The Principles of the techniques about shadedrelief and synthetic stereo-pair viewing of images as well as their application in digital elevation model data processing are described.
说明了实现人工阴影和人工立体观察像对的方法的基本原理及其在处理数字高程模型数据上的应用；
3
Being out of view was physical relief, like being shaded from a desert sun.