• Journal of the Korea Society of Computer and Information
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• v.26 no.11
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• pp.51-57
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• 2021

In this paper, we propose a new framework that calculates the user's hand motions using a Leap Motion device, and uses this to practice and analyze arm muscles as well as juggling motions. The proposed method can map the movement of the ball in a virtual environment according to the user's hand motions in real time, and analyze the amount of exercise by visualizing the relaxation and contraction of the muscles. The proposed framework consists of three main parts : 1) It tracks the user's hand position with the Leap Motion device. 2) As with juggling, the action pattern of the user throwing the ball is defined as an event. 3) We propose a parabola-based particle method to map the movement of a juggling shape to a ball based on the user's hand position. As a result, using the our framework, it is possible to play a juggling game in real-time.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.469-472
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• 2020

본 논문에서는 립모션 디바이스를 이용하여 손의 움직임을 계산하고 이로부터 저글링 운동 동작뿐 만 아니라 이것을 이용한 팔 근육을 연습할 수 있는 새로운 프레임워크를 제안한다. 제안된 방법은 실시간으로 동작하기 때문에 사용자의 동작에 맞춰진 분석을 할 수 있다. 본 논문의 프레임워크는 크게 세 부분으로 나누어진다. 우선, 1) 사용자가 공을 튕기는 이벤트 트리거를 손목 움직임으로부터 정의한 뒤, 2) 사용자의 손 위치를 기준으로 저글링 형태의 움직임을 공에 매핑시키기 위한 포물선 기반 입자 기법을 제안한다. 마지막으로, 3) 손목의 굽힘을 기반으로 근육의 활동 양을 시각화할 수 있는 기법을 제안한다. 결과적으로 본 논문의 프레임워크를 이용하면 실시간 저글링 게임을 할 수 있을 뿐만 아니라 사용자의 팔 근육 움직임을 실시간으로 분석할 수 있다.

• The Journal of the Korea Contents Association
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• v.19 no.11
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• pp.270-277
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• 2019

These days, with the advent of digital broadcasting, media environment offers users an opportunity to enjoy differentiated contents in a more aggressive fashion through user-media interactions based on computer technology. In fact, the development of contents which can induce spontaneous acts from users such as outdoor ads which use certain sensors and devices and exhibition halls has been active. With the development of low-price motion recognition devices, people have been able to enjoy diverse interaction-applied media by recognizing users' motion data without body contact. In this paper, we developed an interactive media player that can recognize the user's motion and control the video in the web service environment without installing a specific program. In addition, we set user motion recognition range and developed a user motion recognition algorithm suitable for the Leap Motion equipment installed in the kiosk. The results of this study can be experienced by various interactive media such as interactive tourism, education, and movie contents in kiosks that can be installed in public places.

• Journal of the Korea Society of Computer and Information
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• v.19 no.8
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• pp.129-137
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• 2014

The patients who have illness of hand and upper limb should be received rehabilitation treatment to recover such illness. The rehabilitation treatments is a treatments designed to facilitate the process of recovery from injury, illness, or disease to as normal a condition as possible. This should be done continuously and repeatedly. In this paper, we describe hand-rehabilitation system which provides a treatment method improving and recovering the function of injured hands. Expecially, this system is using a leap motion device which can easily and properly identify and trace a hand motion and provide six treatment patterns for hand rehabilitation. By using this system, the patients can do rehabilitation treatment easily and continuously in their daily life and in result, the achievement of treatment will be improved.

• Journal of Digital Contents Society
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• v.17 no.4
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• pp.287-293
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• 2016

Some studies require sufficient amount of time, spaces, and financial condition for practical exercises and training. In particular for the Medical education, time and space limitation is very high and difficulties occurs, since the practices are done with cadavers (deceased human body). Many alternate 3D Virtual surgery training system exist currently, however the burdensome of obtaining those costly equipments is problematic. Providing the surgical environment as similar to real as possible using 3D Virtual Reality can be a solution to current problems. The effectiveness of training could be maximized with minimized costs without the general interfaces such as keyboard and mouse, but with Oculus Rift and Leap Motion. This paper will develop and practice the 3D Virtual Operation System with two devices to investigate the possibility and expand to other Simulation fields.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.9
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• pp.2006-2013
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• 2015

Deaf are it is difficult to communicate to represent the voice heard, so theay use mostly using the speech, sign language, writing, etc. to communicate. It is the best way to use sign language, in order to communicate deaf and normal people each other. But they must understand to use sign language. In this paper, we designed and implementated finger language translation system to support communicate between deaf and normal people. We used leap motion as input device that can track finger and hand gesture. We used raspberry pi that is low power sing board computer to process input data and translate finger language. We implemented application used Node.js and MongoDB. The client application complied with HTML5 so that can be support any smart device with web browser.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.768-770
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• 2016

현재 NUI(Natural User Interface)는 차세대 입력 방식으로 주목을 받고 있다. 이미 한글 입력에 관한 NUI가 다양하게 연구 및 개발되고 있지만, 한글 입력 NUI는 직관성과 정확도의 부족과 불완전한 인식률 등의 한계점이 존재한다. 본 연구에서는 사용자의 핸드 제스처를 인식하기 위해 Leap Motion 장치를 사용하고, 한글의 글자 조합 원리를 바탕으로 자음과 모음 입력의 제스처를 분리하여 인식의 정확도를 높인다. 그리고 모음의 방향성을 참고하여 한글 입력에 직관성을 향상할 수 있는 핸드 제스처를 연구한다. 이를 통해 사용자가 NUI 환경의 디바이스를 좀 더 정확하고 빠르게 조작할 수 있도록 돕는다.