双峰型基础电子地图载负量变化规律的探究

Exploration of Two-peak Changing Law of Basic Electronic Map Load

电子地图载负量是影响电子地图多尺度显示清晰性、平滑性和层次性的重要因素,也是多尺度显示模型建立的重要指标,因此,对电子地图载负量的研究具有重要意义。本文采用基于RGB值的方法获取了大量的基础电子地图载负量数据,发现基础电子地图载负量在全尺度范围内呈现出"双峰"型的变化规律,并利用眼动仪进行了地图感知试验和验证,最后,对"双峰"型电子地图载负量变化曲线形成的因素进行深入分析,指出该结论对于电子地图多尺度显示方案的制定有着指导意义和实际应用价值。

Electronic map load is one of the most important factors that influence the clarity,smooth and gradation of the multi-scale display;and it is also an important indicator in multi-scale representation modeling.All of these make the research of electronic map load significant.This article obtains a large number of basic electronic map data by the way of RGB values-based approach and finds that the basic electronic map load showing a two-peak changing law in full-scale range.Then,map perception tests are operated by eye tracker.In the end,this paper analyzes the form factors of two-peak changing curve and points out that this conclusion has a greater significance and practical value for the development of electronic map multi-scale display scheme.