机助面积量测与传统方法的比较

传统的地图面积量算的仪器和方法很多，其中大部分速度慢、精度低、劳动强度大。目前，在地理信息系统支持下利用计算机量测面积，是一种快速、有效的方法。该文重点介绍在地理信息系统支持下利用计算机量测面积的技术和方法，并从传统方法中选出两种普遍采用的膜片法和求积仪法，通过三种方法的速度、精度、设备投资以及劳动强度的比较，得出机助面积量测法最优，求积仪法次之，模片法较差。

COMPARING STUDY OF SEVERAL AERA MEASURING METHODS

There are many instruments and methods of measuring the areas of maps, but most of them with lower speed, lower accuracy and more labour. Based on GIS, the measuring way with computer is an effective one which being with satisfied speed, accuracy and labour intensity besides higher cost comparing with traditional film and planimeter methods. The tecnique of measuring maps based on GIS has been discussed mainly in this paper.