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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 12, Issue 4 - Dec 2004
Volume 12, Issue 3 - Sep 2004
Volume 12, Issue 2 - Jun 2004
Volume 12, Issue 1 - Mar 2004
Selecting the target year
The Trouble Analysis of Electric wave Antenna Using GIS
Kang, Joon-Mook ; Kang, Young-Mi ; Choi, Joon-Seuk ; Lee, Ju-Dae ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 3~9
The Broadcasting system is very important part of human lift that preceding to people news, nation plan, sport, drama, leisure and politics. The product of maded by brocasting system conveyed the whole country by radio signal. A brocasting station operate the brocast product radio trial network in the mountain. Recently a height of new building, concrete structure is very large and higher then old one. Since one does or says, noise occur to radio and TV signal whole nation. In this study, Taejun Sikjang mountain and Cheunan-Heuksung mountain where occurred radio noise chosen as a sample, and analysis 3D simulation and plane check. Accordingly come to conclusion condition of noise occurred radio antenna.
A Study On The Three Dimensional Road Simulation Technique Based on GSIS
Quan, He-Chun ; Lee, Byung-Gul ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 11~15
Based on Geo-Spatial Information System(GSIS), we tried to develop three dimensional road simulation system of coastal region considering landscape in Jeju island. The 1:5000 digital map, microstation CAD and Inroads road design programs were used to design coastal road. To estimate landscape effect of the three dimensional road visual simulation we implemented three types road simulations that are the trees planted, the flowers planted and the trees and flowers planted road, respectively. From the study, we found that the three dimensional virtual technique was very useful tool to design the road considering landscape effect in ocean view terrain and to estimate the reasonable road characteristics.
A Study on the Prediction of Groundwater Contamination using GIS
Jo, Si-Beom ; Shon, Ho-Woong ; Lee, Kang-Won ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 17~28
This study has tried to develop the modified DRASTIC Model by supplying the parameters, such as structural lineament density and land-use, into conventional DRASTIC model, and to predict the potential of groundwater contamination using GIS in Hwanam 2 District, Gyeonggi Province, Korea. Since the aquifers in Korea is generally through the joints of rock-mass in hydrogeological environment, lineament density affects to the behavior of groundwater and contaminated plumes directly, and land-use reflect the effect of point or non-point source of contamination indirectly. For the statistical analysis, lattice-layers of each parameter were generated, and then level of confidence was assessed by analyzing each correlation coefficient. Groundwater contamination potential map was achieved as a final result by comparing modified DRASTIC potential and the amount of pollutant load logically. The result suggest the predictability of contamination potential in a specified area in the respects of hydrogeological aspect and water quality.
The Verification of Precision of Single RTK-GPS using CORS
Park, Un-Yong ; Lee, Dong-Rak ; Lee, In-Su ; Bae, Kyoung-Ho ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 29~35
The plenty of availability and high precision of GPS CORS is the reason why it become important more and more in the fields of surveying widely. In this study, I extracted the arbitrary point's coordinate which is using GPS CORS data, now served in RINEX FORMAT via Inter-Net, with observation network of the existing triangulation and GPS CORS data. Then, with this arbitrary point as reference station RTK GPS was performed. And I will study VRS-GPS concept which reduces the time and cost in the fields of surveying.
3D Modeling Method for Cultural Properties Web GIS Database Construction
Jung, Sung-Hyuk ; Lee, Jae-Kee ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 37~42
The purpose of this study is not only preserving and restoring our nation's precious cultural inheritances transmitted for half millennia but informing the world of them. This study also aims recognizing the necessity of transmitting them to prosperity, constructing three-dimensional database by using a photogrammetry and VRML method and utilizing basic data of treasure exhibition with the progress of exhibition technique development on cyber space. Therefore, in this study, I suggest three dimensional modeling method that acquire three dimensional database about cultural properties through photogrammetry method which can acquire three-dimensional coordinates with easy and can express various color and stuff-feeling by using VRML.
Detecting Land Cover Change in an Urban Area by Image Differencing and Image Ratioing Techniques
Lee, Jin-Duk ; Jo, Chang-Hwan ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 43~52
This study presents the application of aerial photographs and the Korea Multi-Purpose Satellite, KOMPSAT-1 Electro-Optical Camera(EOC) imagery in detecting change in an urban area that has been rapidly growing. For the study, we used multi-temporal images which were acquired by two different sensors. Image registration and resampling were rallied out before performing change detection in a common reference system with the same spatial resolution. for all of the images. Results from image differencing and image ratioing techniques show that panchromatic aerial photographs and KOMPSAT-1 EOC images collected by different sensors have potential to detect changes of urban features such as building, road and other man-made structure. And the optimal threshold values were suggested in applying image differencing and image ratioing techniques for change detection.
Development of Feature-based Classification Software for High Resolution Satellite Imagery
Jeong, Soo ; Lee, Chang-No ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 53~59
In this paper, we investigated a method for feature-based classification to develop a software which is suitable for the classification of high resolution satellite imagery. We developed algorithms for image segmentation and fuzzy-based classification required for feature-based classification and designed user interfaces to support interaction with user, considering various elements required for the feature-based classification. Evaluation of the software was accomplished using real image. Classification results were compared and analysed with eCognition software which is unique commercial software for feature-based classification. The classification results from both softwares showed essentially same results and the developed software showed better result in the processing speed.
Image Mosaic using Multiresolution Wavelet Analysis
Yang, In-Tae ; Oh, Myung-Jin ; Lee, In-Yeub ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 61~66
By the advent of the high-resolution Satellite imagery, there are increasing needs in image mosaicking technology which can be applied to various application fields such as GIS(Geographic Information system). To mosaic images, various methods such as image matching and histogram modification are needed. In this study, automated image mosaicking is performed using image matching method based on the multi-resolution wavelet analysis(MWA). Specifically, both area based and feature based matching method are embedded in the multi-resolution wavelet analysis to construct seam line.; seam points are extracted then polygon clipping method are applied to define overlapped area of two adjoining images. Before mosaicking, radiometric correction is proceeded by using histogram matching method. As a result, mosaicking area is automatically extracted by using polygon clipping method. Also, seamless image is acquired using multi-resolution wavelet analysis.
A Study for the DEM Generation from the SPOT Imagery Using Alternative Sensor Model Based on DLT
Yang, In-Tae ; Lee, In-Yeub ; Oh, Myung-Jin ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 67~71
Increasing number and acquisition rate of satellite imagery promoted researches related with DEM generation based on satellite imagery. SPOT image gave us advantage to generate DEM which covers wide area of
. In the case of rigorous sensor model of SPOT imagery, ephemeris data and several ground control points are need and requires arduous computational costs to produce DEM. In this study, using alternative sensor model based on Direct Linear Transform, we generated DEM using small number of ground control points. As a result, it was possible to acquire the DEM with suitable accuracy.
Applying the Space Syntax Technique to the Network of Public Transportation
Jun, Chul-Min ;
Journal of Korean Society for Geospatial Information System, volume 12, issue 2, 2004, Pages 73~77
Due to the traffic congestion of the city and public transportation-oriented policies in large cities, public transportation is receiving attention and being used increasingly. However, relatively less research on the design and distribution of public transportation network and limitations in quantitative approaches have made implementation and operation practically difficult. Over- or under-supply of transportation routes caused unbalanced connectivity among areas and, thus, differences in time, expenses and metal burden of users traveling the same distances. On the other hand, the Space Syntax theory, originally designed to calculate the connectivity of urban or architectural spaces, helps generate quantitative connectivity of whole space simply based on the spacial structure. This study modified the original Space Syntax algorithm to fit the public transportation problem and showed how it is applied to a transportation network by creating an artificial GIS network.