图象处理技术在散光光弹性实验力学中的应用

本文介绍了对散光光弹性图片经过平滑、双值化、中值滤波和抽取条纹中心线算法等步骤后抽取其骨架,从而采集应力计算所必须的数据。该算法具有相当的通用性和可靠性,对其它具有严重纹斑噪音和低对比度图片的处理,都取得了满意的结果。

Application of Image Processing Techniques in Experimental Mechanics of Scattered Photoelasticity

In this paper, the method for extracting the fringe skeletons of scattered patterns is introduced. The algorithm involves smoothing, binarization of fringe patterns, two dimensional median filtering, and the extraction of the central lines of the fringe skeletons. the basic data for the calculation of stresses are acquired from the extracted skeletons. The algorithm possesses universal characteristics and good reliability. It performs satisfactorily even with noisy fringe patterns, such as speckle interference fringes and low contrast images.