• Journal of Korean Society for Geospatial Information Science
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• v.22 no.3
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• pp.137-143
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• 2014

Recently, as new paradigm for government operation called government 3.0, government is actively operating policy opening and sharing public data. In addition, the Ministry of Land are operating an open platform integrated map service (the VWorld) which provides a variety of video contents such as the country's national spatial information, traffic information and three-dimensional building for the public. According to W3C Foundation's Open Data Status Report(2013), our country has the evaluated results that the part of the government's policy support and planning is good while the part of the data management is vulnerable. So our country needs the quality improvement for the data management. In addition, a digital aerial photograph image data is required to be up-to-date for the three-dimensional spatial object data. In this paper, we present the method for enhancement of the accuracy of vertical position and for maintainment of up-to-date vertical position. Our methods evaluate the data quality and analyze the cause of error of measurement utilizing the national standard quality assessment method. The result of research shows that the accuracy of vertical position is improved if the height of the building captain is adjusted by the quality assessment values and a three-dimensional model has up-to-date data if reconstruction and extension information of construction register is utilized.

• Journal of Korean Society for Geospatial Information Science
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• v.18 no.4
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• pp.141-149
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• 2010

Three-dimensional geo-spatial information is important for the efficient use and management of the country and the three-dimensional expression and analysis of urban projects, such as urban plans devised by local governments and urban management. Thanks to the revitalization of the geo-spatial information service industry, it is now being variously used not only in public but also private areas. For the creation of high-guiltily three-dimensional geo-spatial information, emphasis should be placed on not only the quality of the source image and three-dimensional geo-spatial model but also the level of visualization, such as level of detail and texturing. However, in the case of existing three-dimensional geo-spatial information, its establishment process is complicated and its data are not updated frequently enough, as it uses ready-created digital maps. In addition, as it uses Ortho Images, the images exist Relief displacement. As a result, the visibility is low and the three-dimensional models of artificial features are simplified to reach LoD between 2 and 3, making the images look less realistic. Therefore, this paper, analyzed the quality of three-dimensional geo-spatial information created using the three-dimensional modeling technique were applied using Digital photogrammetry technique, using digital aerial photo images by an existing large-format digital camera and multi-looking camera. The analysis of the accuracy of visualization information of three-dimensional models showed that the source image alone, without other visualization information, secured the accuracy of 84% or more and that the establishment of three-dimensional spatial information carried out simultaneously with filming made it easier to gain the latest data. The analysis of the location accuracy of true Ortho images used in the work process showed that the location accuracy was better than the allowable horizontal position accuracy of 1:1,000 digital maps.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.505-505
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• 2015

수위자료는 유량을 판단하기 위한 기초적인 수문자료이다. 하지만 관측자료는 항상 오류 가능성이 있으므로 이에 대해 지속적인 품질관리가 요구된다. 일반적으로 수위자료는 단일 지점에서 시간에 따라 수집되므로 시간에 따른 변화 등을 이용하여 수위자료의 오류 여부를 판단한다. 하지만 실제 수위자료는 상류와 하류가 공간적으로 연결되어 있으므로 상 하류의 관계를 비교함으로써 수위자료의 오류 여부를 판단하는 것도 가능할 것이다. 이에 본 논문에서는 하천의 수위자료를 해발수위 자료로 변환하여 하구로부터의 거리를 이용해 도시함으로써 수위 프로파일을 시각화하고 그 변화를 고찰함으로써 수위자료의 시공간적인 변화를 이용해 수위 오류를 찾을 수 있는 시각화 기법을 개발하였다. 그림 1에서 보는 것과 같이 각 관측소 수위의 정상 경사와 역 경사를 시간별로 구분하고 이를 연속적으로 추적함으로써 수위자료의 오류와 수위관측소 제원 정보의 오류 등을 찾는데 도움을 줄 수 있으며, 수위자료에 대한 향상된 품질관리를 가능하게 할 것이다.

• Journal of Korean Society for Geospatial Information Science
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• v.24 no.3
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• pp.75-83
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• 2016

There are various types of disasters now, and accordingly it is practically difficult to manage all types of disasters effectively. If we are able to reconstruct the disaster event and investigate the cause, it may be possible to prepare the recurrence of similar patterns of disasters. The vehicle-based system equipped with state-of-the-art sensors has been proposed in order to reconstruct the disaster site as much as possible and help the disaster investigator to analyze the cause of the disaster by providing high-quality information. However, the data quality obtained from the sensors can be lowered due to unpredictable circumstances of disaster site. In this aspect it is essential to provide practical procedures that assess and analyze the performance of the equipment on site. In this paper, we selected critical elements of performance that can evaluate the vehicle-based image acquisition system, since it is the most critical piece of information in the disaster sites. The quality of the images obtained from vehicle-based image system was analyzed and verified on the test site. From the results of spatial resolution based on GRD(Ground Resolved Distance), we were able to identify maximum 5mm of spatial resolution at a distance of 70m distance. The result of field test is expected to be used for data acquisition plan in future disaster situations.

• Product Safety
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• s.24
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• pp.20-25
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• 1994

공업진흥청은 무더위가 시작되면서 수요가 점차 늘고 있는 전기냉방기의 품질수준을 알아보기 위하여 국내외제품에 대한 품질비교평가를 실시하고 그 결과를 발표하였다. 전기냉방기는 '89년 이전까지만 해도 창문형룸에어컨이 주종을 이루었으나 요즈음은 가정의 주생활 공간이 안방에서 거실로 옮겨짐에 따라 값이 비싸더라도 소음이 적고 맵시가 뛰어난 거실용팩케이지형 전기냉방기를 많이 찾고 있는 실정이다. 이번에 비교평가한 제품은 팩케이지형중 일반가정에서 가장 선호하는 1

• Journal of Digital Convergence
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• v.13 no.2
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• pp.185-192
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• 2015

This study was conducted to identify how cadastral information quality is managed at which level by reviewing the current cadastral information creation and quality management methods. In addition, relevant issues were deducted and, based on the results, plans for cadastral information quality improvement were suggested. The study results are as follows. As a result of reviewing the cadastral information quality management and its level and deducting the relevant issues, it was found that current cadastral information quality management is confined to positional accuracy, instead of comprehensive quality management embracing graphic and attribute information. In addition, it appeared that the quality measurement elements for spatial information quality management recommended by the International Standard Organization (ISO 19113) are not reflected enough. In this study, a plan of quality management at an international level, plan for introducing a quality test process, and plan for organizing an independent quality test organization were suggested as improvement plans for this corresponding issues.

• 주택과사람들
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• s.189
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• pp.12-13
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• 2006

"아파트라고 똑같이 살란 법 없잖아요? 주택처럼 맞춤설계 하세요."(탤런트 이나영. 벽산 건설 블루밍). 아파트 단지 내 골프 연습장에서 골프채를 휘두르는입주민(영화배우 이영애. GS건설 자이). 아파트가 한층 가파르게 진화하고 있다. 밋밋하고 획일화된 주거공간의 대명사였던 아파트가 달라진 소비자들의 눈높이에 맞춰 '환골탈태'를 거듭하고 있는 것이다. 최근 등장하는 아파트 TV 광고를 눈여겨보면 주택 시장의 트렌드가 어떻게 바뀌고 있는지 한눈에 엿볼 수 있다. 건설업체들의 품질 경쟁도 어느 때보다 치열하다. 그렇다면 아파트 품질은 과연 어떻게 변모하고 있을까. 최근까지 주택 시장의 주요 트렌드는 친환경 공간이 중시된 '웰빙 아파트'나 첨단 편의시설을 갖춘 '유비쿼터스 아파트'가 주도했다고 볼 수 있다. 이어 올해 주택 시장의 키워드로 손꼽히는 3대 트렌드는 '커뮤니티 아파트' '기둥식 평면 구조' '발코니 확장형 아파트'로 요약할 수 있다.

• Journal of Korean Association for Spatial Structures
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• v.7 no.4
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• pp.79-87
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• 2007

The object of this study is to understand of the effectiveness characteristic in the field work which is controlled by the quality in the high-rise residential-commercial complex building. From the previous study, the quality improvement factors are investigated. Through the structured questionnaire, the opinions of the field engineers(University, Design firms, Construction company) are gathered in the improvement factors of construction phase. Comparing the results of questionnaire with the conception of field engineers, this study helps in revising and improving the quality control system including tangible factors and intangible factors in the frame work of the high-rise residential-commercial complex building project.

• Journal of Korean Association for Spatial Structures
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• v.19 no.4
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• pp.4-7
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• 2019

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2002.11a
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• pp.17-22
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• 2002