Suchergebnisse

The Korean Government has executed the research project named "The development of spatial information-based high-reality contents provision technology for disaster management". The goal of this project is to develop and verify a Safety Index Map and a 3D safety status information platform for spatial information based customized disaster management service. This paper deals with the design of application architecture for spatial information based 3D safety state information platform. First, we analysed the use cases of existing disaster management platform and the needs of business users. Second, based on the analysed results, target facilities were selected and possible service scenarios were created. Finally, we designed application architecture with service development strategy and users' requirements. The results of this research could be used for detail design of technical architectures (DA/SA/HA/NA).

The Korean Government has executed the research project named "The development of spatial information-based high-reality contents provision technology for disaster management". The goal of this project is to develop and verify a Safety Index Map and a 3D safety status information platform for spatial information based customized disaster management service. This paper deals with the design of application architecture for spatial information based 3D safety state information platform. First, we analysed the use cases of existing disaster management platform and the needs of business users. Second, based on the analysed results, target facilities were selected and possible service scenarios were created. Finally, we designed application architecture with service development strategy and users' requirements. The results of this research could be used for detail design of technical architectures (DA/SA/HA/NA).

The Korean Government has executed the research project named "The development of volcanic disaster response system". The phase I of this project was completed at 2015. From the year 2015, phase II of the project has been executed. The goal of the phase II is advancing the system which was developed at phase I. This paper deals with the design of application architecture for spatial information based volcanic disaster response system. First, we analyses application architecture of phase I system. Next, users' requirements are analysed. Main requirements are three. One is extending spatial scope for volcanos. Another is developing real-time processing model for direct disaster. The other is multi-scenarios based processing. User's requirements are stepped down to variable levels to adjusted application architecture in the system. Finally, we design altered application architecture comparing with architecture of phase I system and users' requirements. The results of this research could be used for detail design of technical architectures (DA/SA/HA/NA).

The Korean Government has executed the research project named "The development of volcanic disaster response system". The phase I of this project was completed at 2015. From the year 2015, phase II of the project has been executed. The goal of the phase II is advancing the system which was developed at phase I. This paper deals with the design of application architecture for spatial information based volcanic disaster response system. First, we analyses application architecture of phase I system. Next, users' requirements are analysed. Main requirements are three. One is extending spatial scope for volcanos. Another is developing real-time processing model for direct disaster. The other is multi-scenarios based processing. User's requirements are stepped down to variable levels to adjusted application architecture in the system. Finally, we design altered application architecture comparing with architecture of phase I system and users' requirements. The results of this research could be used for detail design of technical architectures (DA/SA/HA/NA).

Sound localization is the listener's ability to detect the location of a sound based on direction and distance. The aim of this study was to evaluate the ability to orient to sounds of goalball players with visual impairment ( n = 19), non-players with visual impairment ( n = 16), and their sighted peers ( n = 15). All participants were in middle or high school. An acoustics room with four speakers was used to assess sound localization abilities. Results revealed that the goalball players with visual impairments had better localization performance ( p = .001) than the other two groups. The results suggest that engaging in goalball play may support sound localization, a skill useful in orientation and mobility, and other daily living skills.

As natural disaster occurs, the local and the central government should investigate the damaged fields promptly, analyze quantitatively the degree of damage, and establish an appropriate disaster recovery plan in accordance with Framework Act on the Management of Disasters and Safety in Korea. The purpose of this study is to assess the applicability of UAV photogrammetry for the management of natural disaster. First, we suggest small easy-to-use UAV-based investigation procedure for natural disaster damaged area in the phase of disaster recovery in Korea. Before drone-based aerial surveying, the field survey can be performed with DGPS RTK for GCPs setting-up around disaster site. In this paper, we generate three dimensional terrain information and high-resolution ortho-imagery and then analyse quantitatively damage degree by natural disaster using commercial UAVs and drone mapping technique. Finally, we evaluate the mapping accuracy and work efficiency of drone mapping for disaster investigation application through comparing with traditional investigation work process which was dependent on labour-intensive field survey. The resolution ortho-image map of within less 5cm of GSD generated by aerial photographs acquired from UAVs at the altitude of 100m~250m enabled us to check damage information such as facilities destroy or the trace of soil erosion around the river flooded and reservoir collapsed area. In addition, three dimensional point cloud data of landslide-damaged areas enabled us to more accurately measure the width and the depth of outflows caused by landslides, soil runoff distance, and landslide damage area. The photogrammetry-based drone mapping technology for the disaster damage investigation is expected to be an alternative approach to support or replace the labour-intensive disaster site survey that needs to investigate the disaster site quickly and timely.

As natural disaster occurs, the local and the central government should investigate the damaged fields promptly, analyze quantitatively the degree of damage, and establish an appropriate disaster recovery plan in accordance with Framework Act on the Management of Disasters and Safety in Korea. The purpose of this study is to assess the applicability of UAV photogrammetry for the management of natural disaster. First, we suggest small easy-to-use UAV-based investigation procedure for natural disaster damaged area in the phase of disaster recovery in Korea. Before drone-based aerial surveying, the field survey can be performed with DGPS RTK for GCPs setting-up around disaster site. In this paper, we generate three dimensional terrain information and high-resolution ortho-imagery and then analyse quantitatively damage degree by natural disaster using commercial UAVs and drone mapping technique. Finally, we evaluate the mapping accuracy and work efficiency of drone mapping for disaster investigation application through comparing with traditional investigation work process which was dependent on labour-intensive field survey. The resolution ortho-image map of within less 5cm of GSD generated by aerial photographs acquired from UAVs at the altitude of 100m~250m enabled us to check damage information such as facilities destroy or the trace of soil erosion around the river flooded and reservoir collapsed area. In addition, three dimensional point cloud data of landslide-damaged areas enabled us to more accurately measure the width and the depth of outflows caused by landslides, soil runoff distance, and landslide damage area. The photogrammetry-based drone mapping technology for the disaster damage investigation is expected to be an alternative approach to support or replace the labour-intensive disaster site survey that needs to investigate the disaster site quickly and timely.

With the drastic development of low-altitude UAV (Unmanned Aerial Vehicle) technology, UAV will be used for long-distance logistics in the near future. Many countries begin to develop UTM (UAV Traffic Management) system, and one of the objectives for the system is preparation of UAV-logistics era. In that era, hundreds of drone will simultaneously fly at one area. To prevent UAV collision in the air, UAV air road should be designed. The Korean government have supported research projects related with UAV air roads. This paper deals with development of UAV air roads by using 3D grid system. First, detail 3D spatial information for UAV air roads is constructed. In many cases, 3D digital map does not include transmission towers, utility poles, power lines, or trees, since the interests of 3D digital map are focussed on digital elevation model and digital surface model with buildings. The transmission towers, utility poles, and power lines could be obstacles when UAV perform its logistics mission. Therefore, detail 3D information should be constructed for UAV air roads. We constructed such detail 3D information by using MMS (Mobile Mapping System) and aerial survey with Lidar and digital photograph. Next, 3D grid system is proposed to present such detail 3D information. Usual object based 3D information is huge size and hard to control. To provide 3D information to a flying UAV, data should be light. Therefore, light-weight 3D grid system is effective to provide air road information to UAV. Proposed 3D grid based air roads can be used for UAV flight plan, traffic management etc.

With the drastic development of low-altitude UAV (Unmanned Aerial Vehicle) technology, UAV will be used for long-distance logistics in the near future. Many countries begin to develop UTM (UAV Traffic Management) system, and one of the objectives for the system is preparation of UAV-logistics era. In that era, hundreds of drone will simultaneously fly at one area. To prevent UAV collision in the air, UAV air road should be designed. The Korean government have supported research projects related with UAV air roads. This paper deals with development of UAV air roads by using 3D grid system. First, detail 3D spatial information for UAV air roads is constructed. In many cases, 3D digital map does not include transmission towers, utility poles, power lines, or trees, since the interests of 3D digital map are focussed on digital elevation model and digital surface model with buildings. The transmission towers, utility poles, and power lines could be obstacles when UAV perform its logistics mission. Therefore, detail 3D information should be constructed for UAV air roads. We constructed such detail 3D information by using MMS (Mobile Mapping System) and aerial survey with Lidar and digital photograph. Next, 3D grid system is proposed to present such detail 3D information. Usual object based 3D information is huge size and hard to control. To provide 3D information to a flying UAV, data should be light. Therefore, light-weight 3D grid system is effective to provide air road information to UAV. Proposed 3D grid based air roads can be used for UAV flight plan, traffic management etc.