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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society for Geospatial Information System
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Journal DOI :
The Korean Society for Geospatial Information System
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Volume & Issues
Volume 13, Issue 4 - Dec 2005
Volume 13, Issue 3 - Sep 2005
Volume 13, Issue 2 - Jun 2005
Volume 13, Issue 1 - Mar 2005
Selecting the target year
A Study on Applying SDSS to Landcover Change Detection for Enhanced Performance
Kim, Sun-Soo ; Heo, Yong ; Yu, Ki-Yun ; Kim, Yong-Il ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 3~12
Change detections are widely used for its usefulness. During the process two factors are important; one is which method is to be adopted and the other is what should be the appropriate critical value. Until far, these factors are mostly decided by users based upon their knowledge from past experiences. In this paper we propose a set of methodologies that allow users maintaining optimal decisions on which change detection method is the desirable one, what might be the suitable critical value, and what does the introducing SDSSs(Spatial Decision Support Systems) to change detections means.
Analysis on the Topographic Change in the West Coast Using Landsat Image
Kang, Joon-Mook ; Kang, Young-Mi ; Lee, Ju-Dae ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 13~20
Upon the request of balanced development of the country and making inroads into the continent of China the development of the west coast was begun in the late 1980s, which has been being continued till recently under the blueprint of making the western part of the capital region to be the hub of northeastern Asia. As more lively development is expected to continue in the area, there are many occurrences of change in topology and terrain in the west coast. This study was done to detect the topographic and terrain change of the vicinity of the west coast. To make the basic map of the change in topology and terrain, the mosaic images were made using landsat images. The accuracy of the images was examined by comparing them with GCP through 1:25,000's digital map. After that, among the resultant images of the 1970s and 2000s, those of Sihwa, Hwaong and Ansan, the lands reclaimed by drainage were compared to observe the change in the area. From the results, it was concluded that, in case of the land the topological change was not so big due to the development in the reclaimed land or the bare land, and the area of agriculture and downtown increased, the drainage and bare land area decreased by comparing the change of land use.
Development of Road Management System Introducing Concept of Location Based Service
Lee, Hyun-Jik ; Koo, Dae-Sung ; Ru, Ji-Ho ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 21~28
Local government has constructed GIS DB for efficient business achievement and effective management of complex city facilities and has been developing and utilizing application systems, such as Underground Facility Management System Road Management System and so on. However, Facility Management System is providing functions for business, but not for GIS DB's maintenance. City facilities GIS DB managed by GIS technical expert collects basic figure and attribute information through survey and field investigation and is constructed via complex process, such as structurize editing etc. So it has been concerned that the update and confidence of CIS DB can be lower if a business man who does not have enough experiences about Facility Management System operates it by himself. Therefore, functions that enable business users to operate Facility Management System easily should be provided.
Development of Submerged Land Compensation Management Geographic Information System
Sim, Jeung-Min ; Lee, Chang-Kyung ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 29~37
The compensation data for submerged land have been filed in the form of document or managed with spread sheet like Excell up to now. In the case of dam or highway construction, huge compensation data for the submerged or included land have been managed inefficiently by the administrative manpower. Moreover, where and how to keep the enormous data becomes big problems. In response to the requirements, an submerged land compensation management system based on the location and property information of parcels was developed. The compensation management system has many functions including site searching for compensation, compensation money computing, and compensation data managing. It is expected that the submerged land compensation management system creates various information effects.
Determination of Physical Camera Parameters from DLT Parameters
Jeong, Soo ; Lee, Chang-No ; Oh, Jae-Hong ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 39~43
In this study, we analyzed the accuracy of the conversion from DLT parameters to physical camera parameters and optimized the use of DLT model for non-metric cameras in photogrammetric tasks. Using the simulated data, we computed two sets of physical camera parameters from DLT parameters and Bundle adjustment for various cases. Comparing two results based on the RMSE values of check points, we optimized the arrangement of GCPs for DLT.
Risk Evaluation of a Road Slope on Hazard Using 3D Scanner
Kwak, Young-Joo ; Jang, Yong-Gu ; Kang, In-Joon ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 45~50
Recently, slope failures are disastrous when they occur in mountainous area adjoining highways. The accidents associated with Slope failures have increased due to rapid urbanization of mountainous area. Therefore, the inspection of slope is conducted to maintain road safety as well as road function. In this study, we apply to the remedy which is comparing existent description to advanced technology using GIS. we utilize a 3D scanner, one of the advanced method, to generate precise and complete road slope model from expert point of view. In result, we are transferred practical data from external slope stability to hazard slope information. We suggest not only the database but also the method of road risk evaluation based on GIS.
Improving Internet GIS Services Using the GML
Chang, Min-Chol ; Jun, Chul-Min ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 51~63
With the emerging mobile technologies, applications based on GIS are also getting more attention recently. But it is known to have some limitations in being served in different types of mobile devices and platforms. While information services are limited by data format and data exchange between platforms, the eXtensible Markup Language(XML) is getting focused as the most promising technology as the solution to such problems. Geographic Markup Language(GML) is based on XML technology and is being frequently mentioned recently as the solution to service problem on different mobile devices as well as the internet. In this study, we suggested the framework to use the GML in order to transfer and represent geographical data through the on-line or wireless platforms. We compared different application types which are currently used with GML and proposed to improve GIS services using the GML in geographical data transfer and description.
Automatic Extraction of Building Height Using Aerial Imagery and 2D Digital Map
Jin, Kyeong-Hyeok ; Hong, Jae-Min ; Yoo, Hwan-Hee ; Yeu, Bock-Mo ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 65~69
Efficient 3D generation of cultural features, such as buildings in urban area is becoming increasingly important for a number of GIS applications. For reconstruction or 3D building in urban area aerial images, satellite images, LIDAR data have been used mainly. In case of automatically extracting and reconstructing of building height using single aerial images or single satellite images, there are a lot of problems, such as mismatching that result from a geometric distortion of optical images. Therefore, researches or integrating optical images and existing 2D GIS data(e.g. digital map) has been in progress. In this paper, we focused on extracting of building height by means or interest points and vortical line locus for reducing matching points. Also we used digital plotter in order to validate for the results in this study using aerial images(1/5,000) and existing digital map(1/1,000).
Improving Digital Map Production Using a Field Survey System -Focusing on Geographic Survey and Structural Editing Processes
Jeon, Bu-Nam ; Choi, Yun-Soo ; Lee, Im-Pyeong ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 71~77
Digital maps that art the primitive components for GIS has been increasingly used for various applications. Although their production processes has been noticeably improved, particularly, the geographic survey and structural editing processes still depends on the traditional process depending on maps printed on papers. This study thus proposes a new efficient method employing a computerized filed survey system into these processes. We applied this method to producing a digital map ver 2.0 and compare the results nth those based on the existing method. From this comparison analysis, it is shown that the proposed method saves about 5% from the overall cost by reducing the man power and processing steps required for digital map production.
A Study for The Accuracy Assessment Method of Satellite Sensor Modeling
Ko, Hyun-Soo ; Choi, Chul-Soon ; Hong, Jae-Min ; Yoon, Chang-Rak ;
Journal of Korean Society for Geospatial Information System, volume 13, issue 2, 2005, Pages 79~84
Recent researches about the accuracy assessment of the satellite sensor modeling usually focused on the quantitative analysis of errors. Quantitative error analysis contains its limitation that the distribution property of error can not be analyzed. The numerical evaluation of result of the satellite sensor modeling drop its confidence because of the absence of the distribution property of error. This study can be presented the distribution property of error to calculate RMSE and direction-coefficient of error. Moreover, Direction-coefficient which is closed to 1 s contains systematic errors. On the contrary, direction-coefficient which is closed to the zero contains random errors. To analyse the direction of errors, we will indicate that a formula is reduced the error.