• Title/Summary/Keyword: tile map

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Design of a Feature-based Spatial Data Management System for Digital Map (수치지도를 위한 피처 기반 공간자료 관리 시스템 설계)

  • Chi, Jeong-Hee;Kim, Seung-Kwan;Ryu, Keun-Ho;Kim, Myung-Jun
    • Journal of Korea Spatial Information System Society
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    • v.7 no.3 s.15
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    • pp.107-118
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    • 2005
  • Various spatial data are utilized, through geographic information system, for the process to make a decision related to space. Generally, spatial data is large in quantity and it costs high and takes quite a long time for producing and maintaining it. An existing spatial data management system, tile-based one, for digital map manages spatial data being separated by a uniform data unit called tile. These systems can be implemented easily but have many problems such as they can directly store and manage feature included in tile. Therefore, in this paper, we suggest a feature-based spatial data management system for digital map. The proposed system is able to store and manage spatial data in the unit of feature directly. Hence this system is able to immediately update any change in the data and to supply users with the updated data without any delay. The proposed system can not only support a function of data input, management, supplying and update but also support unity origin coordinate conversion, UFID creation, feature unifying, feature dividing and metadata input which is not supported by the existing tile-based system. The proposed system can easily manage spatial data and can increase efficiency in processing and application.

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A Study on the Present State and Property of Foreign Digital Map (국외 수치지도 제작 현황 및 특성 연구)

  • Park, Joung-Hyun;Heo, Min;Lee, Yong-Wook;Bae, Kyoung-Ho
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2009.04a
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    • pp.87-89
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    • 2009
  • A digital map is provided with 2 dimensions of tile based, a user is hard for decision-marking directly. In this study, we analyzed the present situation and characteristics of a digital map about a developed nation such as United States, England, Canada. As a result, American National Map and British Master Map are keeping continuity and up-to-date, included UFID, ISO, OGC referred to an international standard, and a digital map was made.

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Wang Tile Terrain Synthesis and Real-Time Rendering using Parallax Mapping (왕(Wang) 타일 지형 합성과 시차 맵핑을 이용한 실시간 렌더링)

  • Jeong, Jae-Won;Choi, Min-Gyu
    • Journal of Korea Game Society
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    • v.8 no.1
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    • pp.71-77
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    • 2008
  • The geometric structure constructs terrain from height map and non-periodically tiling with Wang tile for the detail description. It will be able to express detail bump using parallax mapping to add decal data together with height data in tile. We solve the problem when the real-time rendering and propose improving of parallax mapping for the terrain.

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Spatial Data Model of Feature-based Digital Map using UFID (UFID를 이용한 객체기반 수치지도 공간 데이터 모델)

  • Kim, Hyeong-Soo;Kim, Sang-Yeob;Lee, Yang-Koo;Seo, Sung-Bo;Park, Ki-Surk;Ryu, Keun-Ho
    • Journal of Korea Spatial Information System Society
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    • v.11 no.1
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    • pp.71-78
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    • 2009
  • A demand on the spatial data management has been rapidly increased with the introduction and diffusion process of ITS, Telematics, and Wireless Sensor Network. And many different users use the digital map that offers various thematic spatial data. Spatial data for digital map can be managed by tile-based and feature-based data. The existing tile-based digital map management systems have difficult problems such as data construction, history management, and update data based on a spatial object. In order to solve these problems, we proposed the data model for feature-based digital map management system for representation of feature-based seamless map, history management, real-time update of spatial data, and analyzed the validity and utility of the proposed model.

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System Design for Producing of Object-oriented Continuous Digital Map (객체형 연속수치지도 제작을 위한 시스템 설계)

  • Heo, Min;Park, Joung-Hyun;Yoon, Jong-Seong;Park, Myong-Jin
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2009.04a
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    • pp.75-78
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    • 2009
  • As a digital map is tile based of 2D, it is difficult to be satisfied with accuracy and up-to-date. In this study, we analyzed requirements of an object-oriented continuous digital map and designed the system. The digital map is 3D continuous object and has the accuracy and up-to-date, and designs with management system, transfer system, change information management system, frequent updating system and, same time updating system.

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A Study on the Heuristics Algorithm for a establishing Vehicle Scheduling Plan under dynamic environments - With the emphasis on the GPS and Digital Map - (동적인 환경하에서의 차량경로계획 수립을 위한 발견적 기법에 관한 연구 - GPS와 전자지도의 활용을 중심으로 -)

  • 박영태;김용우;강승우
    • Proceedings of the Korean DIstribution Association Conference
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    • 2003.05a
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    • pp.55-70
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    • 2003
  • The most transport companies are placing increasing emphasis on powerful new techniques for planning their vehicle operations. They have tried to improve their vehicle control and customer service capability by adopting tile advanced information technology, such as GPS(Global Position System) and Using Digital Map. But researches on the VRSP(vehicle routing St schedule problem) in this situation were very few. The purpose of this research is to develop vehicle scheduling heuristics for making a real-time dynamic VRSP under the situation that GPS and using Digital Map are equipped to the transport company. Modified savings techniques are suggested for the heuristic method and an insertion technique is suggested for the dynamic VRSP. The urgent vehicle schedule is based on the regular vehicle schedule. This study suggest on VRSP system using GPS and Digital Map and the performance of the suggested heuristics is illustrated through an real case example.

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A Study on Terrain Construction of Unmanned Aerial Vehicle Simulator Based on Spatial Information (공간정보 기반의 무인비행체 시뮬레이터 지형 구축에 관한 연구)

  • Park, Sang Hyun;Hong, Gi Ho;Won, Jin Hee;Heo, Yong Seok
    • Journal of Korea Multimedia Society
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    • v.22 no.9
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    • pp.1122-1131
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    • 2019
  • This paper covers research on terrain construction for unmanned aerial vehicle simulators using spatial information that was distributed by public institutions. Aerial photography, DEM, vector maps and 3D model data were used in order to create a realistic terrain simulator. A data converting method was suggested while researching, so it was generated to automatically arrange and build city models (vWorld provided) and classification methods so that realistic images could be generated by 3D objects. For example: rivers, forests, roads, fields and so on, were arranged by aerial photographs, vector map (land cover map) and terrain construction based on the tile map used by DEM. In order to verify the terrain data of unmanned aircraft simulators produced by the proposed method, the location accuracy was verified by mounting onto Unreal Engine and checked location accuracy.

Production of Digital Image Map using Aerial Photo and Geospatial Information System (항공사진과 지형공간정보체계를 이용한 수치영상지도 제작연구)

  • Sohn, Duk-Jae
    • Journal of Korean Society for Geospatial Information Science
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    • v.5 no.2 s.10
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    • pp.207-220
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    • 1997
  • This study aims to develope the production method of digital image map of high capable utiliy and terrain interpretability using aerial photo and Geospatial Information System. Theory and efficient practical method was studied to generate tile digital image map with low-cost personal computer system using the merging procedure of raster scanned aerial photo and vector topographic map. Determination theory of ground coordinates, digital image processing, production of digital elevation model was reviewed. And some chariteristics of digital image map, image collection method and significant concepts of digital image processing was studied. Also input and output way of image data to generate the digital image nap, production method of orthophoto map using aerial photo through digital differential rectification was studied. As the result, digital image map was produced and analyzed through the above mentioned procedures.

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The Identification of Spilled Oil by the Pattern of Alkyl PAH

  • Bae, Il-Sang;Shin, Ho-Sang;Lee, Jae-Young;Jung, Kweon;Lee, Yeon-soo
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2004.04a
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    • pp.289-292
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    • 2004
  • In order to identify the origin and nature of the spilled oil in the potential source, we analyzed the pattern of alkyi PAM(Polynuclear Aromatic Hydrocarbons) in fuel standard and environmental samples. Alkyl PAM patterns are used for fuel-type identification in weathered environmental samples. Detection of alkyl PAH was achieved by operation CC/MS in the SIM mode. We chose ions of naphthalene(m/z 128), C1-naphthalene(m/z 142), C2-naphthalene(m/z 156), C3-naphthalene(m/z 170), C4-naphthalene(m/z 184) for the comparison of this pattern according to the type of fuel. We analyzed tile pattern of alkyl PAH in neat gasoline, kerosene, diesel, and JP-8, and in groundwater samples which were collected in monitoring wells. The distribution map of alkyl-naphthalene shows different patterns among four different fuel types (gasoline, kerosene, diesel, and JP-8). Particularly, tile distribution map of kerosene and JP-8 is found to be of value in identifying fuel type in that the difference is clear. Therefore distribution patterns of alkyl-PAH compounds provide another useful tool for fuel-type identification of petroleum fuels.

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