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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korean Society for Geospatial Information System
Journal Basic Information
Journal DOI :
The Korean Society for Geospatial Information System
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Volume & Issues
Volume 16, Issue 4 - Dec 2008
Volume 16, Issue 3 - Sep 2008
Volume 16, Issue 2 - Jun 2008
Volume 16, Issue 1 - Mar 2008
Selecting the target year
A Study on a Parcel Presentation Technique of Cadastral Map for Enhancing Utilization of National Spatial Data Infrastructure
Jang, Yong-Gu ; Kim, Jong-Hoon ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 3~10
Cadastral map is a public book that has been composed by continuous parcel having location, number, classification, boundary and an area based on Cadastral Law. A few years ago, cadastral map had been managed by form drawn on 2 dimension plane paper with 7 regular scales. Recently as computer systems are upgrading, cadastral map was able to have a chance to develope one step. Its type has been remade from raster to vector. In result, the cadastral map of vector type becomes to apply variously. Therefore, digital cadastral map has been ready a system to be use with multi-propose by KLIS(Korean Land Information System). In this research, it concretely want presentation of status using land more than original parcel on basic coordination cadastral map and KLIS(Korean Land Information System). The cadastral map is composed as parcel unit was applied by new presentation technique to "Model Research on One Parcel Presentation Technique for Land Status of Cadastral Map". The function of cadastral map on One Parcel Presentation Technique which is not only location relation of possession right and expression of states using land in 28 classifications demonstrated on the cadastral law but also used as foundation data of GIS construct business is developed by lines and classification of parcel to center around public sites of roads, rails, drains and rivers. especially, this research is composed of technique elevation and development of One Parcel Projection Technique of cadastral map in using object of roads among public sites.
Corresponding Points Tracking of Aerial Sequence Images
Ochirbat, Sukhee ; Shin, Sung-Woong ; Yoo, Hwan-Hee ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 11~16
The goal of this study is to evaluate the KLT(Kanade-Lucas-Tomasi) for extracting and tracking the features using various data acquired from UAV. Sequences of images were collected for Jangsu-Gun area to perform the analysis. Four data sets were subjected to extract and track the features using the parameters of the KLT. From the results of the experiment, more than 90 percent of the features extracted from the first frame could successfully track through the next frame when the shift between frames is small. But when the frame to frame motion is large in non-consecutive frames, KLT tracker is failed to track the corresponding points. Future research will be focused on feature tracking of sequence frames with large shift and rotation.
Monitoring analysis of Model Slope by using Terrestrial LiDAR data
Kim, Sung-Hak ; Choi, Seung-Pil ; Yang, In-Tae ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 17~23
A model slope was made to work out a way of detecting the sign of the occurrence of landslides and monitoring analysis was conducted to grasp the slope displacement of Terrestrial LiDAR equipment. As a result, the image of slope displacement could be monitored quickly and the accuracy of monitoring analysis was a deviation of 0.007m, 0.006m and 0.006m on average based on the figures prior to displacement after the first, second and third displacements, respectively. As the figures represent a very small deviation, they will be able to be used helpfully in measuring the displacement of actual slope in the future.
Accuracy Comparison Of Ground Control Points extracting from LIDAR Intensity
Wie, Gwang-Jae ; Choi, Yun-Soo ; Oh, Jong-Min ; Lee, Im-Pyung ; Suh, Young-Woon ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 25~31
As we choose ground control points for aerial triangulation, we have a lot of problems in a mountain, a costal area, a desert, the foreshore etc because they don't have clear topography for control points and it spends a lot of cost and occurs problems of accuracy. In this study, we compare and analyze between ground control points from LiDAR intensity, digital map with ground control points from the field survey as doing AT each. As the result, the average error was
from using LiDAR intensity,
from using digital map. this result can present the control points from LiDAR intensity is 0.11m better than from digital map.
Hazard Risk Assessment for National Roads in Gangneung City
Kim, Gi-Hong ; Won, Sang-Yeon ; Youn, Jun-Hee ; Song, Yeong-Sun ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 33~39
Typhoon Lusa in 2002 and Typhoon Maemi in 2003 caused the worst damage of landslide and debris flow to Gangwon-do. This damage includes severe damage in riverside road. The damage register indicates that this damage is concentrated on mountain areas in Gangwon-do. In recent years, the studies on GIS application to predicting landslide and debris flow have been progressing actively. Landslide risk map managed by The Forest Service is the representative one. In this study, we generated landslide and debris flow hazard maps using statistical analysis and deterministic analysis in Gangnung area where Typhoons caused severe damage to riverside roads. We built damage point GIS DB from damage registers of National Road Maintenance Agency and field survey, and verified accuracy of landslide and debris flow hazard maps using GIS methods.
Developing a 3D Indoor Evacuation Simulator using a Spatial DBMS
Kim, Geun-Han ; Kim, Hye-Young ; Jun, Chul-Min ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 41~48
Currently used 3D models, which are mostly focused on visualization of 3D objects and lack topological structure, have limitation in being used for 3D spatial analyses and applications. However, implementing a full topology for the indoor spatial objects is less practical due to the increase of complexity and computation time. This study suggests an alternative method to build a 3D indoor model with less complexity using a spatial DBMS. Storing spatial and nonspatial information of indoor spaces in DB tables enables faster queries, computation and analyses. Also it is possible to display them in 2D or 3D using the queried information. This study suggests a 2D-3D hybrid data model, which combines the 2D topology constructed from CAD floor plans and stored in a spatial DBMS and the 3D visualization functionality. This study showed the process to build the proposed model in a spatial DBMS and use spatial functions and queries to visualize in 2D and 3D. And, then, as an example application, it illustrated the process to build an indoor evacuation simulator.
Construction of Cemetery Management System using Mobile DGPS
Cho, Hyung-Sig ; Sohn, Hong-Gyoo ; Lim, Soo-Bong ; Kim, Seong-Sam ; Kim, Sang-Min ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 49~57
The cemetery areas which are occupied more than 1.0 percent of whole land of Korea have widened gradually but the reconnaissance is not being conducted for the cemetery investigation due to deficiencies for budget and manpower of the government. The aim of this study is to find a method to establish the lower cost GIS-based cemetery management system by using hand-held DGPS receiver and Mobile GIS software system for easy cemetery management. The results were evaluated and compared to the RTK GPS method. Since the Cemetery Management System shows every tomb's position on the high resolution satellite imagery with a cadastral data, the map helps to find the interesting places easily. Therefore the system data can be used for various purposes such as planning for land development, dealing with real estate as well as cemetery management.
Comparison of Species Distribution Models According to Location Data
Seo, Chang-Wan ; Park, Yu-Ri ; Choi, Yun-Soo ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 59~64
We need to use the strength of each Species Distribution Model(SDM) because presence location data were only collected due to time and economic limitations in Korea. This study investigated and compared GAM(Generalized Additive Model) which is one of presence-absence models with Maxent(Maximum Entropy Model) which is one of presence only models according to location data(presence/absence data). The target species was Fisher(Martes pennanti) which is an endangered species in California, USA. We implemented environmental data such as topography, climate and vegetation, and applied models to sub-regions and study area. The results of this study were as follows. Firstly, GAM which used real presence and absence data was better than GAM which used pseudo-absence data and Maxent which used presence-only data. Secondly, Maxent was better than GAM when presence-only data were used. Lastly, each model which applied to different regions didn't predict other area well due to the difference of habitat environment and over-predicted outside of study area. We need to select an optimal model to predict a suitable habitat according to the type and distribution of location data.
EConnectivity and Accessibility Measurement of Facilities in a Residential Complex
Seo, Hyun-Ji ; Chang, Hoon ; Lee, Se-Hyung ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 65~71
In this study, two residential complexes, both built in the New City area after 2006 and both composed of over 500 households, were selected to estimate an efficient accessibility and connectivity index using accessibility and connectivity theories and methods from previous studies. With architectural blueprints, the nodes and edges of both residential complexes were drawn out and the accessibility matrixes were derived using these nodes and edges. As a result, the connectivity indices of both residential complexes were lower than 1, the accessibility index of Dong-tan was 86.922 being smaller than the accessibility index of Ilsan, 96.199, and the efficiency index of both residential complexes were similar being 0.26. With these indices it is expected to geometrically estimate the residential complexes and predict the pedestrian passing conveniences.
Urban sprawl and its impact on the land cover-a geospatial study
Jayakumar, S. ; Enkhbaatar, Lkhagva ; Heo, Joon ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 73~78
The present study was aimed to estimate the urban sprawl in a historical city of India using series of satellite data between 1968 and 2005(37 years) and GIS. The total area of the Tiruchirappalli city was 1991.96 ha during 1968 and it was expanded into 4335.98 ha(117.67%) during 2005. The average growth rate per year was 63.35 ha. This 117.67% growth was at the cost of agriculture land(97.81%) and water body(2.19%). The satellite data used in this study were found to be good source of information for this kind of analysis and further studies are need to estimate the impact of this city expansion on agriculture yield and ground water.
Geocoding of Low Altitude UAV Imagery using Affine Transformation Model
Kim, Seong-Sam ; Jung, Jae-Hoon ; Kim, Eui-Myoung ; Yoo, Hwan-Hee ; Sohn, Hong-Gyoo ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 79~87
There has been a strong demand for low altitude UAV development in rapid mapping not only to acquire high resolution image with much more low cost and weather independent, compared to satellite surveying or traditional aerial surveying, but also to meet many needs of the aerial photogrammetry. Especially, efficient geocoding of UAV imagery is the key issue. Contrary to high UAV potential for civilian applications, the technology development in photogrammetry for example direct georeferencing is in the early stage and it requires further research and additional technical development. In this study, two approaches are supposed for automatic geocoding of UAV still images by simple affine transformation and block adjustment of affine transformation using minimal ground control points and also evaluated the applicability and quality of geometric model compared to geocoded images generated by commercial S/W.
Improvement Scheme for 3D Land Geospatial Information Construction
Park, Jun-Ku ; Cho, Woo-Sug ; Noh, Myoung-Jong ; Song, Nak-Hyeon ; Kim, Min-Chul ;
Journal of Korean Society for Geospatial Information System, volume 16, issue 4, 2008, Pages 89~99
In Korea, currently 10 local governments have completed the construction of the 3D Land Geospatial Information, since the pilot project started in 2004 and many other local governments are additionally constructing the 3D Land Geospatial Information. Technical Guidance for the 3D Land Geospatial Information has made out the construction methodology and concept of the ordinances in 2006 by the basis of the research results of the pilot project for the 3D Geospatial Information construction in 2005. But the result that applied the existing 3D Land Geospatial Information of the local governments, many problems rearing up on the methods and expression accuracy of the 3D Land Geospatial Information. This research analyzed and derived problems of established guideline for the zero-defects construction of the 3D Land Geospatial Information and it is aim at the present standardized criterion of the reestablished and method of the 3D Geospatial Information construction items. Improvement scheme of the 3D Land Geospatial Information is considered to be contribute to the standardized good quality of 3D Land Geospatial Information construction and its application.