ZHU Haijun, WU Huayi, LI Deren. DCT-Based GIS Vector Data Compression[J]. Geomatics and Information Science of Wuhan University, 2007, 32(12): 1123-1126.
Citation: ZHU Haijun, WU Huayi, LI Deren. DCT-Based GIS Vector Data Compression[J]. Geomatics and Information Science of Wuhan University, 2007, 32(12): 1123-1126.
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DCT-Based GIS Vector Data Compression

    Abstract
  • A technical framework of DCT-based GIS vector data compression is proposed.DCT is applied to transform vector data into combination of cosine curves,while in this combination coefficients are quantified to integers before lossless coding to compressed bit-stream.Experimental results show that this compression framework works well for naturally formed linear vector data with very high compression ratio while its distortion is well controlled by predefined thresholds.
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