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Facing the drawback existing in the stand-alone image processing software, the article proposes a Web-based online image processing software architecture, and make use of the advanced image processing technology of Java Applet and JAI to achieve. Detailed introducing and analysis the programming development method of JAI advanced image processing technology and Applet plug-in implementation process...
Mutual information based matching-suitable features are studied in this paper, for the selection of good matching areas with high success probability in SAR matching aided navigation system. Based on the analysis of SAR imaging and multi-source matching, four feature constructing guide lines are proposed first. Then ten candidate features are designed under mutual information measurement. Effectiveness...
In practice, the determination of the number of endmembers for hyperspectral images of the areas without priori knowledge is highly difficult. This article brings forward an automatic method, which can estimate the number of endmembers for hyperspectral imagery without priori knowledge of the area, according to the theory of orthogonal subspace projection (OSP). The paper carries out the experiments...
The CASS technique was adopted for researching on the treatment of Domestic Sewage. The results showed that, in the stable operation phase of the test and under the conditions of setting operation parameters, the average removal rates of CODcr, BOD5, NH4-N, and TP were respectively 91.7%, 92.2%, 89.5% and 91.09%. The sludge remains highly active, and it had stable bio-facies. Effluent quality met...
The sustainable development of tourism needs the support of GIS (geographic information system) technology. The aim of this paper is to provide the basis for the Chinese tourism by summarizing the application of GIS technology. In Chinese tourism, GIS mainly applies in the following several aspects: investigation of tourism resources and the development of tourism products; tourism landscape planning...
More and more high-rise buildings had been constructed in Shanghai. Structure seismic design is becoming more and more difficult because of the increasing of structure height and structure style complexity. In order to promote seismic design of high-rise buildings, share the experience and design data, it is necessary to build an information system. In this paper, GIS technology is applied to the...
With the groundwater resources management in Poyang Lake catchment as an example, groundwater resources management system based on geographic information system (GIS)-MapInfo software was development using Matlab software, and visual basic language in this paper, and the main functions were also introduced. The user interface was developed using visual basic language, which can provide the running...
The paper bases on the idea of parametric modeling, used object-oriented technology, combined the parametric design and knowledge engineer system, to develop arch dam visual modeling system. System bases on CATIA V5 platform, to VB as a secondary development tools, utilizes database technology to support data exchange between the module and processing. Users through an interactive design parameters...
Using EOS-Terra/MODIS in 2005-2007 to retrieve aerosol optical depth, spatial and temporal variations of aerosol optical depth in Chongqing was studied. The results show that the monthly distribution is characterized by double peak and double valley. The peak values appear in April, secondary peak in September, the minimum value in November and the other valley value in August. Seasonal change of...
The seamless integration and fusion of current multisource and heterogeneous spatial data in the open and distributed environments is still a crucial task and has strong application requirements. Nowadays, heterogeneous data resource in different region can be shared but cannot be used through a uniform way. This paper adopts a novel and converse cognize process on real world, and puts forward an...
Ecological restoration has been coming to be an important task in China, especially in resource-exhausted areas. Landscape restoration regionalization is a necessary part of it. This paper discussed the aim and meaning of landscape restoration regionalization firstly, ascertained the process for it. Then taking the abandoned mining areas of Mentougou District (MTG) of Beijing as an example, the author...
Now, application of InSAR (interferometric synthetic aperture radar) to deformation monitoring has become a hotspot for monitoring deformation. The basic principles and data processing procedures of InSAR are introduced in this paper, at the same time, main progresses made in InSAR technology and its application to deformation monitoring are summarized. Through actual examples of application and research...
Relative carrying capacity of resources is a method for measuring sustainable development through carrying capacity. Case studies of eleven cities in Zhejiang (Hangzhou, Ningbo, Wenzhou, Jiaxing, Huzhou, Shaoxing, Jinhua, Quzhou, Zhoushan, Taizhou and Lishui) illustrated regional sustainable development approach. In this study, in order to provide insight into spatial analysis of region sustainable...
To manage coalmine maps and handle the safety production information, on the condition that the SCADA system has been completely built, the Coalmine Safety Information System for a southwest county in China is developed using Visual C++ 6.0 and Visual InterDev 6.0 based on MapGIS. To meet different requirement of different level users, the system adopts the mixed architecture with C/S and B/S. This...
Data fusion for multi-sources remotely sensed images is becoming a key-question in RS application. In this paper, two images differing in spatial resolution and spectral resolution are used in data fusion. The additive fusion technique based on IHS and wavelet transform is discussed, and an improved additive fusion technique is put forward. Firstly, the high frequency from high spatial resolution...
This paper looks into the features of SMS (short message service) relevant to building a remote monitoring system. Based on the analysis of SMS, a set of guidelines for customizing the user data protocol of short messages are presented. The paper brings forward a method for encapsulating a Modbus message into a short message. It also discusses user data protocol of ASCII-coded immediate alarm messages...
Taking Yiwu city for example, dividing the urban region into 4 spatial units that is northeast, northwest, southeast and southwest. Using multi-temporal satellite remote sensing Images and geography information system, the space clustering and historical shape for the city land use expanding from 1970 to 2004 were studied in this paper. The results indicated the spatial differentiation law and the...
In order to analyze the influence of the satellite jitter on the image quality of the remote sensing camera, the image motion introduced by the low frequency sine jitter was given. The influence of the image motion along the roll, pitch and yaw direction on the image quality was studied chiefly. Finally, the degradation of the image quality caused by the jitter was computed concretely according to...
On the basis of analyzing the conventional Canny algorithm, this paper advanced an adaptive edge-detection method based on the Canny operator. This method not only keeps the Cannypsilas good performance in good detection, good localization and only one response to a single edge, but also improves the capability of restraining the fake edge and the automaticity of edge-detection based on the Otsupsilas...
The paper proposed a new algorithm that combination of two-dimensional plane collision detection and dynamic octree. It has good effect on reducing calculation scale and complexity, and the collision detection efficiency has been greatly improved.
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