• 한국HCI학회:학술대회논문집
• /
• 2006.02a
• /
• pp.362-367
• /
• 2006

지능형 주거공간에서 손 지시 명령을 통하여 가전기기를 선택하거나 로봇에게 이동하여야 하는 장소를 알려 주기 위해, 기존의 시스템은 선택되는 대상 기기의 3 차원 절대 위치를 미리 알고 있어야 한다. 또한 카메라 위치가 변동되었을 경우, 카메라의 위치를 절대좌표계 기준으로 새롭게 측정해야 하는 불편함이 있다. 이를 해결하기 위해 본 논문에서는 팬/틸트 모듈을 가진 두 대의 USB 카메라를 임의의 위치에 배치하더라도, 두 번의 손 지시만으로 선택 대상이 되는 기기의 3 차원 위치를 파악하고 이를 동작시키는 방법을 다룬다. 제안하는 방법에서는 두 대의 카메라 간의 상대 좌표계를 형성하기 위해 각 카메라에 표식을 부착한다. 각 카메라에서 다른 카메라의 표식을 관찰하면 카메라 간의 거리 및 각도를 구할 수 있기 때문에, 하나의 카메라를 기준으로 3 차원 절대 좌표계를 자동으로 설정할 수 있다. 또한, 두 대의 카메라로 사용자의 얼굴과 손을 검출하면 얻어진 기준 좌표계에 대해 얼굴과 손의 3 차원 위치를 계산하고, 두 지점을 연결하는 방향 벡터를 구함으로써 사용자가 손으로 지시하는 방향을 찾는다. 따라서, 카메라를 임의의 위치에 두더라도 사용자의 손 지시 동작만으로 대상체의 차원 위치를 파악할 수 있게 된다. 개발된 시스템의 유용성을 검증하기 위해 각 가전기기의 위치를 제안한 방법으로 구하고 실제 위치와의 오차를 분석하였다. 제안한 방법은 두 대의 USB 카메라와 일반 PC 또는 마이크로 프로세서만으로 구현할 수 있기 때문에 비용이 적게 들고 실시간 처리가 가능하며 사용자의 환경에서 편리성을 높이는 등 많은 장점을 가진다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.27 no.6
• /
• pp.669-678
• /
• 2009

Real-time image georeferencing technologies are required to generate spatial information promptly from the image sequences acquired by a multi-sensor system. We thus derive a sequential adjustment algorithm based on the combined adjustment model. By adopting the sequential adjustment model, we develop a sequential AT(Aerial Triangulation) algorithm to georeference image sequences in real-time. The proposed algorithm enables to perform AT rapidly with the minimum computation at the current stage by using the results computed at the previous stage whenever a new image is added. Experiments with simulated data were conducted to verify the effectiveness of the proposed algorithm. The results of the experiments show that the georeferencing of each image took very short time and its accuracy was determined within ${\pm}4cm$ on the ground control points comparing to the results of the existing simultaneous AT.

• Proceedings of the KSR Conference
• /
• 2010.06a
• /
• pp.1525-1532
• /
• 2010

Modern surveying techniques have been progressed to get the absolute position of a single coordinate system at any point on the earth with the advent of the Global Navigation Satellite System and One-stop digital equipment. In addition, as the speed of the railway has been increasingly faster, in determining the location of major facilities including the center of tracks, it is required to the sophisticated precision. The surveying of railway construction has applied the technical supports and procedures in accordance with the current requirements. In this study, the applicable guidelines of surveying on practical issues and alternatives would be examined, analyzed, and presented by using the empirical data of pilot areas in the process of design, construction, and the maintenance of railway.

• Proceedings of the KAIS Fall Conference
• /
• 2009.05a
• /
• pp.13-17
• /
• 2009

In this thesis, we made a sheet to improve the concentration of study. To demonstrate the improvement in the concentration of study, we obtained functional magnetic resonance imaging (fMRI), which has superior time resolution and measures brain noninvasively by using intrinsic contrast agent. As a result of Brainwave measurement, we could verify the blood flow's activate in the nearby frontal lobe related to memory process and noticeable ratio change in absolute alpha wave and beta wave after the analysis of Brainwave measurement. fMRI ascertains the physiological function of the brain and is being used to prevent the trouble medically that can be caused before and after the operation. For the visibility of cranial nerve network, many researches will be carried out to develope the product which is related to brain like concentration of study.

• Journal of Korean Society for Geospatial Information Science
• /
• v.18 no.3
• /
• pp.83-90
• /
• 2010

In modern society, there has been an increase in needs to protect the life and property of the people, because the number of various crimes is on the increase due to the sudden and complicated changes of the urban environment. For the needs, security persons in the urban area are expanding the role and skill of police for more effective crime prevention and surveillance, although the number of policeman/woman is insufficient and their tasks are hard. Recently, a system to observe and prevent crime in effective has been introduced by using such an artificial surveillance device as CCTV to monitor focusing on one area for 24 hours. However, the system brings such problems as the insufficiency of systematic criteria to install surveillance device and the invasion of privacy. Therefore, in this study, artificial surveillance zones to monitor crimes are selected by applying spatial features between artificial surveillance devices including CCTV and crime occurrence place, and using GIS spatial analysis techniques. As a result of selecting, it's found that the number of CCTV is absolutely insufficient and spatial distribution is not fully considered in the existing location of installed CCTV.

• Proceedings of the Korean Society of Agricultural Engineers Conference
• /
• 2000.10a
• /
• pp.1-24
• /
• 2000

21세기는 생명, 환경, 정보를 주제로 새 시대를 맞이하고 있다. 20세기 절대빈곤에서 벗어나기 위한 성장제일주의의 경제개발정책은 짧은 시간에 성공적으로 달성되어 높은 문화수준과 산업사회를 이룰 수 있었다. 한편, 국민생활향상과 산업발전에 결정적 역할을 해왔던 수자원개발은 동강에서, 시화호에서, 지리산, 인천 앞바다에서 개발 부작용으로 생태와 환경이 심한 몸살을 앓기 시작하고 있다. WTO에 의한 시장개방으로 생산구조가 붕괴되고 농촌지역이 공동화될 것을 걱정하고 있다. 누군가는 농촌에서 농사를 짓고 살아야만 국가의 산업구조가 유지되고 아름다운 국토의 자연환경을 보전할 수 있다. 농촌은 식량생산을 위한 공간과 인간생활을 위한 공간 등 두 가지 기능을 가진 공간이다. 쾌적한 농촌을 이룩하려면 농업생산성을 향상시켜 농업소득을 높이고, 농공단지의 활성화와 농촌관광과 휴양시설에 의한 농외소득을 강화해야 한다. 또한, 농업은 식량의 안정적 공급은 물론 홍수 및 토양침식 억제, 수자원함양, 수질정화, 대기정화, 생물 다양성 등 환경보전적 기능이 WTO에 대응하여 쌀시장을 지킬 수 있는 논리로 새롭게 평가받고 있다. George Brokeway (경제인의 종말, 1991)의 “ 이윤극대화라는 경제원칙이 인간의 자연파괴와 기상이변 앞에 모순을 드러내고 있어 경제학의 인간화를 요구하고 있다.”는 지적에 비교우위론자들은 다시 한번 귀기울여주기 바란다.

• Journal of Korea Water Resources Association
• /
• v.51 no.8
• /
• pp.629-642
• /
• 2018

Future variability of the spatial patterns of rainfall events is the point of water-related risks and impacts of climate change. Recent related researches are mostly conducted based on the outcomes from General Circulation Models (GCMs), especially Coupled Model Intercomparison Project, phase 5 (CMIP5) GCMs which are the most advanced version of climate modeling system. GCM data have been widely used for various studies as the data utility keep getting improved. Meanwhile the model performances especially for raw GCM outputs are rarely evaluated prior to the applications although the process would essential for reasonable use of model forecasts. This study attempt to quantitatively evaluate the skills of 29 CMIP5 GCMs in reproducing spatial climatologies of precipitation in East Asia. We used 3 different gridded observational data as the references available over the study area and calculated correlation and errors of spatial patterns simulated by GCMs. As a result, the study presented diversity of the GCM evaluation in the performance, rank, or accuracy by different configurations, such as target area, evaluation method, and observation data. Yet, we found that Hadley-centre affiliated models comparatively performs better for the meso-scale area in East Asia and MPI_ESM_MR and CMCC family showed better performance specifically for the korean peninsula. We expect that the results and thoughts of this study would be considered in screening suitable GCMs for specific area, and finally contribute to extensive utilization of the results from climate change related researches.

• Journal of Korean Society for Geospatial Information Science
• /
• v.15 no.4
• /
• pp.103-109
• /
• 2007

Ortho images and Digital Elevation Model (DEM) have been applied in various fields. It is necessary to acquire Ground Control Points (GCPs) for processing high resolution satellite images. However surveying GCPs require many time and expense. This study was performed to investigate whether GCPs automatically extracted from ortho images and DTED Level 2 can be applied to sensor modeling for high resolution satellite images. We analyzed the performance of the sensor model established by GCPs extracted automatically. We acquired GCPs by matching satellite image against ortho images. We included the height acquired from DTED Level 2 data in these GCPs. The spatial resolution of the DTED Level 2 data is about 30m. Absolution accuracy of this data is below 18m above MSL. The spatial resolution of ortho image is 1m. We established sensor model from IKONOS images using GCPs extracted automatically and generated DEMs from the images. The accuracy of sensor modeling is about $4{\sim}5$ pixel. We also established sensor models using GCPs acquired based on GPS surveying and generated DEMs. Two DEMs were similar. The RMSE of height from the DEM by automatic GCPs and DTED Level 2 is about 9 m. So we think that GCPs by DTED Level 2 and ortho image can use for IKONOS sensor modeling.

• Archives of design research
• /
• v.16 no.3
• /
• pp.391-400
• /
• 2003

As the change of information and digital technology progresses, ubiquitous space is attracting attention as a new space concept in which the physical and digital spaces are connected to each other. As its meaning in latin itself - 'there exist everywhere at the same time'- implies, however, the ubiquitous space has been mostly discussed in a non-physical aspect, such as in a technological area, rather than its physical intrinsic property until now. Although theories regarding a ubiquitous city have been rarity suggested, in most cases, technological aspects such as the systemization or networking of individual information service have been the focus. However, one of the intentions induced in the concept that scholars including Mark weiser and Sakamura Ken introduced was to place humans in the center of the space in which the technology has been placed instead of humans. For this purpose, the renovation of human interface must be required. As technology develops, the achievement of ubiquitous space may be possible, and efforts to apply this to real space are making an appearance. The examples of the present research are the spaces that have a characteristic of the laboratory separated from life in the city, and the construct scale is in the level of an individual facility; therefore, further studies should functionally and spaciously connect all subjects existing in space and effectively relate this to real world. The present research is intended to demonstrate the investigation on several projects that are currently underway and the developmental direction of new, ubiquitous space.

• Journal of the Economic Geographical Society of Korea
• /
• v.9 no.2
• /
• pp.149-166
• /
• 2006

The purpose of this study is to produce time-distance cartograms based on the various Korean transportation networks, and to analyze the spatial structure of time-distance accessibilities. For the purpose this study attempts to develop continuous area cartogram by utilizing Wolf's algorithm for creating contiguous cartogram in ArcGIS 9. The absolute physical space was transformed to the functional space indexed by time-distances along various transportation networks in Korea. We examined the differences in the time-distance accessibilities among transportation networks. This study makes a comparison between the spatial structure of time-distance accessibility of KTX network with them of existing railroad network, as well as with them of road network. In order to clarify the spatial structures of time-distance accessibilities, we restructured them on the time-distance circular diagrams and performing Multi-Dimensional Scaling analysis. Overall structure of time-distance accessibilities shows similar patterns: The time distances are shrinked a lot along the Seoul-Busan axis, while coastal parts, in particular the eastern part of the county, are shrinked relatively little via all transportation networks. The Road network affects significantly on the accessibilities of cities in Gangwon-do and Gyeonggi-do, while railway network affects on the accessibilities of cities in Jeolla-do and Gyeongsang-do in general. When we compared the time-distance accessibilities based on the 5 largest cities, Seoul appears as the most accessible city from/to all other cities in Korea. We can also find significant changes in the time-distance accessibility between KTX network and existing railroad network. Cities along the KTX network, in particular cities which has KTX stops, improved significantly in time-distance accessibilities.