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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 11, Issue 4 - Dec 2003
Volume 11, Issue 3 - Sep 2003
Volume 11, Issue 2 - Jun 2003
Volume 11, Issue 1 - Mar 2003
Selecting the target year
Application of Mobile GIS for Structure Safety and Management
Yoo, Hwan-Hee ; Kang, Sung-Bong ; Lee, Sung-Min ; Kang, Teack-Sun ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 3~9
Recent construction industry is going through much change as getting high-quality, high-technology and environment-friendly, and a safety countermeasure is required urgently as construction structures become larger and more complex. But, Safety management was ignored under quantity-oriented construction policy and that has led to large-scale accidents. Recently, interest for safety management and effective construction of safety management system has been enhanced. Therefore, in this study, we constructed safety management system using Mobile GIS for effective building safety management. As the result, we proposed a method which can manage buildings quickly and effectively as performing data accessibility, storage, and analysis directly in the field.
A Study on Soil loss in Forest fire area
Yang, In-Tae ; Park, Jae-Hoon ; Chun, Ki-Sun ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 11~16
Soil loss by the rains has effect on natural environment. But It is difficult to find out the data that is surveyed in watershed. In this paper, we choose USLE erosion model, which could be connected easily with GSIS and available generally, and extracted factors which is entered model by using GSIS spatial analysis method. Especially, As revised USLE model, It should be applied in watershed and as it calculated soil loss before Idlest fire and behind, it analysed the degree that it have an effect on soil loss. As each analyzed factors and the result of soil loss estimate consist of 22m-pixel size, we could identify soil loss by each pixel and distribution pattern.
Temporal Urban Growth Monitoring using Landsat Imagery and Pycnophypactic Interpolation Method - The case of Seoul Metropolitan Area -
Chang, Hoon ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 17~28
Since 1970s, Seoul Metropolitan Area has been growing in physical and demographic aspect. A number of new urban fringes, New City, had been particularly developed from the early of 1990s. To examine the urban growth, the population density maps are generally used to the efficient urban management tool. The density maps from political boundaries, however, were traditionally used to estimate an urban concentration, there is problems to apply directly to urban management decision making due to (i) the abrupt changes between boundaries and (ii) the inclusion of green areas and forests in these areas. The mass-preserving interpolation method, the Pycnophylactic interpolation, could provide more realistic density maps. In addition, the classified urban areas from satellite images corresponding years would turn out to be more reliable results since populations were only applied to urbanized areas. Even though the Pyconophylactic method makes the density larger, it would be useful to produce a general urban growth trend at large scale. Consequently, four different density maps are compared and reviewed for this study, and the cross-sectional analysis provided to glimpse of population density around the city center.
Automatic Measuring of GCP's Image Coordinates using Control Point Patch and Auxiliary Points Matching
Kang, Myung-Ho ; Bang, Soo-Nam ; Lee, Yong-Woong ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 29~37
An approach is described for automatic measuring of GCP's image coordinates from SPOT imagery and focused on the fulfillment an automatic orientation of satellite images. For the orientation of a stereopair of digital images, firstly, GCP(Ground Control Point) should be selected and then the work for measuring of image coordinates correspond to GCPs is required. In this study, we propose the method for extracting the GCP's image coordinates automatically using an image patch for control points and auxiliary points matching. For the evaluation of measurement accuracy, a comparison between points those are extracted manually and automatically by a proposed method have made. Finally, we shows the feasibility of automatic image coordinates measurment by applying in stereo modeling for SPOT images.
Development of Extracting Method of Horizontal Alignment in a Tunnel Using Positioning Satellite Data
Kim, Jin-Soo ; Jang, Ho-Sik ; Lee, Jong-Chool ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 39~45
Roads have been developed throughout the history of mankind, and play a significant role among many traffic facilities for the economy, politics and cultures of our lives. However, the management of roads has not been fully scientific or systematic due to governmental policies focused on construction resulting in damages, and the loss of drawings for existing roads. In this case, it is difficult to manage roads using normal cadastre due to its time consuming work. And, when applying satellite surveying to rapidly extract the centerline of roads, it is impossible to obtain data about the status of internal tunnels. Therefore, this study can be used to extract optimum alignment data of tunnels using the data from satellite surveying, and is a practical paper which can contribute to efficient management and usage of alignment data and road facilities in establishing a HMS(Highway Management System) for the renewal and management of the alignment data of roads, by comparing the data from satellites with the alignment data in existing drawings.
Change Vector Analysis : Change detection of flood area using LANDSAT TM Data
Yoon, Geun-Won ; Yun, Young-Bo ; Park, Jong-Hyun ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 47~52
Change detection and analysis is a powerful application of remote sensing, in that the spectral resolution of multi-band sensors can be used to advantage in monitoring both significant and subtle land cover changes over time. In this study, the LANDSAT TM data was used to detect the change areas affected by flood from a heavy rainfall. The study area is the Nakdong River located in the Korea peninsular. Among the several change detection techniques, change vector analysis(CVA), principle component analysis(PCA) and image difference approach are utilized in this paper. CVA uses any number of spectral bands from multi-date satellite data to produce change image that yield information of the magnitude and direction of differences pixel values. And accuracy assessment was carried out with a change image produced from three techniques. In result, CVA was found to be the most accurate for detecting areas affected by flood. CVA with the overall accuracy and Kappa coefficient of 97.27 percent and 94.45 percent, respectively.
Development on Management System of Structure's Displacement Using GPS
Roh, Tae-Ho ; Lee, Jong-Chool ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 53~59
Many facilities have been constructed due to the rapid development of science and economy, and the tendency for larger sizes and higher stories in constructing are being accelerated due to the development of technologies, and the efficient use of limited spaces. The safety problems of constructions are being frequently brought up. So, a technique by which the monitoring of the safety of constructions can be easily done must be developed as soon as possible. In this research an management system for structure's displacement using satellite survey was studied. The results of having established the management system for structure's displacement as a GPS positioning system were that data acquisition was easier than that from using normal survey equipment, and data from the satellite survey can be applied to the database of management system. The data of the GPS suey were rather large values to determine the safety of single stories, but can probably be used in establishing the management system using the structure's displacement.
Change Detection Using the IKONOS Satellite Images
Kang, Gil-Seon ; Shin, Sang-Cheul ; Cho, Kyu-Jon ;
Journal of Korean Society for Geospatial Information System, volume 11, issue 2, 2003, Pages 61~66
The change detection using the satellite imagery and airphotos has been carried out in the application of terrain mapping, environment, forestry, facility detection, etc. The low-spatial resolution data such as Landsat, NOAA satellite images is generally used for automatic change detection, while on the other hand the high-spatial resolution data is used for change detection by image interpretation. The research to integrate automatic method with manual change detection through the high-spatial resolution satellite image is performed. but the problem such as shadow, building 'lean' due to perspective geometry and precision geocorrection was found. In this paper we performed change detection using the IKONOS satellite images, and present the concerning problem.