• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.907-909
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• 2005

체감형 게임의 재미를 극대화 하기 위해서 몰입감있는 게임화면이 제공되어야 한다. 곡면, 반구형 스크린은 일반 평면 스크린을 사용할 때 보다 더 높은 몰입감을 줄 수 있지만 투사시 생기는 왜곡영상 보정에 많은 계산이 요구되는 문제가 있다. 정지된 영상(프리젠테이션 화면)이나 비디오 영상은 메모리 버퍼링을 통해 시스템이 요구하는 속도를 보장할 수 있으나, 사용자와 상호작용이 요구되는 게임에서는 사용자의 반응을 처리한 후 매 프레임 마다 빠른 워핑(warping) 처리를 요구하게 되는데, 렌더링될 화면을 미리 보정할 수가 없기 때문에 시스템 처리속도 저하의 원인이 된다. 본 논문에서는 체감형 게임을 곡면에 투사하는 방법과 GPU를 이용한 빠른 영상 보정을 제안함으로써 게임에서 요구하는 처리 속도를 보장하고 고해상도의 게임화면을 사용할 수 있도록 했다. 웹카메라를 이용하여 스크린과 프로젝터될 영상간의 호모그래피(homographpy)를 정의해서 워핑했고 워핑 연산을 HLSL로 작성하여 GPU를 이용했다. 실험결과로 반구형 스크린에서 몰입감 있는 AR 탁구게임을 보인다.

• Journal of Korea Game Society
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• v.14 no.5
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• pp.61-68
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• 2014

In the generalization of mobile content use, feedback is a kind of alert that affects content immersion. An alert leads to separation from the content currently being used to transfer to content that raises the alert. Immersive interference can be recognized as a problem in mobile contents use. In this paper, we propose a serious game for overcomes immersion. interference from feedback and the foundation for interrelation research between feedback and immersion. The proposed serious game has been designed to present three kinds of feedback, specifically positive, negative, and hybrid feedback, through social information about the user. We also conducted an experiment to examine the correlation between three kinds of feedback and immersion while consuming digital content. The result of the experiment showed that negative feedback leads to higher immersion than positive feedback.

• ETRI Journal
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• v.38 no.5
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• pp.838-846
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• 2016

The objective of digital broadcasting has evolved from providing a plain video service to offering a realistic visual experience. Technologies such as 3DTV and UHDTV have been suggested to achieve this new objective by providing an immersive and stereoscopic visual experience. However, owing to the high bandwidth requirements of such services, the broadcasting industry has faced a challenge to find a new transport mechanism for overcoming the bandwidth limitation. The standardization organizations, the Advanced Television Systems Committee, Digital Video Broadcasting, and Telecommunications Technology Association, have been working on the integration of broadcasting and a broadband network (IP) to resolve the bandwidth issue of realistic video services. This paper introduces a frame-level timeline synchronization and transport system target decoder model for providing a stable 3DTV service over a hybrid network. The experimental results indicate that the proposed technologies can be successfully adopted as a reference model in a broadcast-broadband hybrid 3DTV service and other IP-associated hybrid broadcasting services.

• International journal of advanced smart convergence
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• v.10 no.4
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• pp.134-140
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• 2021

Big data has recently been used in various industries such as tourism, medical care, distribution, and marketing. And it is evolving to the stage of collecting real-time information or analyzing correlations and predicting the future. In the tourism industry, big data can be used to identify the size and shape of the tourism market, and by building and utilizing a large-capacity database, it is possible to establish an efficient marketing strategy and provide customized tourism services for tourists. This paper has begun with anticipation of the effects that would occur when big data is actively used in the tourism field. Because the method of use must have applicability and practicality, the spatial scope will be limited to Seosan, Chungcheongnam-do, and research will be conducted. In this paper, to improve the quality of tourism courses by collecting and analyzing the number of mention data and sentiment index data on social media, which reflect the tourist's interest, preference and satisfaction. Therefore, it is used as basic data necessary for the development of new local tourism courses in the future. In addition, the development of tourism courses will be able to promote tourism growth and also revitalizing the local economy.

• Journal of Information Technology Services
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• v.21 no.6
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• pp.1-19
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• 2022

This study empirically analyzed the effects of immersion and self-efficacy on the intention to continuously use realistic media. To this end, we used an extended technology acceptance model that includes not only the perceived ease of use and usefulness, but also the perceived joy as important factors. We collected data from 595 participants through an online questionnaire survey and tested the research model using a covariance-based SEM. As a result, we found that a user's immersion significantly increased perceived usefulness, ease of use, and joy of realistic media; and self-efficacy increased perceived usefulness and ease of use. Although the effect of perceived usefulness was relatively stronger than that of perceived joy, we found that the effect of perceived joy on the intention to use was also quite large. The effect of perceived ease of use on intention to use was found to be completely mediated by perceived usefulness and joy. In addition, the differences according to the types of media were tested by comparing two groups: augmented reality and virtual reality. The effects of perceived ease, usefulness, and joy on the intention to use were very similar regardless of the type of immersive media. However, it was found that self-efficacy increases usefulness only in augmented reality. Based on our findings, we have discussed the implications of our study, as well as the scope for future research.

• Journal of Conservation Science
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• v.37 no.4
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• pp.362-369
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• 2021

In museums, exhibition content focuses mostly on cultural heritage's historical values and functions, but doing so tends to limit visitors' interest and immersion. To counter this limitation, the study developed an experiential media art exhibition fusing bronze mirrors' traditional production technology and modern conservation science. First, for the exhibition system, scientific cultural heritage contents were projected on the three-dimensional (3D) printed bronze mirror through interactions between motion recognition digital information display (DID) and the projector. Then, a scenario of 17 missions in four stages (production process, corrosion mechanism, scientific analysis and diagnosis, and conservation treatment and restoration) was prepared according to the temporal spectrum. Additionally, various media art effects and interaction technologies were developed, so visitors could understand and become immersed in bronze mirrors' scientific content. A user test was evaluated through the living lab, reflecting generally high levels of satisfaction (90.2 points). Qualitative evaluation was generally positive, with comments such as "easy to understand and useful as the esoteric science exhibition was combined with media art" (16.7%), "wonderful and interesting" (11.7%), and "firsthand experience was good" (9.2%). By combining an esoteric science exhibition centered on principles and theories with visual media art and by developing an immersive directing method to provide high-level exhibition technology, the exhibition induced visitors' active participation. This exhibition's content can become an important platform for expanding universal museum exhibitions on archaeology, history, and art into conservation science.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2016.06a
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• pp.54-55
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• 2016

개인이 실시간 방송을 할 수 있는 개인방송은 게임, 스포츠, 교육을 비롯하여 시대의 흐름을 고려한 요리, 다이어트 등과 같은 광범위한 미디어 콘텐츠를 생산하고 있다. 최근에는 실감형 콘텐츠를 위해 360도 카메라와 이를 마우스, 터치스크린, 자이로센서를 이용하여 제어하는 방식들이 소개되고 있다. 하지만 이러한 기술들을 활용해 더 많은 콘텐츠를 생산하기 위해서는 기술을 쉽게 사용할 수 있도록 제작자의 편리성을 고려한 기술 서비스의 제공이 필요하다. 본 논문에서는 실감 콘텐츠 제작 편리성을 위한 개인방송용 NUI 기술 서비스에 대해 논하고자 한다. 콘텐츠의 다양성과 빠르게 변화하는 IoT 기기 확장성을 고려하여 이와 연동 가능한 제스처 인식, 음성 인식 등과 같은 비 접촉식 NUI 서비스 기술과 이를 활용해 방송 제공자가 편리하게 다양한 콘텐츠를 제공할 수 있는 서비스 개념도를 제안하고, 관련 API 설계에 대해 보인다. 본 연구를 통해 개인방송을 접하는 사람들의 편의성, 흥미를 만족시켜 다채로운 서비스를 제공할 수 있고 나아가 편리성을 고려한 NUI 서비스 가이드라인을 마련할 수 있을 것으로 기대된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.2
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• pp.982-1004
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• 2017

The recent advances in the field of augmented reality (AR) have shown that the technology is a fundamental part of modern immersive interactive systems for the achievement of user engagement and a dynamic user experience. This survey paper presents the descriptions of a variety of the new AR explorations, and the issues that are relevant to the contemporary development of the fundamental technologies and applications are discussed. Most of the literature regarding the pertinent topics-taxonomy, the core tracking and sensing technologies, the hardware and software platforms, and the domain-specific applications-are then chronologically surveyed, and in varying detail, this is supplemented with the cited papers. This paper portrays the diversity of the research regarding the AR field together with an overview of the benefits and the limitations of the competing and complementary technologies.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.189-191
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• 2016

실시간 물리 기반 3D 시뮬레이션에서 연산속도는 매우 중요한 요소이다. 객체의 움직임이나 변형과 같은 현상들은 복잡한 연산을 통해서 계산되기 때문에 일반적으로 시뮬레이션의 정확도와 연산속도는 반비례 관계에 있다. 현재 출시되고 있는 대부분의 게임에서는 물체의 움직임을 정확하게 표현하기보다 연산량을 줄이기 위해 물체의 움직임이나 변형을 비슷하게 표현하는데 중점을 두고 있다. 본 논문에서는 이러한 문제를 해결하기 위하여 OpenGL 4.3의 Compute shader를 사용하여 다이내믹 시뮬레이션의 연산 작업을 GPU 병렬처리로 처리하였다. Compute shader에서 파티클의 움직임을 계산하고 Shader storage buffer object에 저장하고 파티클들의 작업량을 적절한 Workgroup의 크기로 나누어 할당하여 최적의 처리속도를 제공하도록 구현하였다. Compute shader에서 파티클의 움직임을 표현하기 위해서 수치해법 중의 하나인 Euler method를 사용하였으며 실험 결과 파티클의 수가 4,194,304개일 때 CPU 방법에 비해 약 182배 빠른 연산속도 결과를 보였다. 추후 Compute shader를 활용하여 연산량이 많은 분야에 적용 가능할 수 있을 것으로 기대한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2015.07a
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• pp.125-128
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• 2015

본 연구는 실감미디어를 활용한 무대기술 적용을 위해 UWB 센서를 이용한 동적 피사체 추적 시스템을 제안하고자 한다. 최근 공연산업에서는 실감미디어를 활용하여 관객의 오감을 자극하여 극도의 몰입감을 제공하는 시도가 지속해서 증가하고 있다. 특히 배우와 무대장치의 움직임을 실시간으로 반영하여 디지털 미디어 연출 요소로 활용한다면 관객의 실재감과 몰입감을 효과적으로 증대시킬 수 있다. 하지만 대부분 위치추적 솔루션은 제조, 물류, 유비쿼터스 자동화 시스템으로 연구가 활발히 진행되고 있으며, 공연 무대기술과 관련하여 위치추적 솔루션 연구는 미진한 실정이다. 따라서 본 논문에서는 고속의 근거리 무선 통신망을 제공할 수 있는 해결책으로 최근 주목받고 있는 Ultra Wide Band 무선 센서를 사용하여 무대 공연기술 활용에 적합한 동적 피사체 위치추적 시스템을 개발하고, 그 성능을 실험하여 위치정보의 정확도를 분석하고자 한다.