采用计算机图象处理系统确定材料截面矩

Computation of Movement of Irregular Cross Section with Computer Vision System

提出了一种用计算机图象处理系统由面积边界来确定材料截面矩的方法。首先用计算机图象处理系统将材料截面图形数字化，并采用链码方法和精确边界寻迹方法确定图形边界。然后用格林公式将此图形面积的面积分转换为沿面积边界的线积分求解截面矩。

In this paper a method is proposed of computing moments from the boundary of a material cross area by using computer vision system. Green,s theo-rem is applied to convert the integration across a region to the integration along the region boundary。The boundary of the area of interest is located by using chain code method and precise boundary tracking method with a computer vision system. The method is efficient in the moment computation for the irregular area whose boundary can not be defined mathematically.