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Under traditional way, collecting, acquiring and processing information of cotton pests and diseases are mainly completed manually, there for it lacks efficiency and counting and analysis are relatively difficult. According to the XPCC (Xinjiang Production and Construction Corps) cotton's characteristic, this paper proposes a cotton pest and disease collection system based on mobile terminal, combined...
Geographical data is of great value for data producers. How to protect copyright of geographical data effectively using digital watermarking is a hot research issue. In this paper, spatial topological relation existing between polygons is chosen as cover data, and watermark is embedded by slightly modifying the metric measure of spatial topological relation, and some geographical objects are scaled...
Taking spatial information technology application in Xinjiang Production and Construction Corps (XPCC) as background, and considering special management features of XPCC, we propose a spatial information management and service model based on Web services and SOA architecture. We design the architecture and logical structure of XPCC-oriented distributed spatial information management and service platform,...
Most of the existing vector maps watermarking algorithms exploit spatial precision to measure the fidelity of the watermarked data. In fact, spatial precision fails to measure the shape distortion of the watermarked objects. In this paper, a shape-preserving and robust watermarking algorithm is proposed. We identify each polygon using highest significant bit of coordinates of its feature center. We...
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