Pancheng Wang

Learn More
Web Map Service (WMS) provide spatial information to Internet users by map images. Commonly, spatial data are stored as vector data. It is a long time job to create map images from vector data. To reduce the time cost, we employ Linux cluster. When a map is requested, coordinates scope that is a rectangle defined with xmin, ymin, xmax, ymax must be(More)
In this paper, a B/S structured WebGIS-based information system of Yang Zhou city is designed and developed by integrating various data sources including aerial photos, video clips, digital pictures etc. Special focus is cast on hierarchical data structure, image pyramid, image compression and online dissemination technology in order to efficiently process(More)
  • 1