• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.4
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• pp.739-744
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• 2022

Modern people, who are fully enjoying convenience with improved technology, are pursuing health next to convenience. Accordingly, the smart healthcare industry is rapidly increasing, and various companies are launching healthcare system products with applied VR. However, existing products on the market are expensive or professional products. Therefore, there are parts that are difficult for the general public to use. In this paper, we propose smart health care contents that can experience virtual reality anytime and anywhere at an affordable price and take care of health through exercise using Arduino and general bicycles sold in the market.

• Journal of the Korea Society of Computer and Information
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• v.25 no.4
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• pp.55-61
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• 2020

In this paper, we present a novel approach to efficiently control the location of NPC(Non-playable characters) in the interactive virtual world such as game, virtual reality. To control the NPC's movement path, we first calculate the main trajectory based on the user's path, and then move the NPC based on the weight map. Our method constructs automatically a navigation mesh that provides new paths for NPC by referencing the user trajectories. Our method enables adaptive changes to the virtual world over time and provides user-preferred path weights for smartagent path planning. We have tested the usefulness of our algorithm with several example scenarios from interactive worlds such as video games, virtual reality. In practice, our framework can be applied easily to any type of navigation in an interactive world.

• Journal of the Korea Computer Graphics Society
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• v.28 no.5
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• pp.1-11
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• 2022

Game engines have the advantage of enabling efficient content production, such as reducing development time, with minimal visual quality guarantees and support for multi-platforms. Recently, game engines have provided various functions that can easily, quickly, and effectively produce immersive content using virtual reality (VR) HMD. Therefore, this study conducts a comparative study on the development environment in VR content production using Oculus Quest 2 HMD, focusing on Unity and Unreal game engines, which are widely used in the content production industry, including games. First, we compare the basic setup process of building a development environment using Oculus Quest 2 HMD and a dedicated controller based on a VR template project that includes the minimum functions and settings provided by each engine. Next, we present a simple experience environment that can interact in a virtual environment and compare the development environment to use a dedicated controller and the process of building a development environment that directly utilizes hands through the hand tracking function provided by Oculus Quest 2. Through this process, we will understand the basic process of building a VR development environment, and at the same time, we will check the characteristics and differences of the engine and use it as a research that can be applied to various immersive content production.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.387-390
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• 2017

최근 현대 사회에 '가상현실'개념이 도입됨에 따라 '가상현실'기술이 적용된 게임 콘텐츠들이 활성화되고 있는 추세이다. 이와 더불어 기존의 GUI와 NIUI에서 발전된 새로운 인터페이스로 텐저블 인터페이스(Tangible Interface)가 급부상하면서 관련 인터페이스를 활용한 연구 또한 필요한 시점이며, 이를 기반으로 하여 '가상현실'기술과 텐저블 인터페이스를 융합한 새로운 게임 콘텐츠를 제안을 하고자 '가상현실' 기기를 활용한 텐저블 인터페이스 기반의 학습용 Unity 3D 게임 콘텐츠를 제작하였다.

• Journal of the Korea Society of Computer and Information
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• v.24 no.4
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• pp.73-81
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• 2019

Various 3D contents are being developed using Unity 3D game engine. In this paper, the 3D content of horseback riding game, the first VR game in the country, is designed and developed. The existing riding simulator is investigated and compared to the VR riding game developed. We consider various games developed using Unity 3D game engine and serve previously developed tangible games. It is expected that development of VR riding games will prepare a new chapter in VR experience-type games. We propose the content development environment and scenario of VR riding game and present the main algorithms and main modules for real-time synchronization. The developed riding game contents are deployed to the riding system and are operated for commercial use in conjunction with the riding device. Through monitoring VR riding system, problems are derived and improvement measures are proposed. We offer a variety of additional development options to make the game more realistic in the future.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.715-716
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• 2015

최신 IT 기술 변화의 중심점에 있는 3D 가상현실이란, 어떤 특정한 환경이나 상황을 컴퓨터로 만들어서, 그것을 사용하는 사람이 마치 실제 주변 상황 환경과 상호작용을 하고 있는 것처럼 만들어 주는 인간-컴퓨터 사이의 인터페이스를 하는 컴퓨터 프로그래밍 기법이다. 이처럼 무한한 가능성을 가진 3D 가상현실을 이용한 여러 가지 프로젝트가 쏟아져 나오고 있다. 현재 의학에 관한 실습 지식을 배우는데 있어서 장비 및 상황이 여의치 않은 경우가 많다. 위와 같은 필요성을 기본으로 하여, 본 논문에서는 가상현실을 기반으로 만든 간단한 의학시술 과제를 통해 교육생들이 실습해보고 기본적인 실습 흐름 및 의학 지식을 습득할 수 있는 간호 교육 시뮬레이션을 개발하였다. 환자의 상태와 병명을 표기해주며 위 환자에게 투여할 수 있는 약에 대한 선택을 교육생에게 주어준다. 교육생은 환자에게 투여할 약을 선택하고 투약할 약의 양을 조절하며, 마지막으로 투약하는 방법에 대해서 선택지를 통해 선택한다. 가상현실을 통해 몰입감을 높일 수 있어 간호교육에 효율적이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.625-627
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• 2018

본 연구는 전 연령 및 아동을 대상으로 하는 모바일 AR(Augmented Reality, 증강현실) 기반의 스마트폰 어플리케이션을 설계 제안하고, 아동이 사용가능한 교육용 책 교구를 설명한다. 현재 시중에 출시된 어플리케이션에 대해 분석하고, 사용자의 동기유발과 집중력 향상을 목적으로 학습 구조를 도출한다. 학습의 집중을 위한 단순한 사용자 인터페이스를 설계하여, 증강현실 기술과 접목한다. 본 연구를 통해 사용자는 책이 가진 지식의 보고를 유지하며 스마트 폰을 통한 자율학습을 유지할 수 있다. 경제적 소비 감소와 스마트 폰의 활용도를 기대할 수 있다.

• Journal of the Korea Computer Graphics Society
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• v.26 no.3
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• pp.21-29
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• 2020

This study defines the pipeline for digital fashion contents production using CLO 3D, a 3D fashion design software that supports virtual clothing visualization as a cutting-edge simulation technology for fashion, and vuforia, a mobile platform augmented reality (AR) development kit for creating AR applications. The proposed production pipeline is organized in a method to produce a virtual clothing model through CLO 3D software through works of patterns, sewing lines, textures, etc., and AR contents based on computer vision techniques using the functions and properties of vuforia development kits in the Unity engine development environment. In addition, we present application method that can be practically utilized from the perspective of practical users, such as fashion designers and directors, by creating a new type of AR digital fashion contents directly as a flow of the defined production pipeline.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.584-586
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• 2022

In this paper, we proposed an augmented reality(AR) service for the Great Gilt-bronze Incense Burner of Beakje - one of Korea's national treasures - using smart glasses. The proposed AR service was developed using Microsoft's HoloLens 2, MRTK, and Unity programs. The proposed service starts when the user wears HoloLens 2 and looks at a QR code next to the displayed the Great Gilt-bronze Incense Burner. Then, the proposed service visually provides users with the historical explanation of the Great Gilt-bronze Incense Burner and the objects in it. In particular, the proposed service augments virtual 5 musicians of the Great Gilt-bronze Incense Burner so that users can experience the performance culture of the Baekje era. Therefore, we can provide users with the value and meaning of the cultural heritage of the Baekje era as an expanded experience by using the virtual 5 musicians to overcome the current temporal and spatial constraints. We can confirm whether the proposed AR service is provided to users through HoloLens 2, in harmony with the Great Gilt-bronze Incense Burner of Baekje, a cultural heritage.

• International conference on construction engineering and project management
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• 2022.06a
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• pp.1067-1074
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• 2022

An architect creates his/her design to meet owner's requirements. Floor plans, perspective drawings, and scale models are used in order for the owner to choose the design. The tools are a little helpful for communication between the architect and the owner in case the owner does not know architecture. The scale models are good, but it is hard to make scale models while design is in progress. 3D CAD is a good tool for communication, but it is time-consuming and requires high-performance computer hardware. Augmented reality is able to show 3D virtual models that are updated by the architect with smart devices such as a smart phone and a tablet PC. The owner frequently reviews the updated design anytime anywhere. This study proposes a method to use augmented reality for architectural design and construction management. The method supports the communication between the owner, the architect and the contractor to review updated designs, and to complete the building project. 3D models expressed in augmented reality are created using SketchUp with 2D drawings for building construction. An Android application implementing augmented reality is developed by Qualcomm Vuforia and Unity on smart devices. Drawings as markers and 3D models are connected in Unity. And functions that temporarily hide unnecessary parts can be implemented in C# programming language. If an owner, an architect, or a contractor looks at a smart phone on a 2D drawing, he/she can identify building elements such as 3D buildings or columns on a screen. This can help communication between them.