网络信息发布逐渐由文本发布向图形、图像化及其混合形式发展。为提高信息发布效率,提出了一种基于SVG(Scalab le VectorG raph ic)的网络信息实时发布模式。在这种模式下,不仅节省网络传输带宽,减少传输延迟时间,而且图像能够根据数据...网络信息发布逐渐由文本发布向图形、图像化及其混合形式发展。为提高信息发布效率,提出了一种基于SVG(Scalab le VectorG raph ic)的网络信息实时发布模式。在这种模式下,不仅节省网络传输带宽,减少传输延迟时间,而且图像能够根据数据库中数据的变化,发生相应的变化,实现了实时图像发布。不仅提高了信息发布的效率,而且扩大了信息发布的应用范围。展开更多
Aiming at the special demand on SVG_based representation and organization for spatial data in location based services（LBS）, the research is made in this article on the conversion method from multiple formats to SVG ...Aiming at the special demand on SVG_based representation and organization for spatial data in location based services（LBS）, the research is made in this article on the conversion method from multiple formats to SVG format, and a harris_corner detector method is proposed and verified to evaluate the conversion result. Based on the above, an optimized compression arithmetic is proposed, which integrated the characteristic of code simplification and GZIP compression. The test shows that the techniques on conversion and compression are feasible, which means that SVG_based representation is suited for spatial data in LBS and the improved compression arithmetic is prior to the former.展开更多
文摘网络信息发布逐渐由文本发布向图形、图像化及其混合形式发展。为提高信息发布效率,提出了一种基于SVG(Scalab le VectorG raph ic)的网络信息实时发布模式。在这种模式下,不仅节省网络传输带宽,减少传输延迟时间,而且图像能够根据数据库中数据的变化,发生相应的变化,实现了实时图像发布。不仅提高了信息发布的效率,而且扩大了信息发布的应用范围。
基金jointly supported by the National Natural Science Foundation of China (No. 41371375)the Natural Science Foundation of Beijing (No. 8102018)the National Science and Technology Support Program (Nos. 2012BAH33B03 and 2012BAH33B05)
文摘Aiming at the special demand on SVG_based representation and organization for spatial data in location based services（LBS）, the research is made in this article on the conversion method from multiple formats to SVG format, and a harris_corner detector method is proposed and verified to evaluate the conversion result. Based on the above, an optimized compression arithmetic is proposed, which integrated the characteristic of code simplification and GZIP compression. The test shows that the techniques on conversion and compression are feasible, which means that SVG_based representation is suited for spatial data in LBS and the improved compression arithmetic is prior to the former.
