• ETRI Journal
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• 제30권6호
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• pp.757-764
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• 2008

In this paper, we present a design evaluation system with visualization and interaction of mobile devices using virtual-reality-based prototypes which can be used to easily change design parameters and simulate embedded software. To evaluate and predict affective-engineering-based design preferences for mobile devices under a virtual environment, we have developed a high quality visualization platform which creates images that look similar to real mobile devices in addition to real-time simulation of realistic motions and functions of mobile devices. To support a quantitative usability test scenario for external design shape, we also have built a system which consists of a mixed-reality-based testing platform for measuring hand load.

• Journal of Information Processing Systems
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• 제12권4호
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• pp.612-630
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• 2016

As mobile augmented reality technologies are spreading these days, many users want to produce augmented reality (AR) contents what they need by themselves. To keep pace with such needs, we have developed a mobile AR contents builder (hereafter referred to as MARB) that enables the user to easily connect a natural marker and a virtual object with various interaction events that are used to manipulate the virtual object in a mobile environment so that users can simply produce an AR content using natural photos and virtual objects that they select. MARB consists of five major modules-target manger, virtual object manager, AR accessory manager, AR content manager, and AR viewer. The target manager, virtual object manager and AR accessory manager register and manage natural target markers, various virtual objects and content accessories (such as various decorating images), respectively. The AR content manger defines a connection between a target and a virtual object with enabling various interactions for the desired functions such as translation/rotation/scaling of the virtual object, playing of a music, etc. AR viewer augments various virtual objects (such as 2D images, 3D models and video clips) on the pertinent target. MARB has been developed in a mobile application (app) format in order to create AR contents simply using mobile smart devices without switching to a PC environment for authoring the content. In this paper, we present the detail organizations and applications of MARB. It is expected that MARB will enable ordinary users to produce diverse mobile AR contents for various purposes with ease and contribute to expanding the mobile AR market based on spread of a variety of AR contents.

• 전자통신동향분석
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• 제38권2호
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• pp.46-55
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• 2023

Extended reality (XR) provides an immersive virtual experience by using various media. The XR virtual environment enables interactions between the real and virtual worlds in virtual, augmented, and mixed reality scenarios. XR is being used in various areas such as industry, medical care, road transportation, gaming, education, and culture. XR and multimedia enhancement are important business scenarios for fifth-generation (5G) mobile networks. As users' demand for emerging media services gradually increases, enhancements in networks should be implemented for delivering multimedia services such as XR. We describe related standardization trends and requirements of the XR service in 5G mobile networks. We also discuss technological enhancements for 5G mobile networks as specified by the 3GPP SA2 working group.

• 반도체디스플레이기술학회지
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• 제15권2호
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• pp.66-69
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• 2016

Recently, augmented reality and virtual reality in the ICT sector have been highlighted. So also interested in related HMD areas to facilitate contact with the VR content is being attend. This paper proposes a method for implementing to the virtual reality through the mobile HMD device with the real time 360 image. This system is required the real time 360 image streaming server configuration and image processing for augmented reality and virtual reality. The configuration of the streaming server is configured the DB server to store images and the relay server that can relay images to other devices. Augmented image processing module is composed based on markerless tracking, and there are four modules that are recognition, tracking, detecting and learning module. Also, the purpose of this paper is shown the augmented 360 image processing through the Mobile HMD.

• 한국게임학회 논문지
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• 제17권6호
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• pp.7-18
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• 2017

올해 구글, 애플, 페이스북 등 글로벌 IT 기업들은 모바일 증강현실 플랫폼을 연이어 출시하였다. 기존 증강현실 기술은 AR글래스 또는 탱고폰과 같은 전용 디바이스가 필요하였으나, 이제는 일반 안드로이드폰과 아이폰에서도 쉽게 증강현실을 경험할 수 있게 되었다. 포켓몬고 게임 이후 관심이 높아진 모바일 증강현실 게임 시장도 더욱 활성화될 전망이다. 본 고에서는 모바일 증강현실 게임을 위한 증강현실 플랫폼 기술과 ETRI 프로토타입을 포함한 모바일 증강현실 게임 개발 사례를 사용자 인터페이스를 중심으로 소개한다.

• 한국CDE학회논문집
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• 제21권4호
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• pp.397-408
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• 2016

VR and AR are widely used in many applications to provide more immersive visualization and natural interaction for learning and experiencing virtual but realistic tasks. Energy saving is considered as one of the most important issues throughout the world in order to overcome global warming and energy crisis. In particular, the awareness of home energy saving is regarded as a first step to deal with this issue. In this paper, we suggest a new learning environment using virtual and augmented reality (VR/AR) for home energy saving experience. In particular, it presents a comparative study of the user experience in home energy awareness using immersive virtual reality and mobile augmented reality. The first person user experience using immersive VR wearing head mounted display (HMD) and the third person user experience using mobile AR are implemented and systematically compared with each other in terms of the learning effect of energy saving and qualitative usability. Implementation results will be given to show the advantage and effectiveness of the proposed approach.

• 반도체디스플레이기술학회지
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• 제18권1호
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• pp.123-128
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• 2019

Currently mobile services are on the verge of full commercialization ahead of 5G mobile communication (5G). The first goal could be to preempt the 5G market through realistic media services utilizing VR (Virtual Reality) and AR (Augmented Reality) technologies that users can most easily experience. Basically this movement is based on the advanced development of smart devices and high quality graphics processing computing power of mobile application processors. Accordingly, the importance of mobile GPUs is emerging and the most concern issue becomes a model for predicting the power and performance for smooth operation of high quality mobile contents. In many cases, the performance of mobile GPUs has been introduced in terms of power consumption of mobile GPUs using dynamic voltage and frequency scaling and throttling functions for power consumption and heat management. This paper introduces several studies of mobile GPU performance prediction model with user-friendly methods not like conventional power centric performance prediction models.

• 한국컴퓨터그래픽스학회논문지
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• 제22권3호
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• pp.31-41
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• 2016

본 연구는 모바일 플랫폼 기반의 가상현실 콘텐츠 제작에 적합한 입력 처리 기술을 제안한다. 우선 가상현실 콘텐츠를 체험하는 사용자의 몰입감 향상, 흥미 유발 그리고 편리한 조작이 가능한 입력처리 기술을 설계하기 위하여 실험에 사용될 모바일 플랫폼 기반의 3차원 대화형 콘텐츠를 제작한다. 그리고 모바일에 접근성이 용이한 게임패드 방식과 사용자가 바라보는 시선을 직접 인터페이스로 활용하는 방식의 두 단계로 나누어 입력 처리 기술을 설계한다. 제안한 가상현실 기반의 입력 처리 기술이 사용자에게 몰입감 향상의 효과, 흥미를 유발시키는 동기 그리고 콘텐츠를 조작하는데 편리함을 제공하는 지 여부를 실험을 통해 분석한다. 뿐만 아니라 멀미 현상, 피로감 같은 부정적인 심리 요인을 야기시키는 여부 또한 검증하도록 한다.

• 한국정보통신학회논문지
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• 제16권1호
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• pp.205-211
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• 2012

본 논문에서는 스마트폰의 위치 정보를 활용한 모바일 증강현실에서 사용자 상황에 적합한 가상 정보를 제공하기 위한 상황인지 기반 증강현실 플랫폼을 제안하였다. 기존 증강현실 응용들과 플랫폼 분석을 통해 3가지 문제점을 추출하고 이를 바탕으로 플랫폼 아키텍처와 6개 구성요소별 기능과 정보 전달 체계를 설계하였다. 제안하는 상황인지 기반 증강현실 플랫폼은 사용자 적합 정보 추출을 위해 상황추론서비스 요소를 포함하며, POI(Points of Interest) 데이터 호환 문제를 해결하기 위해 가상세계 정보가 저장된 외부 가상세계 네트워크로부터 내부 플랫폼을 분리하였다.

• 한국항행학회논문지
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• 제15권6호
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• pp.1047-1052
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• 2011

최근 스마트폰과 태블릿PC 등 다양한 모바일 기기가 급속도로 보급되면서 모바일 네트워크를 활용하는 다양한 서비스가 탄생하고 있다. 하지만 스마트 기기의 콘텐츠는 주로 게임이나 메시징 서비스에 의존하고 있어 다양성이 부족하다. 이에 본 논문에서는 증강현실 기술을 활용하여 모바일 단말과 네트워크 기반에서 가상으로 교육을 받을 수 있는 시스템에 대한 연구를 진행 하였다.