Progressive Network Transmission Method Research of Vector Data
Vector data contains a lot of important features. Progressive transmission is a key technology to solve the real-time rendering and network transmission of vector data. By studying the traditional progressive transmission method of vector data and considering the spatial position and geometric features of vector data, we proposed an efficient progressive transmission method. We divided the vector data into blocks based on spatial location, then applied a Visvalingam-Whyatt algorithm to build a multi-scale model. Finally the progressive transmission of vector data was achieved. Our method satisfies the viewer’s needs to display data from different rendering scale and has important significance for client users to interact in real time.
KeywordsVector data Visvalingam-Whyatt Progressive transmission
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