Kexiong Chen

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Image segment is one of the most fundamental and difficult problems in image analysis and computer vision. The image thresholding problem is treated as an important issue in image processing, and it can not only reduce the image data, but also lay a good foundation for succedent target recognition and image understanding. Character of global thresholding(More)
Since remote sensing data increases rapidly in recent years, the management of mass remote sensing data has become more complex. This paper adopts the way of Mercator Projection Pyramid QuadTree Hierarchical Subdivision (MPPQTHS) to manage image data, stores image data in relational database, and develops a prototype verification web publishing system based(More)
There are comment information blocks on the edge of each aerial film, which recorded significant aerial imaging parameters. After the film digitization, we can get the value of imaging parameters by identifying and extracting the characters from comment information block automatically. The geometric rectification of the digital aerial film image based on(More)
Since remote sensing data increases rapidly in recent years, the storage and management of mass remote sensing data has become more complex. This paper adopts the way of Plate Carree Projection Grid Hierarchical Subdivision (PCPGHS) to manage image data, stores image data based on extensible object-oriented relational database, and develops a prototype(More)
A Grid service is an extended Web service that conforms to the Open Grid Service Infrastructure (OGSI) specification. The capability that existing Web service technology express is relatively weak. The publishing and discovery of Grid resource are crucial steps in Grid computing. In this paper, we propose a novel semantics based Grid Service framework which(More)
An autonomous mobile metal detector is designed, which can move on the ground actively. The system implements the function of data acquisition and signal conversion by LDC1000 module. High performance controller TM4C123BH6PGEI is served as the control core and a smart car is used to realize independent mobile function. The results empirically show that the(More)
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