• Journal of Korea Multimedia Society
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• v.11 no.3
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• pp.373-385
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• 2008

The evolution of input device for computer has pretty much slowed down after the introduction of mouse as feinting input device. Even though stylus and touch screen were invented later on which provide some alternatives, all these methods were designed to have close range interaction with computer. There are not many options available for user to interact with computer from afar, which is especially needed during presentation. Therefore, in this paper, we try to fill the gap by proposing a laser pointer interaction system to allow user to give pointing input command to the computer from some distance away using only laser pointer, which is cheap and readily available. With the combination of image processing based software, we could provide mouse-like pointing interaction with computer. The proposed system works well not only in currently plane screen, but also in flexible screen by incorporating the feature of non-linear coordinate mapping algorithm in our system so that our system can support non-linear environment, such as curved and flexible wall.

• Science of Emotion and Sensibility
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• v.8 no.3
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• pp.189-202
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• 2005

Since the origin of the web site in ti)e first part of the 90's there has been discussion regarding the function of aesthetics. Visual aesthetics has for the most part played an absolutely necessary role in human-computer interactive research. This study is intended to design websites on aesthetic aspects which focuses on the websites of universities in Korea and China. What exactly are the differences and commonalities of each; and how they have been clarified by methods of empirical research on aesthetic measurements.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.569-572
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• 2008

The possibility to extent the solution in human detection problem for plug-in on vision-based Human Computer Interaction domain is very attractive, since the successful of the machine leaning theory and computer vision marriage. Bayesian logistic regression is a powerful classifier performing sparseness and high accuracy. The difficulties of finding people in an image will be conquered by implementing this Bavesian model as classifier. The comparison with other massive classifier e.g. SVM and RVM will introduce acceptance of this method for human detection problem. Our experimental results show the good performance of Bavesian logistic regression in human detection problem, both in trade-off curves (ROC, DET) and real-implementation compare to SVM and RVM.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.320-322
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• 2021

With the development of wireless Internet technology and the expansion of the game market, various forms of games are being developed that are mounted on various platforms, including mobile platforms. In this environment, ensuring the immersion of the game user's perspective will secure the game's competitiveness, so it is necessary to increase the immersion by satisfying each area presented by the Human Computer Interaction (HCI) theory. To this end, this high school implemented downhill games and experimented with kiosks by applying an interface that recognizes the human body's movements as a way to secure freedom and immersion of game users.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.142-147
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• 2006

3D 센서테이블은 디스플레이가 내장된 테이블 위에서 사용자의 맨손이 움직일 때 그것을 감지하고 반응하는 센싱정보를 처리하도록 만든 것으로 양안시차 방식의 3 차원 입체영상에서 보여지는 가상의 오브젝트와 사람과의 인터렉션이 가능하도록 설계되었다. 본 연구에서는 3 차원 공간에서의 맨손을 이용한 사람과 컴퓨터 간의 인터렉션 방법에 중점을 두고 있는데 맨손의 위치정보와 제스처를 알기 위해서 Electric Field Sensing 기법을 이용하였다. 현재 구현된 3D 센서테이블은 테이블로부터 30cm 이내의 거리에서 움직이는 맨손의 위치와 간단한 제스처를 인식할 수 있다. 이를 통해서 기존의 마우스나 키보드가 가졌던 3 차원 공간에서 사용할 때 불편했던 점들을 해소하고, 직관적이면서도 누구나 사용하기에 쉬운 인터페이스 방법을 제시함으로써 사람과 컴퓨터와의 인터렉션 방법을 확장시킬 수 있다. 또한 기존의 많은 연구에서 맨손을 이용한 기법들이 주로 2D 기반이었던 것에 비하여 본 시스템은 2D뿐 아니라 3 차원 공간에서도 활용할 수 있다는 장점을 가진다.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.1056-1062
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• 2006

소니컴퓨터엔터테인먼트의 플레이스테이션(R)이나 마이크로소프트의 엑스박스(R)등의 비디오 게임기가 차지하고 있는 시장의 크기가 점점 커지고 있고, 이에 적용되는 기술도 점점 발전하고 있다. 최근에는 무선랜이나 블루투스 등의 기술을 통한 네트워크 연결을 통해 인터넷 접속이 가능해졌고, 간단한 문서 편집이나 개인 정보 관리 기능도 추가되었다. 이러한 기능들이 추가되면서 비디오 게임기에 문자를 입력하는 방법의 필요성이 일어나고 있다. 하지만 비디오 게임기의 기본 입력 장치인 아날로그 스틱을 이용하여 한국어를 입력하는 방법에 대한 연구는 부족한 상태이다. 본 논문에서는 한글의 창제원리를 이용하여 자음과 모음을 각각 아래쪽, 위쪽, 왼쪽, 오른쪽의 네 가지 기본 그룹으로 분류하고, 시계 방향 회전과 반시계 방향 회전을 이용해서 자모를 매핑하는 새로운 한국어 입력 방법인 ASK-HIM을 제안한다. ASK-HIM 은 화면 키보드와 비교를 하였을 때 좀 더 좋은 결과를 보여주었고, 단순한 방식으로 사용이 편리하다는 장점을 지니고 있다.

• Structural Engineering and Mechanics
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• v.23 no.4
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• pp.325-337
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• 2006

A hybrid structural design and optimization methodology that combines the strengths of genetic algorithms, local search techniques, and parallel computing is developed to evolve optimal truss systems in this research effort. The primary objective that is met in evolving near-optimal or optimal structural systems using this approach is the capability of satisfying user-defined design criteria while minimizing the computational time required. The application of genetic algorithms to the design and optimization of truss systems supports conceptual design by facilitating the exploration of new design alternatives. In addition, final shape optimization of the evolved designs is supported through the refinement of member sizes using local search techniques for further improvement. The use of the hybrid approach, therefore, enhances the overall process of structural design. Parallel computing is implemented to reduce the total computation time required to obtain near-optimal designs. The support of human-computer interaction during layout optimization and local optimization is also discussed since it assists in evolving optimal truss systems that better satisfy a user's design requirements and design preferences.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.293-297
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• 2007

Human Computer Interaction 기술을 구체화 시키기 위한 Intelligent Responsive Space의 개발에 있어서 음성정보는 여러 가지로 유용하게 활용될 수 있다. 음성신호로부터 얻을 수 있는 다양한 정보 중의 하나가 화자인식을 이용한 화자의 신원식별이다. 이 논문에서는 화자인식 인식이 어려운 환경에서도 음성 신호로부터 추출한 특성벡터들을 선택적으로 사용함으로써 화자인식 성능을 높일 수 있는 새로운 방법을 제안하려 한다. 화자를 인식하는데 있어서 인식오류를 발생시킬 가능성이 높은 특성벡터들을 인식을 위한 판단의 대상에서 배제시킴으로써 성능을 향상시킬 수 있다. 실험결과에 의하면 0.25초에서2초 길이의 짧은 음성만으로도 기존의 방법에 비해 20에서 51%의 상대적 성능 향상을 보였다. 새롭게 제안된 방법을 적용하면 기존의 방법들에 비해 세밀하면서도 정확하게 연속적으로 화자들을 인식할 수 있게 된다.

• The Journal of Korea Robotics Society
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• v.8 no.2
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• pp.104-115
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• 2013

For natural human-robot interaction, we need to know location and shape of facial feature in real environment. In order to track facial feature robustly, we can use the method combining particle filter and active appearance model. However, processing speed of this method is too slow. In this paper, we propose two ideas to improve efficiency of this method. The first idea is changing the number of particles situationally. And the second idea is switching the prediction model situationally. Experimental results is presented to show that the proposed method is about three times faster than the method combining particle filter and active appearance model, whereas the performance of the proposed method is maintained.

• Journal of information and communication convergence engineering
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• v.21 no.1
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• pp.68-74
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• 2023

This study examines the response of users' feelings from a gender perspective toward interactive video mobile learning (IVML). An IVML prototype was developed for the Android platform allowing users to install and make use of the app for m-learning purposes. This study aims to measure the level of feelings toward the IVML prototype and examine the differences in gender perspectives, identify the most responsive feelings between male, and female users as prominent feelings and measure the correlation between user-friendly feeling traits as an independent variable in accordance with gender attributes. The feelings response could then be extracted from the user experience, user interface, and human-computer interaction based on gender perspectives using the Kansei engineering approach as the measurement method. The statistical results demonstrated the different emotional reactions from a male and female perspective toward the IVML prototype may or may not have a correlation with the user-friendly trait, perhaps having a similar emotional response from one to another.