Woontack Woo

Korea Advanced Institute of Science and Technology, Graduate School of Culture Technology, Faculty Member

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Woontack Woo is a Professor in the Graduate School of Culture Technology (GSCT) at Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea. He also has been the Vice President of the Korean Institute of Next Generation Computing (since 2011), Vice Chair of the CG
Supervisors: Antonio Ortega and Hong Jeong
Phone: +82423502923
Address: KAIST GSCT N5 #2323
Daejeon 34141
Korea

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Papers by Woontack Woo

CAMAR: Context-Aware Mobile AR System for Personalized Smart Object Control and Media Contents Provision in Ubiquitous Computing Environment

Journal of the Institute of Electronics Engineers of Korea, 2007

Researchers in mobile AR systems have so far put the value on the technical challenges involved i... more Researchers in mobile AR systems have so far put the value on the technical challenges involved in the limitations imposed from mobility. Beyond such immediate technical questions, however, are questions regarding the possible contents that are to be used for the user’s interaction in ubiquitous computing environment. Various aspects of context of user and environment can be utilized easily as well as effectively. Moreover, the environment will be equipped with lots of pervasive but invisible computing resources. However, it is difficult for users to have access to those computing resources. At the same time, as the smart appliances get to have more features, their user interfaces tend to become harder to use. Thus, in this paper, we propose Context-Aware Mobile Augmented Reality (CAMAR) system. In our system, users only need to take a picture of smart appliances with a built-in camera in a mobile device when they intend to control the appliances. It lets users interact with the sma...

복수 객체 추적 방법과 장치 및 저장매체

User Centered Context-aware Smart Home Applications

Journal of KIISE:Software and Applications, 2004

User Centered Context-aware Smart Home Applications

Journal of KIISE:Software and Applications, 2004

A Contextual Information and Physics-based Mobile Augmented Reality Contents Manipulation Method

The effects of spatial configuration on relative translation gain thresholds in redirected walking

Virtual Reality

In this study, we explore how spatial configurations can be reflected in determining the threshol... more In this study, we explore how spatial configurations can be reflected in determining the threshold range of Relative Translation Gains (RTGs), a translation gain-based Redirected Walking (RDW) technique that scales the user's movement in Virtual Reality (VR) in different ratios for width and depth. While previous works have shown that various cognitive factors or individual differences influence the RDW threshold, constructive studies investigating the impact of the environmental composition on the RDW threshold with regard to the user's visual perception were lacking. Therefore, we examined the effect of spatial configurations on the RTG threshold by analyzing the participant's responses and gaze distribution data in two user studies. The first study concerned the size of the virtual room and the existence of objects within it, and the second study focused on the combined impact of room size and the spatial layout. Our results show that three compositions of spatial configuration (size, object existence, spatial layout) significantly affect the RTG threshold range. Based on our findings, we proposed virtual space rescaling guidelines to increase the range of adjustable movable space with RTGs for developers: placing distractors in the room, setting the perceived movable space to be larger than the adjusted movable space if it's an empty room, and avoid placing objects together as centered layout. Our findings can be used to adaptively rescale VR users' space according to the target virtual space's configuration with a unified coordinate system that enables the utilization of physical objects in a virtual scene.

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Rate-distortion based dependent coding for stereo images and video: Disparity estimation and dependent bit allocation

for their constructive feedback as committee members. I also would like to thank Prof. Christos K... more for their constructive feedback as committee members. I also would like to thank Prof. Christos Kyriakakis and Prof. Zhen Zhang, who have kindly served on my qualifying examination committee. I would like to express my special appreciation to Prof. Hong Jeong who was my advisor in the MS program at Pohang University of Science and Technology, Korea. His careful guidance shaped my understanding on research life as well as on my chosen eld. I also would like to acknowledge to Prof. Youngho Ha who ceaselessly encouraged me to study abroad. I w as very fortunate to have met him in my early years at Kyungpook National University, Korea. My special thanks go to Prof. Jongwon Kim, Prof. Mel Siegel at Carnegie Mellon University and Dr. Belle Tseng at IBM Watson Research Center for all the fruitful discussions on stereo image/video coding and segmentation issues. I would like to thank all faculty and colleagues at Signal and Image Processing Institute, EE-Systems, USC. Especially, I am highly indebted to my o cemates Wenqing Jiang, Sangyoung Lee and Raghavendra Singh. The long hours in the o ce could not have beenenjoyable without their help. I am grateful of all members at Video Communication Group, who shared the weekly Pizza-meeting in a pleasant atmosphere. Especially, my thanks go to Nazeeh Aranki,

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Augmented Reality and Virtual Reality

Progress in IS, 2019

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신경회로망을 이용한 매니퓰레이터의 목표물 추적 (Visuo-Tracking Control Using Neural Network)

Technologies for E-Learning and Digital Entertainment

Lecture Notes in Computer Science, 2008

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Feature extraction for emotion analysis based on physiological signal pattern

KHCI2005, 2005

2010 Cloud-Mobile Convergence for Virtual Reality Workshop (CMCVR 2010)

Conference proceedings title page.

2010 Cloud-Mobile Convergence for Virtual Reality Workshop

The following topics are dealt with: cloud-mobile convergence paradigm; virtual reality systems; ... more The following topics are dealt with: cloud-mobile convergence paradigm; virtual reality systems; proximal resource-based architecture; augmented reality applications; virtual worlds linkage; user-generated content; Internet services; mobile augmented reality clients; invasive sensor systems and dynamic media applications.

Tabletop, Mobile Augmented Reality System for Personalization and Cooperation, and Interaction Method Using Augmented Reality

Abstract: The present invention relates to a tabletop, mobile augmented system for personalizatio... more Abstract: The present invention relates to a tabletop, mobile augmented system for personalization and cooperation and an interaction method using augmented reality. More particularly, the present invention relates to a tabletop, mobile augmented reality system for personalization and cooperation and an interaction method using augmented reality that adds a mobile interface for providing a user personal space to a table interface for providing a cooperative space for users such that information on a table can be brought to a ...

Apparatus and Method for Detecting a Vertex of an Image

Abstract: Disclosed are an apparatus for detecting a vertex of an image and a method for the same... more Abstract: Disclosed are an apparatus for detecting a vertex of an image and a method for the same detecting the vertex with the high degree of accuracy and reducing time to detect the vertex by minimizing the interaction operations of the user to detect the vertex even in a touch input part having the low degree of sensing precision. The method includes inputting a vertex position of an image, setting an ROI, detecting a plurality of edges, detecting a candidate straight line group based on the edges, and removing a candidate straight line ...

Three-Dimensional Menu System Using Manual Operation Tools

Abstract: Disclosed is an augmented reality-based three-dimensional menu system using manual oper... more Abstract: Disclosed is an augmented reality-based three-dimensional menu system using manual operation tools. According to the present invention, the three-dimensional menu system comprises: a display device; at least one pair of manual operation tools which are manually operated by the user, and are in a hexahedral shape; an image acquisition device which acquires images for the manual operation tools; and a menu augmentation unit which tracks the manual operation tools from the acquired images, and augments menu items in ...

CAMAR Companion : 스마트 공간에서 증강 콘텐츠의 개인화를 위한 맥락 인식모바일 증강 현실 시스템

한국hci학회 학술대회, Feb 1, 2009

In this paper, we describe CAMAR Companoin, a context-aware mobile AR system that provides a user... more In this paper, we describe CAMAR Companoin, a context-aware mobile AR system that provides a user-adaptive assistance with an augmented picture according to the user's context in smart space. It recognizes physical objects and tracks the movement of those objects with a camera embodied to a mobile device. CAMAR Companion observes a mobile user's context, which is sensed by various kinds of sensors in environments, and infers user preference for the content in the situation. It recommends multimedia content relevant to the user's context. It overlays selected content over associated physical objects and enables the user to experience the content in a user-centric manner. Furthermore, we have developed the prototype to illustrate how our system could be used for a mobile user's well-being care applications in smart home environments. In this application, we found that our system could perceive a user preference even though a user's context is changed dynamically, and then adapt the multimedia content with respect to the user's context effectively. As such, the proposed user-adaptive system has the potential to play an important role in developing customized user interfaces in mobile devices.

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The emerging Cloud-Mobile convergence paradigm for next-generation VR systems: Message from the CMCVR 2010 organizers

2010 Cloud-Mobile Convergence for Virtual Reality Workshop (CMCVR 2010) Proceedings, 2010

Abstract Pervasive environments feature settings that are radically different from those traditio... more Abstract Pervasive environments feature settings that are radically different from those traditional VR systems were designed for. To name a few of such settings, high mobility, slim device form factor, limited processing power, and constrained battery life. Developing VR systems to be used in pervasive environments is thus both attractive and challenging. Having worked on VR and pervasive computing for some years, we believe that the convergence of cloud resources and mobile devices is a key to create the user experience ...