• Proceedings of the IEEK Conference
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• 2009.05a
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• pp.270-272
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• 2009

본 연구에서는 자동차 사고나 뇌졸중 등에 의해 경추 이하의 마비나 손, 발 등의 움직임은 자유롭지 않은 사람들의 컴퓨터 사용을 돕고자 손이나 발을 이용하지 않고 머리의 움직임과 눈의 깜박임만으로 컴퓨터 마우스 제어가 가능한 장치를 제안하였다. 마우스의 좌우, 상하 이동은 각속도 센서를 이용하여 머리의 움직임으로 유발하고, 클릭과 더블 클릭은 광 센서를 시야를 방해하지 않는 위치에 장착하여 감지할 수 있도록 하였다. 제안한 마우스를 Quick Glance를 이용한 것과 비교해 보고 문자를 입력함에 있어 dasher을 이용하는 것과 윈도우에서 제공하는 화상키보드를 이용하는 것을 비교해 보았다. 공간 이동 능력과 이벤트 검출을 비교한 실험에서는 좌우, 상하 이동은 기존 마우스와 비교하여 속도 면에서는 큰 차이는 없었으나, 정확도가 조금 떨어지는 이유로 인하여 소요시간이 $3{\sim}4$배 정도 더 필요하였다. 그러나 Quick glance와 비교결과에서는 약 14%정도 빠랐고 dasher을 이용하여 문자를 입력함에 있어서도 약 32% 이상 빠르게 문자를 입력할 수 있었다. 실험 결과 눈이 쉽게 피로해지는 Quick glance를 이용하는 것보다 제안한 마우스를 사용하는 것이 더 효과적이었다.

• Journal of the HCI Society of Korea
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• v.5 no.2
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• pp.1-6
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• 2010

In this research, we designed the head mouse system for disabled and gamers, a mouse controller which can be controlled by head movements and eye blinks only, and compared its performance with other regular mouse controller systems. The head mouse was moved by a gyro-sensor, which can measure an angular rotation of a head movement, and the eye blink was used as a clicking event of the mouse system. Accumulated errors caused by integral, which was a problem that previous head mouse system had, were removed periodically, and treated as dead zones in the non-linear relative point graph, and direct mouse point control was possible using its moving distance and acceleration calculation. We used the active light sources to minimize the influence of the ambient light changes, so that the head mouse was not affected by the change in external light source. In a comparison between the head mouse and the gazing tracking mouse (Quick Glance), the above method resulted about 21% higher score on the clicking event experiment called "20 clicks", about 25% higher on the dasher experiment, and about 37% higher on on-screen keyboard test respectively, which concludes that the proposed head mouse has better performance than the standard mouse system.

• Journal of Digital Contents Society
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• v.5 no.3
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• pp.239-244
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• 2004

New developments in IT already impact wide segments of a young and mobile population. It is evident that applications of information technology can be of equal benefit to the aged and the disabled. `Eye-Gaze'(EGI) technology was designed for people with paralysis in the upper body. There is a compeling need for a dedicated Korean Language interface for this system. The purpose of this study is to research 'Barrier Free' software using a control group of the mobility impaired to assess the Eye-Gaze Interface in the context of more conventional input methods. TheEGI of this study uses Quick Glance System of Eye Tech Digital Systems. The study will be evaluated on criteria based upon the needs of those with specific disabilities and mobility problems associated with aging. We also intend to explore applications of the Eye-Gaze Interface for English and Japanese devises, based upon our study using the Hangul phonology.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.533-537
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• 2004

고도 정보사회의 진전에 있어 정보의 수집, 정보의 전달 등을 위해, 여러 IT기기가 사용 되어지고 있다. 이러한 상황 속에서 IT기기를 장애자나 고령자를 포함, 누구나가 쉽게 이용 할 수 있도록 하는 유니버설디자인은 매우 중요한 일이다. 특히 상체부자유자의 인터페이스 장치로서 시선입력장치가 주목 받고 있다. 이러한 시대적인 흐름에서 본 연구에서는 Eye-gaze Interface를 이용한 시선입력만으로 컴퓨터상에서 한글입력이 가능한 한글 입력 시스템을 개발 제안한다. 또한 본 연구의 목적으로는 기존의 키보드, 마우스에 의한 입력장치와 Eye-gaze Interface를 이용한 입력 장치와의 정점과 단점을 비교 분석하고, 정보 사회에 있어서의 장애자와 고령자들의 Barrier Free에 관한 연구를 기본 목적으로 하고 있다 본 연구의 Eye-gaze Interface는 Eye Tech Digital System회사의 Quick Glance System를 사용한다 장애자와 고령자를 대상으로 한 사용자 평가 실험에 의해 실험을 진행 하였으며, 한글의 음운규칙에 관한 연구를 기초로 한글뿐만 아니라 영어, 일본어가 입력 가능한 입력 시스템을 제안한다. 이것은 컴퓨터 조작이 곤란한 장애자와 고령자가 일반인과의 자연스러운 커뮤니케이션이 가능하도록 한 것이다. 향후 Eye-gaze Interface를 이용한 응용분야 또한 게임, 영상, Eye Book, 자동차운전 둥 다양한 분야에 적용 가능하리라 기대된다.

• Journal of Korean Physical Therapy Science
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• v.27 no.2
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• pp.80-87
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• 2020

Background: The purpose of this study was to investigate the effect of the use of an alternative input device on the patient's work performance and satisfaction in patients with cerebral palsy who cannot use computers. Design: Case Series Description. Methods: The participant was one adult cerebral palsy. The three tasks were applied with an alternative input device (Quick-Glance), 1 session an hour, 3 times a week, a total of 12 times for 4 weeks. The assessment was using the Canadian Occupational Performance Measure (COPM). The evaluation was performed pre-test before the intervention, post-test after the last intervention, and follow-up after one month. Results: The COPM(Satisfaction and performance scores) showed 3 points for pre-test, 7 points for post-test, and 7 points for follow-up. Conclusion: Purposeful computer work activity, which is an alternative input device, has a positive effect on work performance and satisfaction of cerebral palsy patients who are difficult to use computer.

• Journal of the Ergonomics Society of Korea
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• v.31 no.2
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• pp.319-325
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• 2012

Objective: The aim of this study was to develop the assistive device for accelerator and brake pedals using bio-signals from the prefrontal lobe in the driving simulator and evaluate its performance. Background: There is lack of assistive devices for the driving in peoples with disabilities in Korea. However, if bio-signals and/or brain waves are used at driving a car, the people with serious physical limitations can improve their community mobility. Method: 15 subjects with driver's license participated in this study for experiment of driving performance evaluation in the simulator. Each subject drove the simulator the same course 10 times in three separated groups which use different interface controllers to accelerate and brake: (1) conventional pedal group, (2) joystick group and (3) bio-signal group(horizontal quick glance of the eyes and clench teeth). All experiments were recorded and the driving performances were evaluated by three inspectors. Results: Average score of bio-signal group for the driving in the simulator was increased 3% compared with the pedal group and was increased 9% compared with the joystick group(p<0.01). The subjects using bio-signals was decreased 44% in number of deduction compared with others because the device had the built-in modified cruise control. Conclusion: The assistive device for accelerator and brake pedals using bio-signals showed significantly better performance than using general pedal and a joystick interface(p<0.01). Application: This study can be used to design adaptive vehicle for driving in people with disabilities.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.9
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• pp.235-244
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• 2016

Automotive symbols are more widely needed for new, convenient driving devices in automobiles. Good automotive symbols should be detectable, identifiable at first glance, easily learned, recognizable, and produce quick responses after practice. In this paper, a methodology for developing and evaluating automotive symbols is suggested. It includes multiple tests, such as comprehension, perceptual quality, appropriateness, and integrated evaluation. 28 symbols were tested and evaluated by the suggested methodology for convenient driving systems, such as a lane departure warning system (LDWS), cruise control (CCS), and a collision warning system (CWS). Most of the KS R ISO 2575 symbols had higher scores of comprehension, perceptual quality, and appropriateness, but the sunroof and camera symbols had lower scores. Standard symbols with several new functions should be developed. This methodology could be useful for developing and evaluating automotive symbols.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.147-152
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• 2019

Infrastructure is rapidly growing as Internet business grows with the latest IT technologies such as IoT, BigData, and AI. However, in most companies, a limited number of people need to manage a lot of hardware and software. Therefore, Polestar Enterprise Management System(PEMS) is applied to monitor the system operation status, IT service and key KPI monitoring. Real-time monitor screening prevents system malfunctions and quick response. With PEMS, you can see configuration information related to IT hardware and software at a glance, and monitor performance throughout the entire end-to-end period to see when problems occur in real time.