Sunjin Yu
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View article: Effects of virtual reality intervention dosage on gait performance in Parkinson’s disease: a systematic review and meta-analysis
Effects of virtual reality intervention dosage on gait performance in Parkinson’s disease: a systematic review and meta-analysis Open
Objective Gait impairment is a prevalent and disabling feature of Parkinson’s disease (PD) that is often insufficiently improved by conventional rehabilitation approaches. Virtual reality (VR)-based training has emerged as a novel therapeu…
View article: Open-Data-Driven Unity Digital Twin Pipeline: Automatic Terrain and Building Generation with Unity-Native Evaluation
Open-Data-Driven Unity Digital Twin Pipeline: Automatic Terrain and Building Generation with Unity-Native Evaluation Open
The creation of simulation-ready digital twins for real-world simulations is hindered by two key challenges: the lack of widely consistent, application-ready open access terrain data and the inadequacy of conventional evaluation metrics to…
View article: AI as a Bridge Between Theory and Practice in Teacher Education: How Textual and Metaverse-Based ChatGPT Modalities Shape Help-Seeking
AI as a Bridge Between Theory and Practice in Teacher Education: How Textual and Metaverse-Based ChatGPT Modalities Shape Help-Seeking Open
This study explored whether immersion mode affects the efficacy of artificial intelligence (AI) driven learning modalities in developing teaching efficacy among pre-service teachers. This study explored the potential of AI-based technologi…
View article: Trans‐Space: Space Computing Based Spatiotemporal Resources Optimization for Signalized Intersection with Transfer Learning
Trans‐Space: Space Computing Based Spatiotemporal Resources Optimization for Signalized Intersection with Transfer Learning Open
The optimization of spatial and temporal resources at signalized intersections is a critical aspect of intelligent transportation systems. Traditional traffic signal control methods, which usually rely on fixed signal timings and lane assi…
View article: Multivariate Time Series Clustering with State Space Dynamical Modeling and Grassmann Manifold Learning: A Systematic Review on Human Motion Data
Multivariate Time Series Clustering with State Space Dynamical Modeling and Grassmann Manifold Learning: A Systematic Review on Human Motion Data Open
Multivariate time series (MTS) clustering has been an essential research topic in various domains over the past decades. However, inherent properties of MTS data—namely, temporal dynamics and inter-variable correlations—make MTS clustering…
View article: Roblox Graffiti Art Using Virtual Reality Devices: Reality and Spatial Presence in a Virtual Space
Roblox Graffiti Art Using Virtual Reality Devices: Reality and Spatial Presence in a Virtual Space Open
Graffiti makes a city’s landscape beautiful while simultaneously being considered illegal and violating a city’s cleanliness and respect for public spaces. To solve these problems, we present metaverse virtual-world technology. Within the …
View article: Multi-Cat Monitoring System Based on Concept Drift Adaptive Machine Learning Architecture
Multi-Cat Monitoring System Based on Concept Drift Adaptive Machine Learning Architecture Open
In multi-cat households, monitoring individual cats’ various behaviors is essential for diagnosing their health and ensuring their well-being. This study focuses on the defecation and urination activities of cats, and introduces an adaptiv…
View article: Full-Body Motion Capture-Based Virtual Reality Multi-Remote Collaboration System
Full-Body Motion Capture-Based Virtual Reality Multi-Remote Collaboration System Open
Various realistic collaboration technologies have emerged in the context of the COVID-19 pandemic. However, as existing virtual reality (VR) collaboration systems generally employ an inverse kinematic method using a head-mounted display an…
View article: Virtual Reality Metaverse System Supplementing Remote Education Methods: Based on Aircraft Maintenance Simulation
Virtual Reality Metaverse System Supplementing Remote Education Methods: Based on Aircraft Maintenance Simulation Open
Due to the COVID-19 pandemic, there has been a shift from in-person to remote education, with most students taking classes via video meetings. This change inhibits active class participation from students. In particular, video education ha…
View article: Mobile AR Contents Production Technique for Long Distance Collaboration
Mobile AR Contents Production Technique for Long Distance Collaboration Open
This study proposes that mobile AR users with different physical spaces can use one collaboration coordinate by synchronizing each other's coordinates.When each user uses mobile AR remote contents from a distance, it is difficult to mainta…
View article: Mobile AR Contents Production Technique for Long Distance Collaboration
Mobile AR Contents Production Technique for Long Distance Collaboration Open
This study proposes that mobile AR users with different physical spaces can use one collaboration coordinate by synchronizing each other's coordinates. When each user uses mobile AR remote contents from a distance, it is difficult to maint…
View article: Haptic Soft-Keyboard for Tablet-Sized Touchscreens
Haptic Soft-Keyboard for Tablet-Sized Touchscreens Open
Most users are not satisfied with the typing vibration feedback from linear motors of mobile phones since it feels like buzzing rather than physical key pressing feedback. For larger touchscreens, such as 10.1 inch tablets, there is no com…
View article: Performance Improvement of Clustering Method Based on Random Swap Algorithm
Performance Improvement of Clustering Method Based on Random Swap Algorithm Open
This paper proposes a method for improving performance of clustering algorithm.Among unsupervised learning methods such as clustering, K-means has the advantage of being widely used and simple to implement, but has problems that is heavily…
View article: Foot Measurement Using 3D Scanning Model
Foot Measurement Using 3D Scanning Model Open
In a three-dimensional (3D) foot scanning, a 3D point cloud is generated and meshed to create a 3D foot model with depth information.In the previous analog process of foot scanning is to draw an outline of the foot and imitate the foot dir…
View article: Immersive Stereoscopic 3D System with Hand Tracking in Depth Sensor
Immersive Stereoscopic 3D System with Hand Tracking in Depth Sensor Open
Recently, interest in immersive tele-conference is increasing.Conventional 2D images cannot provide a stereoscopic effect, but stereoscopic 3D (S3D) images can provide a more realistic image to people.Also, hand tracking technology is an i…
View article: Single Image-Based 3D Face Modeling for 3D Printing
Single Image-Based 3D Face Modeling for 3D Printing Open
3D 프린팅은 최근 다양한 분야에서 활용 되고 있다. 다양한 활용 분야 중 사람의 얼굴을 3D 프린팅을 위해서는 먼저 3D 얼굴 데이터를 생성해야 한다. 3D 얼굴 데이터 획득을 위해 레이저 스캐너 등이 활용되고 있으나 스캔 중에 사람이 움직이면 안 되는 제약이 있다. 본 논문에서는 단일 영상 기반의 3D 얼굴 모델링 방법과 생성된 3D 얼굴을 가상 성형 등에 쓰일 수 있도록 얼굴 변형 시스템을 제안한다. 3D 얼굴 데이터 …
View article: The Reliable Multicast Transport Protocol over Wireless Convergence Networks using a Retransmission Agent
The Reliable Multicast Transport Protocol over Wireless Convergence Networks using a Retransmission Agent Open
본 논문에서는 무선 기지국에서 멀티캐스트 패킷 재전송을 담당하는 Agent를 설치하여 신뢰성있는 멀티 캐스트 프로토콜인 MFTP에서의 재전송률을 낮추고자 한다. 유무선 통합 환경에서 신뢰성 있는 멀티캐스트 프로토콜 사용 시, 무선 링크의 비트 에러와 단말의 이동성을 보장하기 위한 핸드오프로 오류가 많이 발생한다. 이런 오류때문에 멀티캐스트 그룹에 제어 및 재전송 패킷이 증가하게 되며, 또한 멀티캐스트 그룹 세션 전체 성능이 …