaboration system based on the proposed annotation method. Experimental results show that the proposed annotation method meets the requirements of real-time, accuracy and robustness of the collaboration system.

• 한국컴퓨터그래픽스학회논문지
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• 제13권2호
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• pp.1-15
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• 2007

본 논문에서는 혼합현실 기술과 관련된 국내 외의 최근 연구개발 동향과 사례들을 살펴보고, 사용된 기술내용과 기술적 한계 극복을 위한 발전 방향을 논한다. 혼합현실 기술은 실 세계와 가상 세계를 실시간으로 혼합하여 사용자에게 제공함으로써 정보 사용의 효율성과 효과성을 극대화하는 기술이며, 이는 향후 IT 기술 전분야의 발전과 변화에 많은 영향을 줄 '주목해야 할 기술'이다. 혼합현실 기술이 사용자들에게 쉽게 받아들여지고, 보다 적극적으로 널리 활용되기 위해서는 HMD(Head Mount Display), 트래킹 시스템, 실시간 랜더링 및 정합 등 기술적 한계의 극복과 혼합현실에 특화된 사용자 상호작용 기술 개발 및 응용 서비스 창출 그리고 사회적인 용인 한계의 극복 등이 요구된다.

• 한국실내디자인학회논문집
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• 제33호
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• pp.3-10
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• 2002

Virtual reality is not a new concept but just a new word and also it isnt limited to the reality created by computer-assisted image composition. Furthermore, we have lived within the virtual reality since long time ago, and the newly emerging digital technology has made the limits of the virtual expression vague and the definition of space concept new, The magical experiences we have had within the digital space consisted of Virtual space are the philosophical subject which we can hardly explain as a simple dichotomous definition such as Virtuality or Reality. But its true that our experiences made within virtual space are felt as much newer space considering those of space design, which have been traditionally made in our physical territory. Digital game is the representative space that provides a new space. Therefore, the new concept in space will be not just the territory expansion of space but also the opportunity we can find a new possibility through the relation between human and space. At this point in time that the life territory is expanding as a new space, this research goal is to show the new possibility of the connection of human and digital space through studying the relationship of Human and Space, Space and Digital space and Human and Digital space as well as The peculiarity of the space which is expressed at Digital game, the most representative space providing new experiences.

• 한국실내디자인학회논문집
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• 제23권4호
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• pp.83-93
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• 2014

Because the 'image' is the 'reality' in this era, there are the characteristics dematerialized between reality and non-reality in the contemporary architecture. These are promoting individualization, differentiation and multi-layered time with the development of electronic technology. This trend emphasizes the importance of imagines that are not only homogenized, simultaneous but also overlapped, multi-layered, discriminatory. Perspectives and essential characteristics of the architectural skin are changing in terms of the technical and social awareness and that means the skin has features as a complex body. Recently as an imagine creator, the architectural skin make form of media boundaries reflecting the various relationships between the observer and the external environment and also, the interior space become another sensory skin by removing the boundaries of the internal and external. It is important that making an identity of the architecture defined by the media or the imagine as well as the importance of space in architecture. These changes of skin make the third space based on the viewer's imagination and show the potential of new architectural skin with the expansion space by blurring the boundary between reality and illusion. It occurs to the diversity of the architectural skin with the identity. It will more diversified and be recognized immediately and sensibly through the interface attributes in contact with the city directly. In addition, it is more important that the skin become a unified body related with urban, social and cultural context.

• 비교문화연구
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• 제29권
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• pp.201-232
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• 2012

In the world history in the rein of totalitarianism cultural project of government had been activated, and consequently of it official culture had been organized. But at the same time on the other side of it people('narod'), who didn't have cultural means for active expression of own opinion on the reality, had expressed world-view and judgement informally in everyday language. In the literature of autocracy, subjected to censorship, had been expressed and fixed mythically idealized image of sovereign and his works. But in the folklore the image of ruler had been created by liberal fantasy of people. This article examined russian literature and folklore texts of 18 century, when russian people suffered from rapid and dramatic changes, caused by Peter I. Although russian literature of 18 century had gone over to the new literary regime, it still accepted political mechanism as dominant of age, and consequently in the literary texts of this century Peter I was represented as ideal person and great monarch. But various images in folklore texts show that people's opinion on ruler and his activities couldn't be controlled. In other worlds, diverse images of Peter I in folklore texts reflect clear and plain historical consciousness of people. This analysis reveals not only difference between mechanism of idealization of government and historical consciousness of people, but also meaning of cultural memory as indicator of historical reality.

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

• International journal of advanced smart convergence
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• 제11권4호
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• pp.120-128
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• 2022

While online social interactions have been more prevalent with the increased popularity of Metaverse platforms, little has been studied the effects of facial expressions in virtual reality (VR), which is known to play a key role in social contexts. To understand the importance of presenting facial expressions of a virtual avatar under different contexts, we conducted a user study with 24 participants where they were asked to have a conversation and play a charades game with an avatar with and without facial expressions. The results show that participants tend to gaze at the face region for the majority of the time when having a conversation or trying to guess emotion-related keywords when playing charades regardless of the presence of facial expressions. Yet, we confirmed that participants prefer to see facial expressions in virtual reality as well as in real-world scenarios as it helps them to better understand the contexts and to have more immersive and focused experiences.