The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Currently, the integration of two-dimensional electronic map and three-dimensional virtual scene is a hot spot. Firstly, the article elaborates the characteristics of the integration of VRML-based three-dimensional virtual scene and two-dimensional digital map, then deeply investigates the technology of the integration system of VRML-based three-dimensional virtual scene and two-dimensional digital...
The paper proposes a novel method for automatic linear features extraction from raw LiDAR point clouds. Our method bases on the fact that facades of a building in urban area can reflect laser pulses since most of time the scanning angle of the laser scanner does not equal to zero degree. Experimental results show that our algorithm can extract linear features in urban area automatically with high...
Taking the case of Shenyang Agriculture University, based on the 3D scene creation process as the reference, this essay elaborates the process and methods of the creation of 3D virtual scene and 3D roaming system in such three aspects as data collection, methods of 3D scene creation, and scene integration. The innovation of this essay is the modeling optimization running through the entire modeling...
Virtual reality technology has become a main research field of computer development application gradually in recent years. Virtual campus is a specific application of virtual reality technology in the digital campus. The basic principles and key technologies of building virtual campus model are studied in this paper. According to the requirements of virtual reality, virtual campus 3D models are established,...
Facing the monitoring demand to the progress of key project using remote sensing technology, the Beijing-Tianjin inter-city railway project (Beijing South Railway Station) was taken for example and the high resolution remote sensing image of 2005 (before project) and 2007 (in project) were used as data source. At first, we built land-use classification index system. Then land-use information of South...
Real estate industry plays an important role in economy development of Tianjin. It is practically significant for Tianjin to get the rule of real estate development and analyze its fluctuation. In this paper, we first collected the relevant data of Tianjin real estate, and then adopted single index, complex index and diffused index to analyze the fluctuation of Tianjin real estate industry in recent...
According to the characteristics and the real situation of military equipment maintenance support, the paper analyzes the basic manner and contradiction of forming quality culture of equipment 6σ maintenance. And defines three major factors of forming quality culture as the attention and participation of commander, carrying out managing law, and building and improving the mechanism of rewards and...
Group decision-making is an increasingly vital concern for organizations. It is a very important topic that how to improve effectiveness of group decision-making, and this topic will become a magnetic field of researchers and practitioners gradually. This paper provided several approaches for improving the level and effectiveness of group decision-making, and these approaches may produce some reference...
This study aims at revealing how land use and land cover change in the typical watershed (Luoyugou Watershed) of Loess Plateau over past 20 years. Based on the remote sensing imagery data and topographic map, a four-stage (1986, 1995, 2001 and 2008) spatial data base was established with ArcGIS software. Demographic data, agricultural economic data and other auxiliary data were collected from national...
The changing rules of the landscape elements and their distribution in Shendong coal mining area are analyzed by means of remote sensing images obtained in 2002, 2006, 2009. using support vector machine classification method, it can be classified into six land-use types: water bodies, grassland, shrub land, construction land, desert and Saline soil, bare rock and unused land. The following results...
The rail transit projects have played a very important role in the urban transport and it's construction safety are concerned more and more. Subway construction monitoring can directly reflect the impact for the surrounding environment and buildings which from the subway construction and has great significance for construction safety of subway projects. This paper focuses on the new methods and techniques...
With the increasing of mining depth, the surface and underground geological conditions have undergone great changes. The updating investigations mostly depend on the conventional means which has constrained the mine production on in-depth understanding of the geological terrain. So it is urgent to carry out the research work. The use of remote sensing techniques and auxiliary data to carry out the...
The paper based on digital city management platform, built emergency evacuation management model. First, gave the framework of digital city management platform, and then, describes the main steps of the design of digital city management platform, final, gave the emergency evacuation model based on Digital City management platform. The model based on knowledge base of emergency contingency plans, for...
This paper studies a man-made target extraction technique using SVM (Support Vector Machine) method from high resolution PolInSAR(polarimetric Interferometric synthetic aperture radar ) data. Fully polarimetric interferometric data in X band was acquired by a China-made airborne SAR system in January 2010, over the Linshui area in Hainan province. This study focuses on man-made targets extraction...
This report is carried out on the basic analysis data of the Wuhan TM thermal infrared data, and the results were qualitatively analyzed. With the bands of 1998 and 2005, the basic factors affecting the thermal field, namely buildings, greenbelts and water bodies, were identified by modeling the feature extraction. On the basis of that, the data was analyzed for the features of the underlying changing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.