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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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Journal DOI :
Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography
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Volume & Issues
Volume 29, Issue 6 - Dec 2011
Volume 29, Issue 5 - Oct 2011
Volume 29, Issue 4 - Aug 2011
Volume 29, Issue 3 - Jun 2011
Volume 29, Issue 2 - Apr 2011
Volume 29, Issue 1 - Feb 2011
Selecting the target year
A new method for automatic areal feature matching based on shape similarity using CRITIC method
Kim, Ji-Young ; Huh, Yong ; Kim, Doe-Sung ; Yu, Ki-Yun ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 113~121
DOI : 10.7848/ksgpc.2011.29.2.113
In this paper, we proposed the method automatically to match areal feature based on similarity using spatial information. For this, we extracted candidate matching pairs intersected between two different spatial datasets, and then measured a shape similarity, which is calculated by an weight sum method of each matching criterion automatically derived from CRITIC method. In this time, matching pairs were selected when similarity is more than a threshold determined by outliers detection of adjusted boxplot from training data. After applying this method to two distinct spatial datasets: a digital topographic map and street-name address base map, we conformed that buildings were matched, that shape is similar and a large area is overlaid in visual evaluation, and F-Measure is highly 0.932 in statistical evaluation.
Sea Surface Temperature Analysis for the Areas near Gwang-Yang Steel Mill using LANDSAT Thermal Data
Kim, Sang-Min ; Kim, Chang-Jae ; Han, Soo-Hee ; Heo, Joon ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 123~131
DOI : 10.7848/ksgpc.2011.29.2.123
Characteristics of sea surface temperature(SST) difference around Gwang-Yang steel Mill where can affect marine ecosystem in Gwang-Yang bay using 25 collected Landsat-7 ETM+ thermal infrared band data from 2000 to 2010. To analyze accuracy of SST from the Landsat-7 ETM+ thermal infrared image， satellite-induced SST was verfied by compared Yeo-Su tide station and Landsat thermal image. As a result, SST from Landsat-7 ETM+ is
lower than sea temperature from Yeo-Su tide station and correlation coefficient resulted in above 0.991 which means that correlation coefficient between Landsat image temperature and field sea temperature is relatively high. Five regions were selected to analyze sea surface temperature between near Gwang-Yang steel mill and the open sea and analyzed timeseries of sea surface temperature seasonally and regionally. Moreover, the additional analysis has been carried out by comparing the averaged temperatures of Gwang-Yang and Soon-Cheon bays using the dataset over a year.
Effect of Location Error on the Estimation of Aboveground Biomass Carbon Stock
Kim, Sang-Pil ; Heo, Joon ; Jung, Jae-Hoon ; Yoo, Su-Hong ; Kim, Kyoung-Min ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 133~139
DOI : 10.7848/ksgpc.2011.29.2.133
Estimation of biomass carbon stock is an important research for estimation of public benefit of forest. Previous studies about biomass carbon stock estimation have limitations, which come from the used deterministic models. The most serious problem of deterministic models is that deterministic models do not provide any explanation about the relevant effects of errors. In this study, the effects of location errors were analyzed in order to estimation of biomass carbon stock of Danyang area using Monte Carlo simulation method. More specifically, the k-Nearest Neighbor(kNN) algorithm was used for basic estimation. In this procedure, random and systematic errors were added on the location of Sample plot, and effects on estimation error were analyzed by checking the changes of RMSE. As a result of random error simulation, mean RMSE of estimation was increased from 24.8 tonC/ha to 26 tonC/ha when 0.5~1 pixel location errors were added. However, mean RMSE was converged after the location errors were added 0.8 pixel, because of characteristic of study site. In case of the systematic error simulation, any significant trends of RMSE were not detected in the test data.
Small Scale Digital Mapping using Airborne Digital Camera Image Map
Choi, Seok-Keun ; Oh, Eu-Gene ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 141~147
DOI : 10.7848/ksgpc.2011.29.2.141
This study analyzed the issues and its usefulness of drawing small-scale digital map by using the large-scale digital map which was producted with high-resolution digital aerial photograph which are commonly photographed in recent years. To this end, correlation analysis of the feature categories on the digital map was conducted, and this map was processed by inputting data, organizing, deleting, editing, and supervising feature categories according to the generalization process. As a result, 18 unnecessary feature codes were deleted, and the accuracy of 1/5,000 for the digital map was met. Although the size of the data and the number of feature categories increased, this was proven to be shown due to the excellent description of the digital aerial photograph. Accordingly, it was shown that drawing a small-scale digital map with the large-scale digital map by digital aerial photograph provided excellent description and high-quality information for digital map.
A study on the Results Analysis of Territorial Sea Baselines
Lee, Yong-Wook ; Kang, Eun-Chul ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 149~155
DOI : 10.7848/ksgpc.2011.29.2.149
As the depletion of land resources, the attention about marine resources has been focused on. Neighboring countries such as Japan and China to expand their marine territory invest more governmental money. The exact territorial sea baselines can be the scientific data which cad resolve the dispute between the neighboring countries. So, those territorial sea baselines should be maintained systematically and continuously. Because territorial sea baselines surveyed 10 years ago without updating, the review may be needed. In this study, we compared 2009 year surveying results with past territorial sea baselines results for reviews. As a results, Jeju Island represents a large difference. So, the outputs of territorial sea baselines around Jeju Island should be readjusted. Through this study, the ongoing maintenance of the territorial sea baselines is required. The continuing interest in the maritime boundary, as well as defend in terms of protection for undersea resources are needed.
RPC-based epipolar image resampling of Kompsat-2 across-track stereos
Oh, Jae-Hong ; Lee, Hyo-Seong ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 157~164
DOI : 10.7848/ksgpc.2011.29.2.157
As high-resolution satellite images have enabled large scale topographic mapping and monitoring on global scale with short revisit time, agile sensor orientation, and large swath width, many countries make effort to secure the satellite image information. In Korea, KOMPSAT-2 (KOrea Multi-Purpose SATellite-2) was launched in July 28 2006 with high specification. These satellites have stereo image acquisition capability for 3D mapping and monitoring. To efficiently handle stereo images such as stereo display and monitoring, the accurate epipolar image generation process is prerequisite. However, the process was highly limited due to complexity in epipolar geometry of pushbroom sensor. Recently, the piecewise approach to generate epipolar images using RPC was developed and tested for in-track IKONOS stereo images. In this paper, the piecewise approach was tested for KOMPSAT-2 across-track stereo images to see how accurately KOMPSAT-2 epipolar images can be generated for 3D geospatial applications. In the experiment, two across-track stereo sets from three KOMPSAT-2 images of different dates were tested using RPC as the sensor model. The test results showed that one-pixel level of y-parallax was achieved for manually measured tie points.
A Comparison of LOS Detection Probability Area for DEM and DSM
Song, Hyun-Seung ; Park, Wang-Yong ; Park, Hyun-Chun ; Lee, Young-Lim ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 165~173
DOI : 10.7848/ksgpc.2011.29.2.165
Generally, A acquisition of the target is affected by the detector performance and whether it is covered with features or not. This paper represented the comparative analysis of the detection probability for DEM and DSM, when we used by the infrared surveillance device. In the first place, we c1assified as the visible area and invisible area for DEM and DSM, and obtained the acquisition probability values using the ACQUIRE mode. We have known that The Detection Probability of the DSM is very lower than the DEM and is rising when elevates the height value of the detection point.
The comparison of spatial/spectral distortion on the hybrid pansharpened images by the spatial correlation methods
Choi, Jae-Wan ; Kim, Dae-Sung ; Kim, Yong-Ii ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 175~181
DOI : 10.7848/ksgpc.2011.29.2.175
In remote sensing, it has been a difficult task to obtain a multispectral image with high spatial resolution because of the technical limitation of satellite sensors. In order to solve these problems, various pansharpening algorithms have been tried and proposed. However, most pansharpened images created by various approaches tend to distort the spectral characteristics of the original multispectral image or decrease the visual sharpness of the panchromatic image. To minimize the spectral distortion of pansharpened image while preserving spatial information of the panchromatic image, a hybrid pansharpening algorithm based on the spatial correlation was proposed. In this paper, we analyzed the spatial and spectral distortion of the hybrid pansharpened images generated by the various spatial correlation methods. In the experiments, we proved that the method by using Laplacian filtering was more efficient than other high frequency extraction algorithms in the viewpoint of spectral distortion and spatial sharpness.
A Study on the Urban Climate Mapping Method Using GIS
Choi, Byoung-Gil ; Cho, Tae-In ; Na, Young-Woo ; Lee, Kwang-Won ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 183~191
DOI : 10.7848/ksgpc.2011.29.2.183
The objective of this study is 10 investigate the method to produce urban climate map so as to cope with climate change and efficiently control greenhouse gas in the city by using GIS. To produce urban climate map by using GIS, statistical data and spatial data of greenhouse gases related to climate change were collected and analyzed and the correlation between the type of urban climatop and urban climate change was analyzed by establishing GIS framework data construction method to prepare urban climate map and preparing and analyzing urban climate map related to the demonstration area. It was found that exact greenhouse gases emission quantity and absorption quantity can be calculated for each type of urban climatop by preparing urban climate map and the temperature is high in residential area, commercial area and industrial area and the emission quantity per unit area is high in the traffic area and industrial area. It seems that the influence of climate change can be presented for urban development by suggesting urban climate change for type of urban climatop and they can be utilized to save energy in urban area and to establish greenhouse gases reducing policy.
Comparison of SPOT-5 DEM Control with SRTM DEM
Lee, Hyo-Seong ; Han, Dong-Yeob ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 193~199
DOI : 10.7848/ksgpc.2011.29.2.193
It is necessary to register precisely Digital Elevation Model (DEM) generated from SPOT -5 stereo images in order to monitor the topographic and environmental changes of important topographic features such as Mt. Baekdu. The SPOT-5 DEM is registered taking SRTM DEM as a reference DEM. If SPOT-5 DEM is transformed with single 3D rigid equation, it has many errors. Therefore, this study extracted uniformly ground control points over study area and estimated locally adapted transformation equation. The accuracy of proposed method was evaluated with comparison to scale-based and GCP-based transformation method.
VRS-based Precision Positioning using Civilian GPS Code Measurements
Bae, Tae-Suk ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 201~208
DOI : 10.7848/ksgpc.2011.29.2.201
With the increase in the number of smartphone users, precise 3D positional information is required by various applications. The positioning accuracy using civilian single-frequency pseudoranges is at the level of 10 m or so, but most applications these days are asking for a sub-meter level Therefore, instead of an absolute positioning technique, the VRS-based differential approach is applied along with the correction of the double-differenced (DD) residual errors using FKP (Flachen-Korrektur-Parameter). The VRS (Virual Reference Station) is located close to the rover, and the measurements are generated by correcting the geometrical distance to those of the master reference station. Since the unmodeled errors are generally proportional to the length of the baselines, the correction parameters are estimated by fitting a plane to the DD pseudorange errors of the CORS network. The DD positioning accuracy using 24 hours of C/A code measurements provides the RMS errors of 37 cm, 28 cm for latitudinal and longitudinal direction, respectively, and 76 cm for height. The accuracy of the horizontal components is within
for about 90% of total epochs, and in particular the biases are significantly decreased to the level of 2-3 cm due to the network-based error modeling. Consequently, it is possible to consistently achieve a sub-meter level accuracy from the single-frequency pseudoranges using the VRS and double-differenced error modeling.
Hydroacoustic Application of Bathymetry and Geological Survey for Efficient Reservoir Management
Yun, Hong-Sik ; Cho, Jae-Myoung ;
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, volume 29, issue 2, 2011, Pages 209~217
DOI : 10.7848/ksgpc.2011.29.2.209
This study incorporate hydroacoustic sampling for bathymetry and sediment survey in Won Cheon reservoir, Suwon city, Korea. Bathymetric and sedimentation surveys were conducted using a echo sounder system and subbottom profiler in the reservoirs. Data were collected using echo sounder systems and subbottom profiler linked to a GPS, to maximize data accuracy and vessel use, and geo-referenced using a DGPS enabling the acoustic data to be used in a GIS. Echo sounder and subbottom survey data were merged within geographic information system(GIS) software to provide detailed visualization and analyses of current depths, pre-impoundment topography, distribution, thickness, and volume estimates of lacustrine sediment, and water storage capacity. These data and analyses are, necessary for development of long term management plans for these reservoirs and their watersheds.