• Proceedings of the Korean Information Science Society Conference
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• 2001.04b
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• pp.607-609
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• 2001

원격지 분산처리 관리 시스템은 애니메이션의 제작과정에서 발생하는 원격지 분산처리를 효율적으로 관리하는 시스템을 말하는데, 기존의 애니메이션 제작과정에서 원격지 분산처리시 발생하는 여러 문제점등을 효율적으로 개선하고, 개발 속도를 증대시키는데 그 목적이 있다고 하겠다. 본 논문에서는 애니메이션 원격지 분산처리 관리를 하기 위한 방법의 일환으로, Ink and Paint System의 애니메이션 제작 방식에서 공동개발(Simulation collaboration)과 개정(revision)을 제공하는 원격지 처리를 위한 정보시스템을 개발하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.239-239
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• 2021

최근 기후변화로 인해 국지성 집중호우와 태풍의 발생빈도가 증가하고 있다. 특히 우리나라 국토는 전체면적 중 산지면적이 63%에 해당하여 산지에서 발생하는 산사태와 토석류에 취약한 실정이다. 이러한 피해를 사전에 예방·대비하기 위해 국내·외에서는 재해지도를 제작하여 관리하고 있지만 대부분의 재해지도는 격자형식으로 제작되어 있어 실무자들이 활용하기에는 다소 어려움이 있다. 따라서 본 연구에서는 산지재해에 취약한 강원도 강릉시 지방도를 대상으로 산림청에서 개발한 산사태위험지도와 토석류 위험지도를 중첩하여 복합재해지도를 제작하였다. 먼저 산사태위험지도에 유역의 개념을 도로에 적용하고서 지방도로를 200m 간격으로 분할하여 도로 중심으로 유역을 제작하였으며, 해당 유역에 산사태위험면적과 토석류위험면적 값을 이용하여 도로의 등급을 1등급(매우 위험) ~ 5등급(매우 안전)으로 분류하였다. 또한 복합재해지도 결과의 검증을 위해 SINMAP모형을 이용하여 오차율을 비교분석한 결과 15% 이내인 것으로로 나타났다. 본 연구는 복합재해에 대비 할 수 있는 유역의 개념을 적용한 재해지도를 제작하며 도로관리자의 숙련도에 상관없이 재해지도를 쉽게 이해하고 활용 할 수 있을 것으로 판단된다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.17 no.3
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• pp.213-223
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• 1999

This study provides a improved model of digital basemap production that can efficiently identify and correct the various errors generated in digital map production process. In order to fulfill the requirements that the new model calls for, this study provides a typology of errors by analyzing the errors in digital basemap data. Computer programs for automatic error searching and for checking the correctness of the digital codes in the data have also been developed. Exsiting visual error-checking process has also been analyzed and more systematic process is suggested. As a result, it is found that the improved model of digital basemap production suggested in this study contributes to improving the quality of the digital map database by providing a systematic method for efficient error-searching and correction of digital map data.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.13 no.1
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• pp.77-83
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• 1995

This paper is concentrated on map generalization in digital environment for automated multi-scale map pro-duction using conventional hardcopy maps. Line generalization is urgently required process to prepare small scale digital map database when large scale map databases are available. This paper outlines a new approach to the line generalization when preparing small scale map on the basis of existing large scale distal map. Line generalizations are conducted based on zero-crossing algorithm using six sheets of 115,000 scale YEOSU area which produced by National Geographic Institute. The results are compared to Douglas-Peucker algorithm and manual method. The study gives full details of the data reduction rates and alternatives based on the proposed algorithm.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.17 no.4
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• pp.359-372
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• 1999

Recently, the digital map of national basemap has been made through NGIS(National Geographic Information System) project in Korea. The digital map should have to be corrected or updated to cope with the changes in topography in future. For that, the efficient method correspond with digital map should be presented. Digital photogrammetric system has been considered as an efficient method for digital mapping because it provides the results in digital form, but the system if not fully tested because the commercial system is in early stage. This study aims to present the way to correct or update digital map using the digital photogrammetric system. Digital mapping in the environment of digitalphotogrammetric system was executed and the results were analyzed and compared with those from analytical plotter.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.21 no.3
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• pp.215-228
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• 2003

National Geography Institute(NGI, National mapping agency) has been producing national basemap in automated process since middle of 1980's toward the systematic and efficient management of national land. In 1995, Korean government initiated a full-scale implementation of the National Geographic Information System(NGIS) Development Plan. Under the NGIS Development Plan, NGI began to produce digital maps in the scales of 1:1,000, 1:5,000, 1:25,000. However, digital maps of 1:250,000 scale, which are currently used for national land planning, were not included in NCIS Development Plan. Also, the existing laws and specifications related to digital maps of 1:250,000 scale are not clearly defined. It is fully appreciated that data dictionary will be a key element for users and generators of digital maps to rectify the existing problems in digital maps as well as to maximize the application of digital maps. There(ore this study proposed a feature classification system, which defines features that should be represented in digital map of 1:250,000 scale, and data dictionary as well.

• Journal of Korean Society for Geospatial Information Science
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• v.6 no.1 s.11
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• pp.117-128
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• 1998

National digital maps (NDM) produced by diverse production methods through various stages are ready to distribute to public. The position accuracy problems in NDM should be inspected and evaluated to guarantee the quality of NDM. The purpose of this study is 1) to find out factors of impeding accuracy by examining the position accuracy of NDM on scales of 1:1,000 and 1:5,000, 2) to form the technical basis of making accurate digital maps and 3) to increase reliability and practical use of NDM. In this study, we found out 1) obstacles of making accurate mM especially in solving horizontal and vertical location accuracy problems and 2) error sources in production methods as well as stages. These results can be contributed to increase accuracy on modifying and upgrading NDM.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2004.11a
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• pp.335-341
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• 2004

소축척지도제작을 위한 자동화 처리 과정에서는 기하학적 및 논리적 오류가 발생하고, 기하학적 오류는 많은 부분에서 자동화 처리가 가능하나 논리적 오류는 여러 가지 경우에 대하여 자동 판단이 곤란한 경우가 많기 때문에 대부분 수작업으로 이루어지고 있는 실정이다. 따라서, 본 연구는 수치지도를 이용한 일반화 처리 후의 지형도 제작시에서 나타나는 여러 가지 문제 중 도로과장화로 인한 오류문제를 해결하기 위하여 도로와 건물 폴리곤간의 겹침위치를 자동 탐색하고, 이를 자동처리하기 위한 프로그램을 유전자 알고리즘을 이용하여 개발하였다. 그 결과 지도제작 과정에서 발생하는 오류를 해결할 수 있었고, 지도제작 자동화율을 향상시킬 수 있었다.

• Journal of Korean Society for Geospatial Information Science
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• v.18 no.1
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• pp.135-143
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• 2010

The national base map has its value sand roles as the basic spatial information of the nation. The current national base map that is a 1/5,000 digital map, however, has failed to perform its roles as basic spatial information due to the limitations with its quality and accuracy and requires measures to complement them. Thus this study set out to suggest ways to advance the current 1/5,000 national base map, selected topography and natural features of a digital map that could be made with GSD 0.25m digital aerial photographs, and set up the optimal ways to make a digital map by conducting an experiment of making an optimal digital map with such photographs. It also analyzed the map made with GSD 0.25m digital aerial photographs for accuracy and usability. In order to establish a set of criteria of making a digital map with GSD 0.25m digital aerial photographs, the investigator carried out analyses and picked topography and natural features items, which include 9 large categories, 31 medium categories, and 509 small categories. Then an experiment of making a digital map was conducted according to the digital map making method. As a result, solid drawing was selected as the optimal way to making a digital map, and the optimal process was established. Using the research achievements, a model digital map was made with GSD 0.25mm digital aerial photographs. The map recorded about two times horizontal and vertical location accuracy than the old 1/5,000 digital map and was capable of detailed descriptions of topography and natural features. A new national base map made with GSD 0.25m digital aerial photographs will provide reliable spatial data, thus increasing the level of satisfaction among people and the level of advancement of national base maps.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2003.04a
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• pp.393-396
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• 2003

본 연구에서는 범용 CAD 시스템에서 정사영상을 이용한 지도제작 가능성 판단을 목적으로 하고 있다. 이를 위해 대전시 일부 지역에 대한 항공사진을 영상화 및 정사 보정하여 범용 시스템에서 판독 가능한 지형 요소를 분석하고 추출하였다. 국립지리원 발행 1/5,000 기준 수치 지도와 비교하여 정성적 및 정량적으로 분석하고 표현상의 문제점을 도출하였으며, 범용 시스템에서 정사영상을 이용한 지도 제작 가능성을 검토하였다.