• Journal of Korean Society of Archives and Records Management
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• v.2 no.1
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• pp.119-131
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• 2002

The study designs and implements a KORMARC/EAD integrated system for the Myongji Digital Library Collections. The purpose of this paper is to design the metadata to Myongji Korean History Collections to provide digital information of high quality to clients, and to develop and implement a model for managing digital library collections. In order to test the model and the quality of the derived metadata, we built a metadata management system, which is connected to the existing KORMARC system. The system consists of two modules- a retrieval and an input module. While in the retrieve mode, one can retrieve KORMARC records of books and archival items, with links to modified EAD files for archival items or to image files for books, in the input mode, one can type two types of data such as a catalog data and an inventory data. Finally, we evaluated the proposed system via mail questionnaires, and propose three suggestions to make this system a much more comprehensive and effective system.

• Journal of the Optical Society of Korea
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• v.14 no.3
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• pp.204-208
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• 2010

A scanning imaging spectrograph system was used in this study to retrieve readings of the 2-D distribution of $SO_2$ and BrO around the crater of the Sakurajima volcano in Japan. The measurement was carried out during the daytime on November 2, 2005. Measurements were made at the surface of the site, located 5 km from the Sakurajima crater. One hundred horizontal scans were performed. Each column scanned by the system consists of 64 vertical pixels in order to retrieve the spatial distributions of BrO and $SO_2$ in the plume in terms of slant column densities (SCDs). Measured spectra were analyzed to identify and quantify $SO_2$ and BrO in the volcanic plume utilizing the plume's specific absorption features in the ultra violet region. Two-dimensional BrO and $SO_2$ distributions in SCD were retrieved horizontally covering the upwind, crater and downwind areas, and vertically, including the plume in the center of the scanned image. Both horizontal and vertical dispersions of $SO_2$ SCD from the crater were successfully measured to be from $10^{17}$ to $4.5{\times}10^{18}$ molecules $cm^{-2}$. However, BrO was measured below $10^{15}$ molecules $cm^{-2}$, which is considered its background level.

• 한국정보디스플레이학회:학술대회논문집
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• 2002.08a
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• pp.1005-1008
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• 2002

The authors introduce 3D display systems developed in our laboratories for recent ten years. Those are mainly realized by several technologies in holography: electro-holography. holographic stereogram, holographic optical elements (HOE) and hologram screen. We are currently focusing the development of 3D projection screen without glasses. Powerful directionality of the light beam is required for 3D projection screen unlike 2D type. We succeeded in achieving the superior diffractive efficiency of hologram screen that is based on the advanced volume holography. This technology is extensively useful to retrieve the Bragg condition of volume hologram in the three-dimensional space. Owing to this technology we could establish the principle of multi-view projection screen and have confirmed the case of 4 viewing points.

• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.310-313
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• 2007

In this study, a new technique for atmospheric transmittance estimated from ALOS PRISM data is developed. It is based on satellite's observing radiances of different view angles and assumes that the cause of difference in radiances is the different view angles. The ALOS PRISM has three independent optical systems for viewing forward and backward and producing a stereoscopic image along the satellite's track. This stereo pair data can be used to estimate the transmittance according to the radiative transfer theory. This derived transmittance will be validated by the AERONET data and compared with the MODTRAN4 simulation results. Results show that the higher the land cover albedo, the better the derived transmittance compared to the AERONET data. Besides, this technique also shows the transmittance retrieval will be underestimated for the low land cover albedo.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.274-276
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• 1998

많은 분야에서 정보를 효과적으로 전달하기 위한 수단으로 멀티미디어가 많이 사용되고 있다. 이에 멀티미디어 문서를 효율적으로 저장, 검색, 표현하기 위한 기법에 대한 연구가 필요하다. 멀티미디어 문서 내에 사용되는 audio, video, image, text와 같은 여러 미디어들은 문서 내에서 시.공간적 관계뿐 아니라 내용상의 연관성을 갖게 된다. 본 논문에서는 멀티미디어 문서에 사용되는 미디어들의 특징 및 연관성을 추출해 내고, 각 미디어들을 효율적으로 관리하기 위하여 미디어 특성에 맞는 세크멘테이션 기법을 이용하고 이들에 대한 내용상의 연관성을 고려하여 저장(store), 검색(retrieve), 표현(present)하기위한 시스템을 설계 하였다.

• Journal of the Korean Institute of Rural Architecture
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• v.10 no.2
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• pp.9-16
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• 2008

GongJu is a historical city. There has been scattered Baekje, Chosun and modern cultural heritages in GongJu. Cultural heritages in Baekje is simply preserved in their current condition. Chosun and modern cultural heritages have left their traces only, so that faded from the memory of the world. We must not lose the historical interconnectedness that is created by these heritages. This study is to analyze the architectural culture contents and its practical use program in urban side, and search for the strategy. The purpose of this study is as follows: The first is to retrieve the scattered heritages according to the age and area(as a spot). The second is to improve the street landscape through the linear linkage connecting from spot to spot.(as a line) The last is to create the image of historical city through the regional development.(as an area)

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.11a
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• pp.331-337
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• 2005

현재 인터넷과 멀티미디어 데이터배이스 상에서 부딪치는 검색 문제의 해결 방안으로서 명시적 배경지식의 사용을 지향하는 시맨틱 웹과 새로운 표준 기술 등은 이미지 데이터에 대한 배경 지식을 규정하는 구문론 등을 지원한다. 따라서 본 연구에서는 이미지의 주제(양)에 대한 배경지식을 표현한 도메인 온톨로지를 이용하여 사용자에게 검색어의 정확한 선택이 이루어지도록 제공하고 이미지의 내용과 기술 특정에 대한 시맨틱 주석을 이용하여 검색 용어의 일반화와 다의어, 이미지 대상물의 행위와 같은 고수준의 메타데이터 스키마를 제공함으로써 이미지의 검색에 있어 내용에 기반한 시맨틱 주석과 도메인 온톨로지의 구현과 검색 방법을 제안하고자 한다.

• Proceedings of the KSRS Conference
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• 2002.10a
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• pp.117-122
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• 2002

In this paper, we propose Media GIS web service architecture using 3D geographical database and GPS-related data resulted from 4S-Van. We introduce a novel interoperable geographical data service concept; so-called, Virtual World Mapping (VWM) that can map 3D graphic world with real-world video. Our proposed method can easily retrieve geographical in-formation and attributes to reconstruct 3D virtual space according to certain frame in video sequences. Our proposed system architecture also has an advantage that can provide geographical information service with video stream without any image processing procedures. In addition to, describing the details of our components, we present a Media GIS web service system by using GeoVideo Server, which performs VWM technique.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.396-398
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• 2003

Recently as users' requests for geographic information systems are being more various, several new functions are being added to existing geographic information systems. One of them is linkage of spatial geographic data and video / image data to offer more realistic information of geographic objects to users. Geographic information systems implementing this function are called video geographic information system. In this paper, we design and implement a video geographic information system for providing map data, video data and link information of them to web applications. We 1) design system architecture of a video geographic information system, 2) analyze some processes to construct link information of map data and video data, 3) design database schema to store map data, video data, and link information, and 4) design some XML/GML schema used to query and retrieve these data for web applications.

• Korean Journal of Remote Sensing
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• v.19 no.1
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• pp.71-80
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• 2003

In this Paper, we Propose web-based Media GIS architecture using 3D geographical database and GPS-related data resulted from 45-Van. We introduce a novel interoperable geographical data service concept; so-called, Virtual World Mapping (VWM) that can map 3D graphic world with real-world video. Our proposed method can easily retrieve geographical information and attributes to reconstruct 3D virtual space according to certain frame in video sequences. Our proposed system architecture also has an advantage that can provide geographical information service with video stream without any image processing procedures. In addition to, describing the details of our components, we present a Media GIS web service system by using GeoVideoServer, which performs VWM technique.