• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권5호
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• pp.1766-1784
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• 2014

Finger vein images contain rich oriented features. Local line binary pattern (LLBP) is a good oriented feature representation method extended from local binary pattern (LBP), but it is limited in that it can only extract horizontal and vertical line patterns, so effective information in an image may not be exploited and fully utilized. In this paper, an orientation-selectable LLBP method, called generalized local line binary pattern (GLLBP), is proposed for finger vein recognition. GLLBP extends LLBP for line pattern extraction into any orientation. To effectually improve the matching accuracy, the soft power metric is employed to calculate the matching score. Furthermore, to fully utilize the oriented features in an image, the matching scores from the line patterns with the best discriminative ability are fused using the Hamacher rule to achieve the final matching score for the last recognition. Experimental results on our database, MMCBNU_6000, show that the proposed method performs much better than state-of-the-art algorithms that use the oriented features and local features, such as LBP, LLBP, Gabor filter, steerable filter and local direction code (LDC).

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.561-566
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• 2011

In general, the early stage of urban renewal such as preparing a master plan and processing administrative works including planning permission are conducted by local governments in Korea. The local governments need to review the status of projects that are undergone in other local governments' territories. However, no integrated information system to manage information to this end at the level of nation exists in Korea. If the system would be developed, it may support central government to obtain information on required resources at the national level. In addition, local governments can gain guidance on the process and recognize potential problematic situations from others experience. The system should include functions to collect data on project summary, cost and schedule of projects according to local governments. The expected effects from using the information system are as following. First, information generated from project practice become more credible on account of management at the national level. Because the authorized party such as system administrative agents of governments are responsible for collecting and managing data. Second, the unified information system with no regard to the place where projects progresses reduces the efforts for accumulating reference data for aiding local governments decision making by providing appropriate information timely. Also, enhanced information accessibility for stakeholders make the project process clear. Finally, oversight management is enforced with visualization technology adopted in the system, presenting master plan and mass model including information on usage by floors and progressing information graphically. Ultimately, potential challenges can be anticipated by considering records accumulated from other local governments' projects. This paper presents concept, functionalities, and architecture of information system enabling to manage data from individual projects and aggregate those for oversight management for local and central governments. As a part of systems analysis, general requirements of briefing system for governments and necessary data fields to this end are identified.

• 한국문헌정보학회지
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• 제43권1호
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• pp.271-292
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• 2009

공공도서관은 공중의 정보이용, 문화활동, 독서활동 및 평생교육을 증진함을 목적으로 하고 있으며, 전국적인 네트워크를 갖추고 지역사회의 고유성을 반영하는 개별 지역문화기관이다. 이에 공공도서관은 지역과 함께 하는 살아있는 유기체로서 해당지역의 특성과 요구를 적극 반영하는 개성 있는 도서관체계를 갖추는 것이 필요하다. 이 연구는 공공도서관의 역할과 기능적 측면에서 지역민의 중요한 지식정보센터로서 다양한 지식정보와 문화프로그램, 지역문화콘텐츠 제공을 위해 각 지역에 산재되어 있는 지역문화콘텐츠의 관리 현황을 살펴보고 공공도서관에서 그 활용 방안을 제시하고자 한다.

• 전자공학회논문지
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• 제51권11호
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• pp.155-164
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• 2014

지역 히스토그램 평활화 방법은 입력 영상의 국부적은 밝기 특성을 부각시키기 위한 가장 널리 사용되는 방법들 중 하나이다. 그러나 지역 히스토그램 평활화 기반의 방법들은 몇 가지의 문제점들을 발생시킨다. 먼저, 국부적인 특성들을 과도하게 부각시켜 의도하지 않는 결함들을 발생시킨다. 두 번째, 국부 특성들의 향상이 전역 콘트라스트 향상을 증대시키지는 않는다는 점이다. 이러한 문제들을 해결하기 위해, 우리는 광원 정보를 이용한 지역 히스토그램 평활화 방법을 제안한다. 먼저, 광원 정보를 추정하기 위하여 제안하는 방법은 입력 영상의 다운 샘플링과 업 샘플링 과정을 통하여 획득된 블러 영상과 원 영상을 융합한다. 그 후, 지역 히스토그램 평활화 방법에서 추정한 변환 함수를 광원 정보를 이용하여 적응적으로 조절한다. 그 결과 기존 방법에서 발생할 수 있는 결함을 억제시키면서, 전역 콘트라스트와 국부 콘트라스트를 동시에 향상시킬 수 있다. 실험 결과들은 제안하는 방법이 기존 방법에 비해 수치적인 면과 시각적인 면에서 뛰어난 결과를 보임을 확인할 수 있다.

• 한국환경과학회지
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• 제16권3호
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• pp.311-321
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• 2007

We have investigated coarse wind sectors in Busan metropolitan area and simulated detailed wind field using local atmospheric circulation model, RAMS in preceding studies (Part I, Part II). In this study, we divided and analyzed local wind sector in Busan according to the preceding results. We found that Busan metropolitan area is divided into 2 or 3 local wind sector in each coarse wind sector. The 9 coarse wind sectors were classified into 20 local wind sectors in total. But three local wind sectors were finally excluded because of these sectors were located on the complex hill area and the sea. Local wind sectors, therefore, in Busan metropolitan area were defined as 17 regimes. We assessed the location of air qualify monitoring sites at Busan metropolitan area using the information of these wind sectors. Most of these were located at proper points, but 6 sites were placed at 3 local wind sectors as a couple and no site was set up at 3 other sectors. Hence the location of these sites was in need of rearrange.

• Journal of the Korean Data and Information Science Society
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• 제21권5호
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• pp.983-997
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• 2010

This study is to explore the relationship between trust in local administrative organization and organizational performance. Local administrative organizations provide the citizens with administrative services. Heightening the organizational performance contributes the citizens' happiness and the stream of times through organizations' change. To provide high quality of administrative service to citizens, trust in organizations is more important than any other capital. The improvement of organizational performance needs through this social capital. Factors about trust variables and organizational performance variables are extracted through the theoretical discussions. To do the research, public servants in 7 local administrative organizations of Gangwondo were asked to do the survey about how trust in organizations affects organizationa performances. The results explain that trust variables are related to organizational performance, and the local administrative organization which is high in trust is high in organizational performance. Trust in local administrative organizations improves the organizational performance internally and the organization will obtain trust from the citizens externally.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권10호
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• pp.4126-4142
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• 2015

Finger vein recognition is a biometric technology using finger veins to authenticate a person, and due to its high degree of uniqueness, liveness, and safety, it is widely used. The traditional Symmetric Local Graph Structure (SLGS) method only considers the relationship between the image pixels as a dominating set, and uses the relevant theories to tap image features. In order to better extract finger vein features, taking into account location information and direction information between the pixels of the image, this paper presents a novel finger vein feature extraction method, Multi-Orientation Weighted Symmetric Local Graph Structure (MOW-SLGS), which assigns weight to each edge according to the positional relationship between the edge and the target pixel. In addition, we use the Extreme Learning Machine (ELM) classifier to train and classify the vein feature extracted by the MOW-SLGS method. Experiments show that the proposed method has better performance than traditional methods.

• 한국컴퓨터정보학회논문지
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• 제16권6호
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• pp.71-77
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• 2011

본 논문에서는 번호판 인식 시스템에서 번호판 영상의 화질 개선을 위하여 국부 블록(Local block : LB) 학습기반의 초해상도 알고리즘을 제안한다. 본 논문에서 국부 블록은 영상 내에서 정보를 담고 있는 최소 단위로 정의하였으며, 학습의 기본 단위가 된다. 제안된 방법은 먼저 다양한 환경에 적합한 훈련 국부 블록 set을 생성하였다. 훈련 국부 블록 set은 고해상도 국부 블록과 저해상도 국부 블록의 순서쌍으로 구성되며 다양한 크기의 번호판과 열화 영상에 대응하기 위하여 다양한 크기와 열화를 갖는 저해상도 국부 블록 훈련 set을 구성하였다. 그 다음으로는 저해상도 입력 영상에서 복원해야할 정보를 훈련 국부 블록 set에서 추출/융합하는 과정을 제안하였다. 모의 실험결과, 열화된 저해상도 번호판 영상에 대해 제안한 방법이 효과적인 복원 성능을 나타내는 것을 확인할 수 있었다.

• 지적과 국토정보
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• 제45권1호
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• pp.17-30
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• 2015

공간정보는 정보의 공유 및 개방, 융 복합 활용 등에 있어서 상위정책과의 연계성을 높일 뿐만 아니라 시민의 능동적 참여와 빅데이터를 연계한 창조적 활용에 기여할 수 있다는 점에서 지방자치단체 공간정보정책의 중요성은 크다. 하지만 수치지형도를 포함한 기본공간정보의 갱신, 공간정보 서비스 발굴, 공간정보 공유 및 협력 등 지방자치단체 공간정보 정책 수립은 미흡한 실정이다. 본 연구에서는 지방자치단체의 공간정보정책 개선방안을 도출하기 위해 중앙정부와 지방자치단체의 공간정보정책 및 시스템을 비교하고 지방자치단체 공간정보정책 시행계획과 서울시 32개 공간정보시스템 활용설문을 분석하였다. 연구결과 지방자치단체의 공간정보정책 개선을 위해 업무 부서와 연계하여 준공도면 등을 이용한 기본도의 수시 갱신, 국가공간정보통합체계를 통한 최신 공공부문 공간정보의 확보, 공간정보 플랫폼을 통한 정보의 공유, 공간정보 기반 정책 참여 관련 성공 사례의 벤치마킹 등이 제시되었다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1748-1759
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• 2018

Weber Local Descriptor (WLD) is a stable and effective feature extraction algorithm, which is based on Weber's Law. It calculates the differential excitation information and direction information, and then integrates them to get the feature information of the image. However, WLD only considers the center pixel and its contrast with its surrounding pixels when calculating the differential excitation information. As a result, the illumination variation is relatively sensitive, and the selection of the neighbor area is rather small. This may make the whole information is divided into small pieces, thus, it is difficult to be recognized. In order to overcome this problem, this paper proposes Weber Symmetrical Local Graph Structure (WSLGS), which constructs the graph structure based on the $5{\times}5$ neighborhood. Then the information obtained is regarded as the differential excitation information. Finally, we demonstrate the effectiveness of our proposed method on the database of ORL, JAFFE and our own built database, high-definition infrared faces. The experimental results show that WSLGS provides higher recognition rate and shorter image processing time compared with traditional algorithms.