Donglai Jiao

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Map symbol is considered as language of map, the design and implement for map symbol in different GIS platform were different. Due to different mechanisms, the map symbol designed on GIS platform was hard to reuse in others. Custom symbols difficult to meet the requirements of a variety of GIS platforms. This paper studied the process of geo-visualization,(More)
This paper reports our research on utilizing discernibility matrix method of Rough Set (RS) theory to improve the OGC web services (OWSs) semantic search. Based on RS theory, we build a description vocabulary reduction model involving attributes and spatial relation for OWSs and implement knowledge reduction on Geographic Information Service (GISe)(More)
By analyzing the features of general digital image and calculating the deviation of epipolar line, a correlation coefficient matching algorithm is proposed. In this paper, we make a summery of the particularity of general digital stereo, analysis the deviation of the corresponding epipolar line, and provide a matching method under the epipolar line(More)
Geographic information system has been widely used in sensor device management. The sensor was abstracted into the map symbol and displayed on the map. while it is difficult to realize the real-time data visualization in the GIS visualization process, this paper studied the design method of the real-time dynamic map symbol, applying the communication(More)
In this study, the decision tree (DT) classification technique was used to detect the land use changes based on the spectral characteristics of the samples and the spatial patterns of the six land use classes for two landsat images for the Shalamulun river catchment of China acquired in 1987 and 2001. And post-classification change detection technique was(More)
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