摘要
地形数据图像处理系统作为地学空间数据分析模型研究的一个组成部分,具有广泛的应用前景。本文论述了该系统的设计原理,介绍了地形曲面数字模型及其逼近计算的公式和误差分析,并给出了地形曲面灰度计算和动态表现的设计思想及其变换技术。以这些原理和技术为基础,系统将不难在配备有图像显示装置的计算机系统上实现。
As a part of the research about the analytical model of geoscientific space data, the image processing system using topographic data has vast applied aspect. This paper describes the designing principle of the system, and introduces the mathematical model for the terrain surface along with approximate calculation formula and error analysis. It also give the designing thought of kinetic representation and the transform technique about the terrain surface as well as calculation formula of the gray level. Based on these principles and techniques, this system will be realized easily in the computers provided the image display processor.
