光平面剖切法及其在透视图消隐中应用

Radial-plane cutting algorithm and its application to hidden-line removal for perspective drawing

研究利用近景摄影测量成果绘制建筑物透视图的消隐问题 ,提出了光平面剖切的消隐方法 ,建立了消隐的数学模型 ;通过数学计算与判断 ,确定了空间点与面的隐藏关系 ,将复杂的空间问题转化为平面问题来解决 ;用 C语言实现了该算法 ,给出了应用实例 .实践证明该方法理论正确、方便实用 。

This paper deals with the radial plane cutting method to resolve the hidden line removal problems for perspective drawing of building. The radial plane cutting algorithm is the research result of the close range photogrammetry The mathematical model for hidden line removal is established.A hidden line relationship between the space point and the plane is determined by mathematical calculation and the judge. It is solved to transfer the complex space problem into the plane problem.It has been implemented in C language.The practical example is given.It is proved that the method is correct and simple. It is a new way of removing hidden line.