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A new method is proposed in this paper to determine the cloud vertical structure using water vapor pressure estimated from radiosonde profile. The presence of a cloud depends on the following criteria: the measured water vapor pressure being larger than the critical water vapor pressure at the same level. The estimated results of cloud vertical structures using the proposed method are compared with...
This paper addresses an adaptive coregistration method of synthetic aperture radar interferometry (InSAR) phase images. The method for adaptive coregistration of InSAR images is characterized by using multisource information and joint data fusion. We propose a strategy and criteria incorporating the weighted joint data information to evaluate the accuracy of the registered method by the using the...
The key techniques and methods to design and realize the virtual endoscopic surgery training system were discussed. In accordance with the functional requirement, the virtual endoscopic surgery training system was built using hierarchical system structure, with the 3-dimensional model of human organ, soft tissue deformation and cutting algorithm, and also with the function of virtual scene editing...
In the environment of data integration over the Internet, the remote serverpsilas contention states take direct effect on the cost of a data query. So to determine the server contention states plays an import role to estimate the cost of query. This paper uses sample queries and k-means algorithm to determine the remote serverpsilas contention states, and get the response cost of the server, then...
Derived from the thought of data warehouse and data cube, this paper presents a new database structure model which organizes the multimedia data in a multi-dimensional data cube. Clustered data are stored in instance table in the data cube. A corresponding leading data are stored in dimension table. When querying, a leading data is gained from dimension table firstly, followed by a k-nearest neighbor...
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