• Title/Summary/Keyword: pedestrian environment

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Detection of Pavement Borderline in Natural Scene using Radial Region Split for Visually Impaired Person (방사형 영역 분할법에 의한 자연영상에서의 보도 경계선 검출)

  • Weon, Sun-Hee;Kim, Gye-Young;Na, Hyeon-Suk
    • Journal of the Korea Society of Computer and Information
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    • v.17 no.7
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    • pp.67-76
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    • 2012
  • This paper proposes an efficient method that helps a visually impaired person to detect a pavement borderline. A pedestrian is equipped with a camera so that the front view of a natural scene is captured. Our approach analyzes the captured image and detects the borderline of a pavement in a very robust manner. Our approach performs the task in two steps. In a first step, our approach detects a vanishing point and vanishing lines by applying an edge operator. The edge operator is designed to take a threshold value adaptively so that it can handle a dynamic environment robustly. The second step is to determine the borderlines of a pavement based on vanishing lines detected in the first step. It analyzes the vanishing lines to form VRays that confines the pavement only. The VRays segments out the pavement region in a radial manner. We compared our approach against Canny edge detector. Experimental results show that our approach detects borderlines of a pavement very accurately in various situations.

A Study on Characteristics of On-Street Parking on Local Streets (국지도로의 노상주차 특성에 관한 연구)

  • Kim, Ki-Hyuk;Lee, Sang-Inn
    • Journal of Korean Society of Transportation
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    • v.22 no.7 s.78
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    • pp.33-40
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    • 2004
  • This study aims to provide guidelines for the selection of on-street parking spot on local streets considering conditions of surrounding area and characteristics of traffic generation. This guideline provides the method which determine required roadway width for planning and design of local streets. It is necessary to identify factors for the location selection analysis. This research team selects 12 case study areas to investigate traffic environment on the sites for this analysis. Most of factors which influence on-street parking are found to have a qualitative data format except traffic volume and pedestrian movement data. Quantification theory II which is known to be suitable for qualitative analysis has been applied to identify the meaningful variables for dependent variable. In addition, discriminant analysis has performed to verify the correlation for each variable with hit ratio. Road width, traffic volume, street traders and their heavy packages, and illegally parked vehicle are found to be most significant factors for selection of on-street parking location. Therefore, it is necessary to consider traffic volume generated from massive residential complex and traffic volume for outside and above-mentioned factors for installation of on-street parking facility in the case of new road construction or road width widen.

Application of Culture Inclusiveness Concept for Hongdae-ap Case (홍대앞 사례를 통한 문화적 포용성 개념의 적용)

  • Park, Minha;Lee, Byungmin
    • Journal of the Economic Geographical Society of Korea
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    • v.22 no.4
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    • pp.539-554
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    • 2019
  • This study suggests a conceptualization model of 'cultural inclusiveness' organically connected to social inclusiveness, by expanding the implications of urban inclusiveness to the domain and relationship. Based on the process of necessity of relation, connection of space, and execution of act, the cultural inclusiveness could be connected to the formation of organic/learning relation, the creation of openness focusing on public space, and the practice of diverse subjects. Concretely, the concept of cultural inclusiveness is applied to the case of 'Hongdae-ap'. The recent Hongdae-ap is showing the value of coexistence such as the establishment of environment that could protect the diversity of individual subjects and groups(artists, residents, government officials, students, cultural activists, citizens, tourists, and etc.), the formation of public space such as 'Hongdae-up playground', 'pedestrian-friendly street', and 'Gyeongui-Line book street', social network service & horizontal network, and access.

A Study on the Planning Consideration for the Realization of Sustainable Housing - In the Aspect the Residents' Opinions at the Pilot Project 'Livable City Making' in Busan - (지속가능한 주거지 실현을 위한 계획적 고려사항 - 부산지역 '살고싶은 도시만들기' 실천사례 거주자 의견을 중심으로 -)

  • Kim, Myo-Jung;Jeong, Ji-Seok
    • Journal of the Korean housing association
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    • v.22 no.4
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    • pp.103-112
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    • 2011
  • The purpose of this study was to determine the incomplete aspects of the government pilot project 'Livable City Making' Also, the study was conducted to consider a plan that residents will satisfy for the realization of the project. The study used a case study and a survey method in research process. For the case study, two projects in Busan that have similar planning were chosen. The contents of the survey included the residents' interest in their housing area, their recognition and opinions of the pilot project, their satisfaction about the environmental alterations, and their thought about conditions of sustainable housing. The main results of this study were as follows. First, the residents were satisfied with the alteration of the street space and the provision of green and open spaces. Meanwhile they revealed that the preservation of the natural environment and the vitalization of community are insufficient. Second, they also believed that the construction of the pedestrian streets, the provision of parking lots, and the remodeling of the deteriorated buildings are incomplete. Third, the residents believed that the following provisions need to be made for successful sustainable housing waste discharge needs to be minimized, facilities need to be used for saving energy, opportunities for employment need to be provided within their housing areas, and safe street spaces and comfortable traffic systems need to be provided.

Characteristics of Citizens' Access to Outdoor Exercise Places by Using the GIS - Focused on the Users of the Outdoor Exercise Equipment Installed in Parks, Seoul - (GIS를 이용한 도시민의 야외 운동장소 접근 특성 분석 - 서울시 공원의 운동기구 사용자를 중심으로 -)

  • Lee, Yeunsook;Gu, Naeun;Lee, Dongjoo
    • KIEAE Journal
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    • v.13 no.2
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    • pp.67-76
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    • 2013
  • The purpose of this study is to analyze the accessibility to the place for outdoor exercise. For that, the departure (resident) location of the users of outdoor exercise equipment within 12 parks in Seoul have been investigated. A total of 1,733 people have been surveyed during the two-week period between Aug.2 and Aug. 15 and 815 cases were analyzed. We also investigated demographic characteristics, access method and related factors such as location, climate and visiting time. The results were coded through ArcGis program and the accessibility to each exercise location, difference in regional accessibility and accessibility characteristics in terms of climate and time have been analyzed. The results are as follows: First, visitors to the Han River start from the places further than the visitors to the streamlines. Second, the average moving distance is longer for the users aged under-60 than for the users aged 60 and over to reach the exercise place. And the average moving distance for visitors to the Han River destination is the longest with 748 meters, followed by 203 meters for general parks and 92 meters for streamline parks, respectively. Third, in each non-waterfront parks, the moving distance by users under-60 was longer by about 230 meters than that by users 60 and over. Fourth, exercisers in the weekend travel more by 244 meters than those during the midweek users to reach the exercise place. Fifth, the number of visitors to the Han River increased in the weekend while visitors to the streamlines decreased in the same period. Sixth, the traveling length for bicycle users is three times as much as that for pedestrian visitors. And the departure locations of bicycle users were more widely distributed.

Heavy Metal Contamination in Roadside Sediments within the Watershed of the Hoidong Reservoir in Busan City (부산시 회동저수지 집수분지 내 주요 도로변 퇴적물의 중금속 오염 평가)

  • Youm Seung-Jun;Lee Pyeong-Koo;Yeon Kyu-Hun;Kang Min-Ju
    • Economic and Environmental Geology
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    • v.38 no.3 s.172
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    • pp.247-260
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    • 2005
  • Extractable concentrations (0.1 N & 1.0 N HCI) of heavy metals in roadside sediments are lower than guidelines for soil recommended by Ministry of Environment. Heavy traffic areas (such as No. 7 national road) show high contents of heavy metals, especially, at curved areas, gully pot, crackdown areas on overspeed, pedestrian crossing etc. Fine fractions $(<63\;{\mu}m)$ of roadside sediments have the highest concentrations of heavy metals, but mass loadings of heavy metal are determined by coarse fractions $(>100{\mu}m)$, due to washing out of fine fraction sediment by runoff water. Proper treatment facilities are needed to control the inflow of fine roadside sediments from No. 7 national road and bridge such as Hanmul bridge.

A Study on the Actual Condition and Reduction Plan of Traffic Accidents for the Elderly (노인교통사고 실태 및 감소방안에 관한 연구)

  • Sung, Su-Young;Kim, Sang-Woon
    • The Journal of the Korea Contents Association
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    • v.20 no.1
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    • pp.437-447
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    • 2020
  • Following the extension of human life expectancy, the number of elderly traffic accidents that have been increasing at a rapid pace since 2018 has also emerged as a social problem. The traffic accident rate among those aged 65 and older is increasing, but traffic safety policies are insufficient. Based on the analysis of traffic accident status for senior citizens and traffic accident for the past five years from 2014, the reduction plan is to be presented in three main aspects. First, the system needs systematic management by strengthening the system of senior citizens' transport policy departments and driver's license for senior citizens in government agencies, such as the United States, Britain and Japan, from an institutional perspective, so that the walking time and crosswalk traffic environment for the vulnerable should be improved from an environmental perspective. In addition, in human terms, the ability to cope with real-time changes in traffic conditions should be enhanced by training transportation safety experts to secure the effectiveness of education for elderly drivers and by strengthening safety education for those with driver's license and expanding experienced traffic safety facilities to enhance the ability of senior citizens to cope with the changing traffic conditions in real time.

Position Improvement of a Mobile Robot by Real Time Tracking of Multiple Moving Objects (실시간 다중이동물체 추적에 의한 이동로봇의 위치개선)

  • Jin, Tae-Seok;Lee, Min-Jung;Tack, Han-Ho;Lee, In-Yong;Lee, Joon-Tark
    • Journal of the Korean Institute of Intelligent Systems
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    • v.18 no.2
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    • pp.187-192
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    • 2008
  • The Intelligent Space(ISpace) provides challenging research fields for surveillance, human-computer interfacing, networked camera conferencing, industrial monitoring or service and training applications. ISpace is the space where many intelligent devices, such as computers and sensors, are distributed. According to the cooperation of many intelligent devices, the environment, it is very important that the system knows the location information to offer the useful services. In order to achieve these goals, we present a method for representing, tracking and human Jollowing by fusing distributed multiple vision systems in ISpace, with application to pedestrian tracking in a crowd. This paper describes appearance based unknown object tracking with the distributed vision system in intelligent space. First, we discuss how object color information is obtained and how the color appearance based model is constructed from this data. Then, we discuss the global color model based on the local color information. The process of learning within global model and the experimental results are also presented.

Real-time Sign Object Detection in Subway station using Rotation-invariant Zernike Moment (회전 불변 제르니케 모멘트를 이용한 실시간 지하철 기호 객체 검출)

  • Weon, Sun-Hee;Kim, Gye-Young;Choi, Hyung-Il
    • Journal of Digital Contents Society
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    • v.12 no.3
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    • pp.279-289
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    • 2011
  • The latest hardware and software techniques are combined to give safe walking guidance and convenient service of realtime walking assistance system for visually impaired person. This system consists of obstacle detection and perception, place recognition, and sign recognition for pedestrian can safely walking to arrive at their destination. In this paper, we exploit the sign object detection system in subway station for sign recognition that one of the important factors of walking assistance system. This paper suggest the adaptive feature map that can be robustly extract the sign object region from complexed environment with light and noise. And recognize a sign using fast zernike moment features which is invariant under translation, rotation and scale of object during walking. We considered three types of signs as arrow, restroom, and exit number and perform the training and recognizing steps through adaboost classifier. The experimental results prove that our method can be suitable and stable for real-time system through yields on the average 87.16% stable detection rate and 20 frame/sec of operation time for three types of signs in 5000 images of sign database.

The Influence Factors Analysis of The Street Revaitalization by Spatial Distribution of Small Retail Businesses' Classification in Seoul City (서울시 업종별 점포의 공간분포가 가로활성화에 미치는 영향요인 분석)

  • Won, You Ho;Choi, Chang Gyu;Lee, Joo Hyung
    • Spatial Information Research
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    • v.22 no.6
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    • pp.81-90
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    • 2014
  • This study analyzed an impact relationship between the variable of street based on the walking enhancement factors and the street revitalization. In detail, walking enhancement factors include a physical environment, accessibility and a density which was derived from previous studies. In addition, This study also analyzed the diversity of the profession which was emphasized by Jacobs(1961) and the influence of the specific space on street revitalization that was emphasized by Ray Oldenburg (1989) and Richard MacCormac (1983). The anlaysis by types showed the walking enhancement factors, including street envirnoment, accessibility, density and diversity, which were emphasized by Jacobs(1961) possessed similararites between weekdays and weekends. On contrast, the spatial distribution of stores showed a major difference of influences on street revitalization between weekdays and weekends as Ray Oldenburg (1989) and Richard MacComac (1983) has insisted.