• Journal of Korean Library and Information Science Society
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• v.30 no.1
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• pp.93-118
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• 1999

This study analyzes the problem of braille library information services for visually handicapped and suggests the alternatives to solve the identified problems. This study uses a case study method and Pusan Braille Library was selected as a case. The data for this study were collected by the following two methods : (1) document analysis; (2) interviews with 1 staff and 6 users in the Pusan Braille Library. The emphasis of this study was on analyzing the problem; in braille library services, particularly from the following three aspects : (1) both quality and quantity of materials; (2) the facilities; (3) the human factors staffs and volunteers. Suggestion are made to improve the quality in information services of braille libraries - particularly, producing many diskette materials, establishing collection development policy of diskette materials, pervading computers and its facilities, reeducating braille library staffs to cope with rapidly developing information technology.

• Journal of IKEEE
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• v.24 no.2
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• pp.378-384
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• 2020

The location information of the people or mover is essential for supporting various smart mobility services in railway stations which are mostly underground. For this purpose, a smart braille block is proposed to identify the location of the mover of the people. In this paper, the frequency characteristics of each material of the upper and lower parts of the braille block are analyzed to examine the appropriate materials for railway history. In addition, the guidelines for actual manufacturing were derived by analyzing the separation distance between two RF sensors in the smart braille block. As a result of analysis through the characteristic analysis in this paper, after selecting the material suitable for the construction site when the smart braille block is applied, the performance change of the RF system, especially the antenna that greatly influences the RF performance, must be reviewed in advance. It seems to have to be applied after checking through.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.10 no.3
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• pp.215-220
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• 2016

Music braille is made up of more systematic and various symbols compared with text braille. Therefore, the translation of braille music requires extensive knowledge of the music and the braille symbols. Because currently the computer program for the text braille has already developed, we don't need any help from the braille translator. However, the translation of music braille is hard without the help of a professional music braille translator, because the translation computer program is not perfect. The current situation is that the music braille translator reads the music score and translates it into the braille himself. In this paper, we designed and implemented the "Braille Music Converter", you can implement a person does not understand the braille translation into music braille well. It includes translation into text braille for the lyrics processing and rest, octave, key signature, time signature, tie, slur, repeat mark was confirmed that the successful conversion to the actual music score.

• Journal of Korea Society of Industrial Information Systems
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• v.28 no.4
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• pp.1-9
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• 2023

In this paper, we propose a method to recognize the braille blocks for embedded devices in real time through deep learning. First, a deep learning model for braille block recognition is trained on a high-performance computer, and the learning model is applied to a lightweight tool to apply to an embedded device. To recognize the walking information of the braille block, an algorithm is used to determine the path using the distance from the braille block in the image. After detecting braille blocks, bollards, and crosswalks through the YOLOv8 model in the video captured by the embedded device, the walking information is recognized through the braille block path discrimination algorithm. We apply the model lightweight tool to YOLOv8 to detect braille blocks in real time. The precision of YOLOv8 model weights is lowered from the existing 32 bits to 8 bits, and the model is optimized by applying the TensorRT optimization engine. As the result of comparing the lightweight model through the proposed method with the existing model, the path recognition accuracy is 99.05%, which is almost the same as the existing model, but the recognition speed is reduced by 59% compared to the existing model, processing about 15 frames per second.

• Journal of Satellite, Information and Communications
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• v.11 no.2
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• pp.14-17
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• 2016

This paper describes the implementation of automatic number-braille converter based on image processing for the blind people. The algorithm is consists of four main steps. First step is binary image conversion of the input image obtained by the camera. the second step is segmentation operation by means of dilation and labelling of the character. Next step is calculation of cross-correlation between segmented text image and pre-defined text-pattern image. The final step is generation of brail output which is relevant to input image. The computer simulation result was showing 91.8% correct conversion rate for arabian numbers which is printed in A4-sheet and practical possibility was also confirmed by using implemented automatic number-braille converter based on DSP image processing board.

• KOREAN POULTRY JOURNAL
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• s.207
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• pp.66-67
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• 1987

`86본회 중점사업인 양계산물 소비홍보사업의 일환으로 10. 1부터 10. 30까지 양계산물 소비촉진 홍보표어를 현상공모하여 전국에 걸쳐 공무원, 교사, 학생, 주부 등이 응모 총 1,482건이 접수되었다. 그중 1$\cdot$2차의 엄정한 심사를 거쳐 최우수상의 명예에는 유점자씨(39세. 충남 대전시 중구 도마1동 84-2)의 $\ulcorner$알먹고 키자랑 닭먹고 힘자랑$\lrcorner$이 차지했다.' 본지는 지난 12월 11일 본회회의실에서 최우상을 차지한 유점자씨 가족을 만나보았다.

• Proceedings of the IEEK Conference
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• 2003.07c
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• pp.2907-2910
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• 2003

시각장애인의 보행을 보조할 목적으로 설치된 점자보도블록은 보행방향과 정지 정보를 제공하지만, 현재 위치에 대한 정보는 제공 할 수 없어서 보행 보조물로써의 기능이 매우 제한되어 있다. 본 연구에서는 최근 IT 기술중 하나인 RFID(Radio Frequency Identification)를 내장한 새로운 개념의 점자보도블록과 이를 활용하여 보행을 유도할 수 있는 시스템을 제안하고자 한다. 점자보도블록에는 RFID 태그와 안테나를 삽입하여 현재 위치에 대한 정보를 저장하며, 백색지팡이에는 이 정보를 읽어 들이기 위한 리더기를 설치한다. 현재위치에 대한 정보는 PDA로 전송되어 해당되는 음성정보를 시각장애인에게 전달하게 된다. 제안된 시스템을 통해 시각장애인은 타인의 도움 없이 현재 자신이 위치한 곳에 대한 정보를 얻고, 올바른 곳으로 보행중인지를 판단할 수 있게 되므로, 시각장애인의 보행권과 사회활동권등 복지 증진에 효과가 있을 것이다.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.829-832
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• 1998

In this paper, We have developed the Internet web browser for the blind and visually impaired person. The Internet Web browser system consists of personal computer connected to Internet, braille display, voice synthesis devices for character information, tactile display for the representation of web image and braille printer for web page printing. We convert character in the web page to braille and print it to braille display. The image in the web page is printed with tactile display actuated by solenoid. The blind can acess the Internet web site with this web browser system and understand the Internet information.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.977-979
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• 2022

본 논문에서는 시중에서 판매되는 점자학습 기기의 단점들을 보완한 점자학습 보드를 제안한다. 학습 보드는 다음과 같은 기능을 수행한다. 첫째, 자음, 모음 등의 기초적인 글자 학습, 단어와 문장 학습, 게임학습, 총 세 가지의 학습 모드를 지원하는 기능. 둘째, 사용자의 학습 데이터를 분석하여 마지막 학습 일자, 학습 진행 상황 등의 다양한 요소를 고려한 학습, 복습 내용을 자동으로 업로드하는 기능. 셋째, 기기에 연동된 애플리케이션을 통해 학습상태를 확인하고 기기를 조작하는 기능. 넷째, 학습 보드와 앱의 음성안내, 생체인식을 사용한 로그인, 음성인식을 통한 언어 변환, 보드 자동 교체 등의 사용자 편의성을 위한 기능이다. 본 논문은 이를 통해 점자학습에 대한 접근성을 높여 시각장애인의 문맹률 감소를 목표로 한다.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.2
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• pp.1-8
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• 2011

In this paper, we propose a haptic display system that can convert Braille and tactual map(braille map) to tactile information recognizable through sense of touch almost in real-time. The proposed system consists of a haptic display hardware device, which actually delivers tactile signal to visually impaired people, and a device control software program, which converts Braille and tactile information to tactile signal and transfers it to the hardware device. Experimental evaluations of the proposed system were performed with 10 visually impaired persons. Experimental results show that the proposed system can provide similar Braille recognition rate and speed to those of existing Braille information devices. In addition, the proposed system converts tactile information to tactile signal under maximum 1.1 seconds, so that it can provide graphic information in almost real-time which is not possible with existing tactile devices, such as Braille printer.