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The use of unmanned aerial vehicles (UAVs) has the potential to significantly improve the situation awareness of emergency first responders working at urban disaster sites. Having the characteristics of being small, light-weight and quickly deployable, UAVs offer the ability to fly over an urban disaster and provide intelligence to Urban Search and Rescue (USAR) task force efforts before precious...
Due to power limitation of nodes in wireless sensor networks (WSNs), how to maximize network lifetime has become a critical issue for deployment of WSNs. Although several schemes have been proposed for 2D WSNs, few for 3D WSNs are known. In this paper, we present a scheme for maximizing network lifetime in 3D WSNs through balancing energy consumption, as an extension of the existing scheme for 2D...
Three-dimensional (3D) urban geological models (3DUGMS) are a very important support for urban planning, construction and management, for they can reduce the blindness in geological cognition and the huge risk in underground engineering design and construction with the representation of spatial structure and relationships of geological objects and phenomena. This paper firstly divides the data in...
With the rapid urban growth in China, there is an increasing requirement for the multi-element 3D urban geological information system (MUGIS), which can provide diverse and timely urban geological information for scientific and rational urban planning, safe urban construction and effective urban management. This paper firstly analyzes the significance, history and current status of urban geological...
Based on WCF technology study, the 3D geographic information services was realized, using the character of WCF of supporting various distributed technologies. The distributed 3D geographic information system which is applicable in different networks and applications was built.
Building knowledge for robots can be tedious, especially if focused on object class recognition in home environments where hundreds of everyday-objects - some with a huge intra class variability - can be found. Object recognition and especially object class recognition is a key capability in home-robotics. Achieving deployable results from state-of-the-art algorithms is not yet achievable when the...
The disposal, modeling and visualization of 3D data are very important in the construction of digital earth. Now, one can get fine 3D model with software such as 3DMax and so on. But the 3D system is only perfect in visualization without any function of spatial analysis. The predominant software of GIS, for example, ArcGIS, or IMAGIS, provides ideal function of spatial analysis. One also can establish...
This paper describes an algorithm for creating pseudo stereo image generation (2D-to-3D conversion) and its real-time hardware implementation. The proposed method is developed to fulfill the growing need for high quality generic 3D contents. The algorithm intends to approximate 3D structures of natural scenes and to generate visually pleasing stereo images. The depth data is generated with simple...
Many visually-guided robotic systems rely on stereo video data streams to obtain surface models of environmental structure. However stereo video-based 3D point clouds are noisier than those produced from laser-based scanners and are subject to areas of sparse point information corresponding to textureless or specular surfaces. This complicates the process of constructing polygonal meshes from these...
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