• Journal of Korea Multimedia Society
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• v.16 no.1
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• pp.100-107
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• 2013

As the eBook market grows fast recently, various eBook viewer solutions such as hardware viewers and software readers came out to the market. We can, however, hardly find mobile eBook interfaces for the reading disabled people who have difficulties in reading for their visual impairment or learning disabilities, or dyslexia. An eBook viewer interfaces for the reading disabled people should be carefully and distinctively designed because the reading disabled people cannot use normal versions of eBook viewer. In this paper, we suggest a eBook viewer interface model to make the reading disabled people read eBooks easily. Depending on the type of the reading disabled people: the full blind, the almost blind, the just learning disabled, our model provides an adaptive interface to make them read eBooks effectively. In addition, unlike the existing simple audio books, we also support annotation systems to make the reading disabled people interact with eBook viewer. To show the effectiveness of our model, we implemented an eBook viewer prototype on an android-based mobile device. We are sure that our model and implementation can make the reading disabled people, who is 10% of all the domestic people, read eBooks effectively.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.457-458
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• 2023

본 논문에서는 실시간 영상처리 라이브러리인 OpenCV와 YOLO를 활용하여 사용자가 횡단보도 보행 시 안전을 제공해 주는 시스템을 개발하였다. 객체 인식 알고리즘인 YOLOv4-tiny를 이용하여 Ubuntu 환경에서 구현하였다. 데이터 셋은 인도 보행 영상 데이터 셋을 이용하였고 하드웨어는 Jetson Nano를 이용하여 구현하였다. 신호등의 색에 따른 보행 가능 여부를 카메라를 이용하여 전방의 장애물을 음성신호를 이용하여 사용자에게 전달한다. 제안된 시스템은 횡단보도와 신호등, 자동차와 같은 도로 위의 객체들로 설계된 알고리즘을 이용해 다양한 곳에서 사용이 가능하여 활용도가 높을 것으로 예상된다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.22 no.3
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• pp.173-188
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• 2011

This research intended to identify empirical recommendations for designing the DAISY service interface and used a case-based method. The case of this research was LG Digital Talking Book Library(http://voice.lg.or.kr) of LG Sangnam Library. A group of experts evaluated the current DAISY interface serviced by the web. After evaluation, major recommendations were suggested and these recommendations were used to develop the new DAISY Interface. Major recommendations were consideration of the reading flow of the screen-reader program, prevention of perception as an error about the time delay, development of web-based software, support for convenient functions and prevention of shortcut key overlap and so on.

• The Journal of the Korea Contents Association
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• v.7 no.4
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• pp.199-205
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• 2007

Most of information and communication assistance machinery and tools for disorder people of Occupied are machinery and tools for a visual impairment person and software, The things which can apply to only a specification disorder type and a specification disorder part are most, A special keyboard or a special mouse device of the handicapped person that disorder rank is comparatively the hardness makes the mainstream. It is reported in diffusion rate being very low if I compare this with total disorder population. I study new 1 plan which it can be applied to various disorder types and disorder parts through an intelligent special input device in a study of a book and, I designed this at the real standard that I could manufacture and incarnated it. In addition, I suggested this in a base for a design of a universal supporting input device and suggestion for the side of incarnation plan and a future study direction.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.40-45
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• 2006

본 연구에서는 사지마비 장애인이 활용할 수 있는 동작을 이용하여 마우스, 문자 입력, 전동휠체어 제어 등에 활용될 수 있는 인터페이스 기술을 개발하였다. 사지마비 장애인이 활용 가능하면서도 착용이 쉽고 데이터 처리가 용이한 동작으로서 이물기 동작을 제안하였다. 좌측, 우측 및 양측 이물기 동작 및 이물기 시간의 조절을 통해 사지마비 장애인의 경우에도 다양한 명령어 형성이 가능하다. 이때, 이물기 동작의 인식은 관자놀이 부근에 위치한 관자근에서의 근전도 신호를 이용하였다. 본 연구에서는 데이터를 획득하여 전송하고 처리하기 위한 하드웨어와 소프트웨어를 함께, 전동휠체어 제어를 위한 응용 시스템도 개발하였다. 또한 개발된 시스템을 사지마비 장애인에게 적용하여 그 효용성을 평가하였다.

• Journal of the HCI Society of Korea
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• v.7 no.2
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• pp.49-56
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• 2012

The camera-based mobile applications such as color, pattern and object reading can improve the living quality of blind people. However currently available camera-based applications are uncomfortable for the blind, since these applications do not reflect accessibility requirements of the blind especially on touch screen. We investigated accessibility requirements about rapidly growing camera-based mobile applications on touch screen devices for the blind. In order to identify accessibility requirements, we conducted a usability testing for color reading applications with three different types of interfaces on Android OS. The results of the usability testing were as follows: (1) users preferred short depth of menu hierarchy, (2) the initial audio help was more useful than just-in-time help, (3) users needed both manual and automatic camera shooting modes although they preferred manual to automatic mode, (4) users wanted the OS supported screen reader function to be turned off during the color reading application was running, and (5) users required tactile feedback to identify touch screen boundary. We designed a new user interface for blind people by applying the identified accessibility requirements. From a usability testing of the new user interface with 10 blind people, we showed that the identified accessibility requirements were very useful accessibility guidelines for camera-based mobile applications.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.4 no.1
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• pp.35-43
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• 2000

This paper was studied on developmental direction of telecommunications for disabilities welfare. Method of this study is delphi method. Persons with disabilities is classed as motor disability, visual handicap, hearing impairment, and language and speech disorders. Persons with motor disability is needs as follow, speed recognition technology, video recognition technology, breath capacity recognition technology. Persons with visual handicap is needs as follow, display recognition technology, speed recognition technology, text recognition technology, intelligence conversion handling technology, video recognition - speed synthetic technology. Persons with hearing impairment and language - speech disorders is needs as follow, speed signal handling technology, speed recognition technology, intelligence conversion handling technology, video recognition technology, speed synthetic technology the results of this study is as follow: first, disabilities telecommunications organization must be constructed. Second, persons with disabilities in need of universal service. Third, Persons with disabilities in need of information education, Fourth, studying for telecommunications in need of support. Fifth, small telecommunications company in need of support. Sixth, software industry in need of new development. Seventh, Persons with disabilities in need of standard guideline for telecommunications.

• Journal of Biomedical Engineering Research
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• v.24 no.5
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• pp.411-419
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• 2003

This paper aims at developing 'gyro-mouse' which provides decent and comfortable human-computer interface that supports the usage of such software as an internet-browser in PC for the people paralyzed in upper limbs. This interface operates on information collected from head movement to get the cursor control. The interface is composed of two modules. One is hardware module in which the head horizontal and vertical angular velocities are detected and transmitted into PC. The other is a PC software that translates the received data into movement and click signals of the mouse. The ANN (artificial neural network) learns the quick nodding pattern of each user as click input so that it can provide user-friendly interface. The performance of the system was evaluated by three indices that are click recognition rate. error in cursor position control. and click rate of the moving target box. The performance result of the gyro-mouse was compared with that of the optical-mouse to assess the efficiency of the gyro-mouse. The average click recognition rate was 93%, average error in cursor position control was 1.4∼5 times of optical mouse. and the click rate with 50 pixels target box was 40%(30 clicks/min) to that of optical mouse. The click rate increased monotonously with the number of trial from 35% to 44%. The suggested system is expected to provide a new possibility to communicate with the society.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.8 no.4
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• pp.275-281
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• 2014

The purpose of this study was development and evaluation of putting training system with specialized guides which were adjustable its width and changeable its distance from the ball. The system hardwares that used in this study were made by LEGO NXT and Tetrix set. The system software was made by LabVIEW ver. 2010. The subjects were organized in non-experts(10persons) and KPGA(5persons) players. The putting training schedule was composed of 10 sets and each sets were identically same, which were organized in 4 different width of its guide at 3 different distance from the ball hitting spot, 3 repetition each. The speed/acceleration in wrist area and movement in head area were both reduced by the putting training. Most of testees submitted positive comments in aspect of concentration and motivation. This training method which had changeable width and distance will be able to adapt easily to another sports for the handicapped and the elderly such as ParkGolf or Gateball.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.5
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• pp.1001-1010
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• 2021

Normal people are not deeply aware of their dependence on sight when eating. However, since the visually impaired do not know what kind of food is on the table, the assistant next to them holds the blind spoon and explains the position of the food in a clockwise direction, front and rear, left and right, etc. In this paper, we describe the development of a meal assistance system that recognizes each food image and announces the name of the food by voice when a visually impaired person looks at their table using a smartphone camera. This system extracts the food on which the spoon is placed through the YOLO model that has learned the image of food and tableware (spoon), recognizes what the food is, and notifies it by voice. Through this system, it is expected that the visually impaired will be able to eat without the help of a meal assistant, thereby increasing their self-reliance and satisfaction.