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Changyeong Kim


Publications by Changyeong Kim (bibliography)

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Heo, Seongkook, Han, Jaehyun, Choi, Sangwon, Lee, Seunghwan, Lee, Geehyuk, Lee, Hyong-Euk, Kim, SangHyun, Bang, Won-Chul, Kim, DoKyoon and Kim, Changyeong (2011): IrCube tracker: an optical 6-DOF tracker based on LED directivity. In: Proceedings of the 2011 ACM Symposium on User Interface Software and Technology 2011. pp. 577-586. http://dx.doi.org/10.1145/2047196.2047272

Six-degrees-of-freedom (6-DOF) trackers, which were mainly for professional computer applications, are now in demand by everyday consumer applications. With the requirements of consumer electronics in mind, we designed an optical 6-DOF tracker where a few photo-sensors can track the position and orientation of an LED cluster. The operating principle of the tracker is basically source localization by solving an inverse problem. We implemented a prototype system for a TV viewing environment, verified the feasibility of the operating principle, and evaluated the basic performance of the prototype system in terms of accuracy and speed. We also examined its application possibility to different environments, such as a tabletop computer, a tablet computer, and a mobile spatial interaction environment.

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Yoo, ByungIn, Han, Jae-Joon, Choi, Changkyu, Yi, Kwonju, Suh, Sungjoo, Park, Dusik and Kim, Changyeong (2010): 3D user interface combining gaze and hand gestures for large-scale display. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3709-3714. http://doi.acm.org/10.1145/1753846.1754043

In this paper, we present a novel attentive and immersive user interface based on gaze and hand gestures for interactive large-scale displays. The combination of gaze and hand gestures provide more interesting and immersive ways to manipulate 3D information.

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Han, Seungju, Lee, Hyunjeong, Park, Joonah, Chang, Wook and Kim, Changyeong (2010): Remote interaction for 3D manipulation. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 4225-4230. http://doi.acm.org/10.1145/1753846.1754130

In this paper, we present a two-handed 3D interaction approach for immersive virtual reality applications on a large vertical display. The proposed interaction scheme is based on hybrid motion sensing technology that tracks the 3D position and orientation of multiple handheld devices. More specifically, the devices have embedded ultrasonic and inertial sensors to accurately identify their position and attitude in the air. The interaction architecture is designed for pointing and object manipulation tasks. Since the sensor system guarantees 3D spatial information only, we develop an algorithm to exactly track the position of interest produced by the pointing task. For the object manipulation, we have carefully assigned one-handed and two-handed interaction schemes for each task. One-handed interaction includes selection and translation while rotation and scaling are assigned for the two-handed interaction. By combining one-handed and two-handed interactions, we believe that the presented system provide users with more intuitive and natural interaction for 3D object manipulation. The feasibility and validity of the proposed method are validated through user tests.

© All rights reserved Han et al. and/or their publisher

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