路网表达目标选取的内插方法研究

针对任意未知比例尺下路网表达目标派生时的目标选取问题,集成现有方法并进行拓展,提出体现多尺度表达目标间关联信息的传递和继承特性、顾及路网多尺度表达属性影响的目标“内插”方法。阐述内插法选取路网表达目标的基本思想和技术路线,定义内插法的综合权重函数,设计并实现内插法派生路网目标的试验方案和技术流程。试验表明该法既继承较小比例尺下的表达目标,又客观评估各种因素对路网目标选取的影响程度,保证派生目标的客观选取。

Interpolation Method of the Road Object Selection

Aimed at the problems of road object selection at any unknown scale,the existing methods of object selection are integrated and extended in the paper,and a new object interpolation method is proposed,which reflects the inheritable and transferable characterization of related information among multi-scale representation objects,as well as takes the attribute effects into account.Then the interpolation basic idea and overall framework and technical flow are put forward,and then the synthetical weight function of the interpolation method is defined and described.The method and technical strategies of object selection are extended,and the key problems are solved,including the objective quantitative and structural selections based on the weight values,the interpolation experiment strategies and technical flows are designed.As a result of the test,it shows that the object interpolation method not only inherits the objects at the smaller scale,but also takes the attribute effect into account when deriving object from the larger scale according to the road importance,which is a guarantee to objective selection of the road objects at middle scale.