• 한국산학기술학회논문지
• /
• 제10권9호
• /
• pp.2221-2226
• /
• 2009

본 논문에서는 태양전지를 기본 전력공급원으로 사용하는 대형건물용 옥외간판 LED 표식장치를 시스템을 구현하였다. 부하 발전 배터리 용량을 산정하고, 상용 예비전력을 도입한 계통연계형 태양광발전시스템을 설계하였다. 표식장치인 LED 부하에 대한 사전 휘도 시뮬레이션 및 균일성 검사를 거친 후, 이를 태양광발전시스템과 함께 설치하였다. 태양전지-LED 표식장치 현장 시험운영을 통하여 시스템의 신뢰성과 성능 및 제반 문제점을 파악하였다.

• International Journal of Contents
• /
• 제12권3호
• /
• pp.34-41
• /
• 2016

A traditional village is cultural property where old buildings and traditions are concentrated and also where indigenous traditional cultures can be recognized and experienced directly or indirectly. In addition, traditional villages have been recognized as precious resources to revitalize regional economies through tourism. Currently, signage systems have been developed as for ordinary tourist sites or cities, and concepts or methods for sign system for traditional villages have not yet been established. Therefore, it is necessary to develop disaster prevention-based signage to prevent large-scale disasters, to guarantee the safety of residents, and to increase the satisfaction of visitors in traditional villages as precious resources. A case study is conducted to apply the proposed sign system for traditional villages in Korea and Japan as a tourist-oriented sign system that has been accomplished in Korea and a large disaster-oriented sign system developed with residents as a priority in Japan. The disaster prevention sign system considers the residents since residents are victims when a disaster happens, and guideline to increase the efficacy and satisfaction are suggested. However, this study has definite limits in sucring objectivity because the objects of study are insufficient, and the development of the sign system based on effective disaster prevention considering the features of traditional villages will continue in the future.

• 한국멀티미디어학회논문지
• /
• 제19권2호
• /
• pp.252-263
• /
• 2016

Road sign is an important street furniture that gives some information such as road conditions, driving direction and condition for a driver. Thus, road sign is a major target of image recognition for self-driving car, ADAS(autonomous vehicle and intelligent driver assistance systems), and ITS(intelligent transport systems). In this paper, an enhanced road sign recognition system is proposed for MMS(Mobile Mapping System) using the single camera and GPS. For the proposed system, first, a road sign recognition scheme is proposed. this scheme is composed of detection and classification step. In the detection step, object candidate regions are extracted in image frames using hybrid road sign detection scheme that is based on color and shape features of road signs. And, in the classification step, the area of candidate regions and road sign template are compared. Second, a Geo-marking scheme for geo-content that is consist of road sign image and coordinate value is proposed. If the serious situation such as car accident is happened, this scheme can protect geographical information of road sign against illegal users. By experiments with test video set, in the three parts that are road sign recognition, coordinate value estimation and geo-marking, it is confirmed that proposed schemes can be used for MMS in commercial area.

• 대한임베디드공학회논문지
• /
• 제14권3호
• /
• pp.133-142
• /
• 2019

The existing auxiliary communicating aids for the hearing-impaired have an inconvenience of using additional expensive sensing devices. This paper presents a hand image detection based algorithm to interpret the sign language of the hearing-impaired. The proposed sign language recognition system exploits the hand image only captured by the camera without using any additional gloves with extra sensors. Based on the hand image processing, the system can perfectly classify several numeric sign language representations. This work proposes a simple lightweight classification algorithm to identify the hand image of the hearing-impaired to communicate with others even further in an environment of complex background. Experimental results show that the proposed system can interpret the numeric sign language quite well with an accuracy of 95.6% on average.

• 한국멀티미디어학회논문지
• /
• 제8권6호
• /
• pp.768-775
• /
• 2005

For sign languages are main communication means among hearing-impaired people, there are communication difficulties between speaking-oriented people and sign-language-oriented people. Automated sign-language recognition may resolve these communication problems. In sign languages, finger spelling is used to spell names and words that are not listed in the dictionary. There have been research activities for gesture and posture recognition using glove-based devices. However, these devices are often expensive, cumbersome, and inadequate for recognizing elaborate finger spelling. Use of colored patches or gloves also cause uneasiness. In this paper, a vision-based finger spelling recognition system is introduced. In our method, captured hand region images were separated from the background using a skin detection algorithm assuming that there are no skin-colored objects in the background. Then, hand postures were recognized using a two-dimensional grid analysis method. Our recognition system is not sensitive to the size or the rotation of the input posture images. By optimizing the weights of the posture features using a genetic algorithm, our system achieved high accuracy that matches other systems using devices or colored gloves. We applied our posture recognition system for detecting Korean Sign Language, achieving better than $93\%$ accuracy.

• 디지털콘텐츠학회 논문지
• /
• 제8권4호
• /
• pp.475-481
• /
• 2007

본 연구는 공공공간의 하나인 천안역을 중심으로 사인에 있어서 분포 및 종류를 분류하고 구간별로 조사 분석한 연구이며, 그 결과로 구간별 설치된 사인의 종류에 대한 문제, 사인의 설치에 있어서 위치에 대한 문제, 밀집되어 설치된 정보(사인)에 대한 문제가 나타났다. 이에 각 구간별 설치된 정보(사인)의 차이와 밀집되게 설치되어 있는 정보에서 각 장소에 고르게 분배되는 정보제공의 필요성과, 사인의 무계획적인 설치에서 이용자의 행동을 고려한 적절한 위치의 정보 설치가 요구된다. 따라서 사인의 설치에는 장소마다 보행자에게 필요한 정보의 파악이 우선되어야 하며 그 장소마다 적절한 정보의 제공으로 이용자에게 안정적인 환경 부여가 필요하다.

• 한국실내디자인학회논문집
• /
• 제28호
• /
• pp.100-108
• /
• 2001

The purpose of this study is to develop recommendation of sign system and color codes in making the public interior environment more accessible for the visually impaired persons. The appropriate guidelines in designing the sign system and the color codes in the public interior environment can increase the accessibility, the mobility and the safety for the visually impaired persons including the increasing elderly. By selecting the effective sign system much more desirable results can be brought: Improvement of accessibility, mobility, increase of safety, work efficiency and the psychological stability. Sign system and the color is more important for the weak-sighted people than the normal-sighted in way finding and the orientation strategies. 53 visually impaired persons participated for this study, the answers of the questionaires by the weak-sighted persons are focused on in this research. The data, the needs of users is analysed on the basis of users-oriented. The result of this study can be considered as a basic direction of sign system design and color codes in our codes in our public environment for all people especially visually impaired persons.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2006년도 추계학술대회 논문집
• /
• pp.1567-1574
• /
• 2006

To prevent safety accidents such as injury or death from falling by blocking platforms from trains, the Seoul Metropolitan Subway Corp. have gradually installed screen doors in platforms of 115 subway stations in Seoul on lines 1, 2, 3, and 4. Installation in nine areas among those has been completed and screen doors are being operated as a model operation. Traffic signs should be clear for users. The essential functions of signs should be fully investigated from the aspect of user as well as the visual beauty and recognition. Signs should be able to provide users with information regarding location, position, directions, etc. Particularly, safety and convenient signs should be visually and sensually correlated. However, the entire screen doors in platforms installed in line 2 subway in Seoul are used for commercial advertisement, consequently, the functions and roles as public signs are not fulfilled aggravating inconvenience for users. In this study, cases have been studied to investigate requirements for user-oriented sign system in platform and public sign space to fulfill the functions of sign system in platform. Using an anthropometry approach, the study aimed to obtain the space to install the sign system and to systemize necessary and sufficient conditions for user-oriented system for platform in which screen doors have been installed using. The study suggests fundamental information to obtain the space of public sign system on the entire screen door.

• 한국디자인학회:학술대회논문집
• /
• 한국디자인학회 2003년도 가을학술발표대회
• /
• pp.142-143
• /
• 2003

• 융합정보논문지
• /
• 제11권5호
• /
• pp.17-22
• /
• 2021

청각장애인들은 수어통역 없이 상담서비스를 이용하기에는 어려움이 있다. 수어 통역사 인력이 많이 부족하여 수어 통역사까지 상담이 연결되는데 많은 시간이 걸리거나 연결이 되지 않는 경우가 많이 발생하고 있다. 이에 본 논문에서는 OpenCV와 CNN(Convolutional Neural Network)을 이용하여 수어를 영상으로 촬영하고 수어 동작을 인식하여 수어가 뜻하는 의미를 텍스트 형태의 데이터로 변환하여 사용자에게 제공하는 시스템을 제안한다. 상담사는 저장된 수어번역 상담내용을 열람하여 상담을 진행할 수 있다. 전문 수어 통역사가 없어도 상담이 가능하여 수어 통역사를 기다려야 하는 부담을 줄일 수 있다. 제안 시스템을 청각장애인 상담서비스에 적용할 경우 상담 효과의 향상과 향후 청각장애인 상담에 관한 학문적 연구를 촉진하는 계기가 될 것으로 기대된다.