关键词: 超限货物轮廓, 对象, 几何运算, 纵横交替扫描, 内外边

Abstract: Calculating out-of-gauge goods outline accurately ensures transportation safety and raises transporting efficiency, which is a piece of indispensable and fundamental work in daily transportation management. By leading object oriented thinking, this paper advances a method for calculating out-of-gauge goods outline, which focuses on object description, projection and integration. Out-of-gauge goods are deemed as objects and objects are depicted through decomposition of primitive units and geometry calculations. These objects are projected and the projections are pre-processed through vertical and lateral scanning in order to portray objects’ morphology about comprehensive gauge. On the basis of leading intersection point sequence, internal and external borders, this paper designs an algorithm for integrating objects, which is based on calculation of intersection points and judgment of borders’ attribute. The method for calculating out-of-gauge goods outline fits facts, avoids omission of secret control points effectively and reflects spatial pattern of goods well. The example has confirmed the method’s validity.

Key words: out-of-gauge goods outline, object, geometry calculation, vertical and lateral scanning, internal or external border