Byounghyun Yoo

Byounghyun Yoo
Korea Institute of Science and Technology | KIST · Center for Artificial Intelligence

PhD
Looking for potential collaborators, post-doctoral researchers, and graduate students.

About

87
Publications
32,080
Reads
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529
Citations
Introduction
Byounghyun Yoo is a principal research scientist of the Center for Artificial Intelligence (CAI), AI and Robotics Institute at the Korea Institute of Science and Technology (KIST), and an associate professor of HCI & Robotics, KIST School at the University of Science and Technology (UST). He is leading the Webizing Research Lab (WRL).
Additional affiliations
March 2021 - present
University of Science and Technology, Korea
Position
  • Professor
September 2020 - present
Korea University
Position
  • Adjunct Professor
March 2016 - February 2019
University of Science and Technology, Korea
Position
  • Professor (Associate)

Publications

Publications (87)
Article
Full-text available
Due to COVID-19, people have to adapt to the new lifestyle until scientists develop a permanent solution for this pandemic. Monitoring the respiration rate is very important for a COVID-infected person because the Coronavirus infects the pulmonary system of the person. Two problems that arise while monitoring the breath rate are: sensors are contac...
Article
Full-text available
Many studies have consistently proven that repeatedly watching virtual reality (VR) content can reduce cybersickness. Moreover, the discomfort level decreases when the VR content includes an unusual orientation, such as an inverted scene. However, few studies have investigated the physiological changes during these experiences. The present study ai...
Article
Full-text available
Herein, we present an efficient method for the high-precision automatic 3D scanning of unknown objects for mechanical parts. Our method comprises two phases, namely a rough initial scan and a precision scan. The goal of the rough initial scan is to scan the rough shape rapidly and to provide scan data for the precision scan, thereby reducing the du...
Article
Full-text available
Cybersickness refers to a group of uncomfortable symptoms experienced in virtual reality (VR). Among several theories of cybersickness, the subjective vertical mismatch (SVM) theory focuses on an individual's internal model, which is created and updated through past experiences. Although previous studies have attempted to provide experimental evide...
Article
Full-text available
Collaborating in a physically remote location saves time and money. Many remote collaboration systems have been studied and commercialized. Their capabilities have been confined to virtual objects and information. More recent studies have focused on collaborating in a physical environment and with physical objects. However, they have limitations in...
Conference Paper
Full-text available
Virtual Reality (VR) and Augmented Reality (AR) have become familiar technologies with related markets growing rapidly every year. Moreover, the idea of considering VR and AR as one eXtended reality (XR) has broken the border between virtual space and real space. However, there is no formal way to create such XR content except through existing VR o...
Article
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Recent progress in Device-Free Wi-Fi Sensing (DFWS) has established the use of wireless signals like Wi-Fi not only to communicate but also as a tool to enable device-free sensing. As an emerging technique, DFWS has many capable applications such as sensing activity and gesture and fall detection, monitoring elderly, surveillance, and many more app...
Conference Paper
Full-text available
In a rapidly aging society, like in South Korea, the number of Alzheimer's Disease (AD) patients is a significant public health problem, and the need for specialized healthcare centers is in high demand. Healthcare providers generally rely on caregivers (CG) for elderly persons with AD to monitor and help them in their daily activities. K-Log Centr...
Article
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In this article, we present an automatic pose generation approach for robotic 3-D scanning systems designed for the reverse engineering of mechanical parts. 3-D scanning of an object is usually a highly complicated process that involves aligning multiple measurements from different viewpoints, fusing the merged data, and finally reconstructing the...
Article
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In virtual reality (VR), users can experience symptoms of motion sickness, which is referred to as VR sickness or cybersickness. The symptoms include but are not limited to eye fatigue, disorientation, and nausea, which can impair the VR experience of users. Though many studies have attempted to reduce the discomfort, they produced conflicting resu...
Article
Full-text available
Since the vision of a Digital Earth (DE) was introduced in 1998, geo-browsers seem to have nearly fulfilled this vision. Virtual reality (VR) for visualizing the DE provides an immersive user experience in a mirror world. Location-based augmented reality (AR) browsers have been introduced and provide content according to user and environmental cont...
Conference Paper
Full-text available
The web has been an extremely effective collaboration platform, enabling services like Wikipedia article co-authoring, blogging, social messaging, video conferencing, and many others. However, the collaboration should ideally occur Peer to Peer (P2P) among the participants instead of going through a centralized server as in the current centralized...
Conference Paper
Full-text available
Recently, web based cross reality (XR) concept embracing virtual reality (VR), augmented reality (AR), and mixed reality (MR) technology has emerged, but user interaction devices for collaborative work supported in web environments are limited. The Virtual-Reality Peripheral Network (VRPN) in the traditional VR environment provides a device-indepen...
Article
Full-text available
In virtual reality (VR), users can experience symptoms of motion sickness, which is referred to as VR sickness or cybersickness. The symptoms include but are not limited to eye fatigue, disorientation, and nausea, which can impair the VR experience of users. Though many studies have attempted to reduce the discomfort, they produced conflicting resu...
Article
Full-text available
Despite the proliferation of wearable devices and mobile apps for healthcare activity monitoring, no model that complementarily integrates these monitoring logs making up personal big data has been put forth. In addition, such datasets are too large to yield meaningful information. To deal with data from heterogeneous sources, a common format and i...
Conference Paper
Full-text available
A glasses-free super multi-view display has emerged alongside the development of optical technologies. However, the display is not yet widely used because its content remains in the early stages of only image or video without user interaction. Expanding the display market would require content that can take advantage of the display. In this paper,...
Conference Paper
Full-text available
The virtual reality (VR)-based interior design systems have the advantage of cost reductions and can support multiple users without spatial or temporal constraints. Recently, various head-mounted display (HMD) applications for VR using smartphones have become popular, and WebVR technology has been introduced to implement VR applications on the web....
Conference Paper
Full-text available
Smart glass devices have become popular in our daily lives, and many people have applied its advantages to their application fields. In particular, smart glass has the advantage of receiving desired information by maintaining their context of the real world without dispersing their attention. Smart glass is also widely used to obtain information ab...
Conference Paper
Full-text available
Various types of video content using 360° panoramic and virtual reality video have become widespread. However, wearing eyewear as well as a head-mounted display is still a burden of experiencing in 3D content. Glasses-free (i.e. autostereoscopic) super multi-view (SMV) 3D displays provide more comfortable 3D experience but have limited types of con...
Conference Paper
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Although internet of things (IoTs) devices are attractive for making our life smarter, we need to replace existing equipment with IoT devices to connect, and this presents a cost problem. We propose a webized augmented reality mashup for legacy things that connects existing web services with things without the additional costs of replacing existing...
Conference Paper
Full-text available
Recently virtual reality (VR) technology has been widely distributed, but VR interaction devices supported in web environments are limited compared with in the traditional VR environment. In the traditional VR environment, the Virtual-Reality Peripheral Network (VRPN) provides a device-independent and network-transparent interface. To promote the d...
Conference Paper
Full-text available
The emergence of cloud computing environment has a big impact on the change of application usage pattern. People use applications without installation on their computer. In cloud computing environment, applications are available through web browsers regardless of the user's computing environment. The users use the latest version of applications bec...
Conference Paper
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With the development of optic technologies, various forms of stereoscopic 3D displays such, as 3DTVs, head-mounted displays, multi-view autostereoscopic displays, and super multi-view autostereoscopic displays, have emerged. However, displays have various characteristics and different implementations and the supply of content and rendering applicat...
Conference Paper
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The proportion of elderly people over 65 years old has rapidly increased, and social costs related to aging population problems have grown globally. The governments want to reduce these social costs through advanced technologies. The physician or medical center evaluates health conditions from the reports of elderly people. However, self-reports ar...
Conference Paper
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Mobile navigations help people to find route faster and easier. However, current pedestrian navigations provide the same route information as the instructions of car navigation with little consideration for pedestrians. Mobile pedestrian navigations should consider pedestrian walkways and device capabilities. In this paper, we propose a landmark-ba...
Conference Paper
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With the popularization of wearable devices, people who are using multiple mobile devices are increasing; a tourist uses a hand-held device, a wearable device, or both to obtain tour information. However, most mobile tour guides provide tour information with little consideration of their hand-held and wearable characteristics. In addition, tour gui...
Article
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[Purpose] This paper examines the changing backdrop of the consumer market in relation to 3D printing, especially in the context of Web infrastructure that connects consumers and producers with unprecedented diversity and scale, and Web 2.0 user created content in the material domain. [Design/methodology/approach] The paper presents a conceptual a...
Article
Full-text available
Mobile tour guide applications help tourists to search for and visit their surrounding POIs(Points of Interest) of their locations and to obtain their guide information. With the development of wearable devices like smart watches and wearable glasses, people using multiple mobile devices are increasing; a tourist may use a hand-held device, a weara...
Conference Paper
Full-text available
Most mixed and augmented reality (MAR) applications require the target to be specified a priori and need the same MAR applications among cooperative users. Thus, most existing MAR applications are hard to share MAR scenes or contents without prior agreement for cooperative works. To address this problem, we propose a webizing method that redesigns...
Chapter
This chapter investigates how the visualization of sensor resources on a 3D Web-based globe organized by level-of-detail can enhance search and exploration of information by easing the formulation of geospatial queries against the metadata of sensor systems. The case study provides an approach inspired by geographical mashups in which freely availa...
Conference Paper
Full-text available
With the development of 3D Web technologies, 3D objects are now handled as embedded objects without plug-ins on web pages. Although declarative 3D objects are physically integrated into web pages, 3D objects and HTML elements are still separated from the perspective of the 3D layout context, and an annotation method is lacking. Thus it is scarcely...
Article
Full-text available
With steady growth in the deployment of sensor networks and widespread usage of mobile devices, the production of geo-referenced data is increasing exponentially, while analysis of the data typically uses a variety of application services on the Internet for activities such as logging and driving. This geo-referenced content needs to be classified...
Conference Paper
Full-text available
Notwithstanding a proliferation of wearable devices and mobile apps for activities monitoring, no model has been put forth to complementarily integrate the monitored data. We propose an enriched activity model to reorganize personal activity logs from heterogeneous sensors and to visualize logs in a harmonized way with a meaningful summary.
Conference Paper
Full-text available
This paper presents a mobile application that helps tourists acquire information using three types of views—AR, map, and list view—each of which has different drawbacks and benefits. To deal with the disadvantages of each view, we propose a view-management component to change the layout depending on the context.
Article
Full-text available
Measurement errors of kinematic signals introduced by motion capture systems are unacceptably amplified when differentiating the signal to derive acceleration. Existing fully automatic methods for solving this problem have a weakness on non-stationary signals involving impacts, while semi-automatic methods each require that users carefully determin...
Conference Paper
Full-text available
It is easy to get lost while browsing and navigating spatiotemporal content, and the problem is exacerbated by the exponential growth of geospatial data with mobile phones and tablets. In this paper, we propose a continuous method of transition visualization with zooming and panning interaction of the maps and timelines on touch-based devices that...
Conference Paper
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Information presentation techniques are important in augmented reality applications as they are in the traditional desktop user interface (WIMP) and web user interface [6]. This paper introduces view management for a web-based augmented reality mobile platform. We use a webized mobile AR browser called Insight that provides separation of the applic...
Conference Paper
Full-text available
This demonstration shows a novel approach for Webizing mobile augmented reality, which uses HTML as its content structure, and its real-life use cases. Insight is a mobile AR Web browser that executes HTML5-based AR applications. By extending physical objects and places with a uniform resource identifier (URI), we could build objects of interest fo...
Conference Paper
Full-text available
The Monterey Bay Aquarium Research Institute designed the Spatial Temporal Oceanographic Query System (STOQS) to create new capabilities for scientists to gain insight from their data. STOQS employs open standards and is a 100% free and open source project. It includes a Web-based graphical user interface where X3D Geospatial has been integrated to...
Article
Full-text available
This paper presents a content structure for building mobile augmented reality (AR) applications in HTML5 to achieve a clean separation of the mobile AR content and the application logic for scaling as on the Web. We propose that the content structure contains the physical world as well as virtual assets for mobile AR applications as document object...
Article
Full-text available
There are several issues with Web-based search interfaces on a Sensor Web data infrastructure. It can be difficult to (1) find the proper keywords for the formulation of queries and (2) explore the information if the user does not have previous knowledge about the particular sensor systems providing the informa- tion. We investigate how the visuali...
Conference Paper
Full-text available
To facilitate the dynamic exploration of the Sensor Web and to allow users seamlessly to focus on a particular sensor system from a set of registered sensor networks deployed across the globe, interactive 3D graphics on the Web, which enables sensor data exploration featuring a good level of detail for a multi-scaled Sensor Web, is necessary. A com...
Article
Full-text available
Motion effects are the most important physical effects of commercial feature films in the latest cinemas equipped with multi-sensory-effect systems known as 4DX theaters. This paper presents a framework for automatically generating motion effects from a video. We propose a seven-step motion-effect production pipeline based on the concept of structu...
Article
Full-text available
The depiction and navigation of large-scale urban landscapes are limited by the great cost of traditional computer-aided design (CAD) models for large urban environment in terms of both the labor of data entry and the runtime computational expense. This article presents a hybrid modeling approach that enables rapid urban model production from legac...
Article
Full-text available
We investigate how the visualization of sensor resources on a 3D Web-based globe organized by level- of-detail can enhance search and exploration of information by easing the formulation of geospatial queries against the metadata of sensor systems. Our case study provides an approach inspired by geographical mashups in which freely-available functi...
Patent
Full-text available
본 발명은 시청자의 머리의 기울임과 위치에 따라 입체영상이 변화하는 기능을 구비하여 시청자세의 변화에 따라 능동적으로 반응하는 3차원 입체영상의 생성 시스템과 방법에 관한 것이다. 본 발명에 따른 3차원 입체영상 생성 시스템은 입력 영상의 종류에 따라 주 영상과 보조 영상을 획득하는 영상 획득부와 시청자의 시청방향과 시청위치에 관한 시청자세정보를 수집하는 시청자세 수집부, 획득한 영상으로부 터 시청자의 시청자세에 따라 3차원 입체영상을 생성하는 3차원 입체영상 생성부를 포함하는 것을 특징으로 한다.
Article
Full-text available
This paper introduces a displacement mapping algorithm that represents protruded shapes on the surface of an object. Two verticalsurfaces that are perpendicular to the underlying surface are added along the boundary of the polygon surface in order to represent pixels overflowing acrossthe boundary of the polygon surface. The proposed approach can a...
Patent
Full-text available
本 発明は、コンピュータを用いて3次元の立体映像を生成する方法に関し、もっと詳しくは、単眼による2次元の平面イメージとZバッファに貯蔵されたイメージ の距離情報とを用いて3次元の立体映像を生成する方法に関するものである。本発明によれば、実際にポリゴン面から突出した形状のシルエットを正確に表現す ることができる。従来のGPUを利用した映像基盤の変位マッピング方法が基準面から陥没した形状しか表現できなかったのとは違い、本発明によれば、実際に ポリゴン面から突出した形状を表現するように変位マップを定義し、突出した形状のシルエットを表現することができる。また、ポリゴン面の形状を変形せず、 単に補助的な二つの面を付け加えることにより、全体モデルの頂点の数をほとんど増加させずに突出した形状の詳細を表現す...
Conference Paper
Full-text available
There are several issues with Web-based search interfaces on a Sensor Web data infrastructure. It can be difficult to 1) find the proper keywords for the formulation of queries and 2) explore the information if the user does not have previous knowledge about the particular sensor systems providing the information. We investigate how the visualizati...
Conference Paper
We introduce a web-service and its subsystems for scientific data exchange that is geographically referenced. This system has been designed for interdisciplinary research groups who conduct various scientific observations and generate their own scientific data in different environmental engineering area. These data include raw data from physical se...
Patent
Full-text available
The present invention relates, in general, to technology applied to entertainment information devices, such as video game machines or computer game programs, information devices for representing geo-spatial information, or information devices for performing three-dimensional rendering using computer graphics and, more particularly, to a protruded d...
Article
Full-text available
Global interests for construction of 3 dimensional spatial information has risen due to development of measurement sensors and data processing technologies. In spite of criticism for the violation of personal privacy, CCTV cameras equipped in outdoor public space of urban area are used as a fundamental sensor for traffic management, crime preventio...
Article
Full-text available
Training war fighters how to maneuver a submarine is very important, but the use of real submarines in such training is expensive and hindered by regional and temporal limitations. Modeling and simulation (M&S) can be a good alternative to costly training. However, the use of existing M&S for submarines has limitations. For instance, the commercial...
Conference Paper
Full-text available
Broad needs for digital models of real environments such as 3D terrain or cyber cities are increasing. Many applications related to modeling and simulation require virtual environments constructed from real-world geospatial information in order to guarantee relevance and accuracy in the simulation. The most fundamental data for building virtual env...
Conference Paper
Full-text available
Digital Earth is being re-evaluated and there are weakness and limitations in geobrowsers despite of its successful widespread adoption. Especially the interoperability of virtual globes, neutrality of digital earth model, and openness are tasks to be solved for putting forward the vision of the Digital Earth. This paper presents an open standard-b...
Patent
Full-text available
이 발명은 컨테이너 하우스 형태로 제작하여 설치현장으로 이송한 후 전원 공급만으로 간단하게 이용이 가능하며, 공간적인 제약이 없이 이동이 가능한 이동식 몰입형 가상환경제공 시스템에 관한 것이다. 이 발명은 이동이 가능한 공간에 멀티채널의 고해상도 몰입형 디스플레이 시스템과 공조 시스템을 겸비하여 몰입형 가상환 경을 제공할 수 있어, 설치 장소에 별도의 공사를 필요로 하지 않고, 간단히 운반하여 설치하는 것만으로 사용이 가능하다. 또한,공사현장등과같이가변적인환경또는자주변하는환경에빠르고다양하게적용할수있도 록 필요에 따라 이동식 몰입형 가상환경의 확장이 가능하며, 더 나아가 내부의 고해상도 몰입형 디스플레이 채널 수와 구성의...
Article
Full-text available
The needs for digital models of real environment such as 3D terrain or cyber city model are increasing. Most of applications related with modeling and simulation require virtual environment constructed from geospatial information of real world in order to guarantee reliability and accuracy of the simulation. The most fundamental data for building v...
Conference Paper
Full-text available
The needs for digital models of real environment such as 3D terrain or cyber city model are increasing. Most of applications related with modeling and simulation require virtual environment constructed from geospatial information of real world in order to guarantee reliability and accuracy of the simulation. The most fundamental data for building v...
Patent
Full-text available
본 발명은 비디오 게임기 및 컴퓨터 게임 같은 엔터테인먼트 정보기기, 지형 공간 정보를 표현하는 정보기기 또는 컴퓨터 그래픽을 이용한 3차원 렌더링을 수행하는 정보기기에 적용되는 기술로서, 대상물을 표면으로부터 돌출되도록 표현하는 돌출 변위 매핑 방법에 관한 것이다. 이 발명에 따른 돌출 변위 매핑 방법은, 변위정보에 의해 정의되는 돌출된 물체의 표면과 관찰자 시선과의 교점을 검색하 여 상기 돌출된 물체 형상을 상기 폴리곤 면에 표시하는 교점검색단계와; 상기 폴리곤 면을 추가하여 상기 폴리곤 면의 경 계를 벗어나는 초과분에 해당하는 상기 돌출된 물체 형상을 상기 추가 폴리곤 면에 표시하는 초과분표시단계와; 상기 돌출 된...