基于角点分段算法的岩石裂隙宽度测量及分析*

利用数字图像方法测量岩石节理裂隙宽度（开启度），需要对岩石裂隙进行分段。由于节理裂隙的信息主要反映在其特征点（角点）中，故提出了一种角点分段算法。利用此算法对岩石裂隙分段，再利用改进的Ferret——最佳拟合长方形算法测量宽度，通过对所得结果进行分析可知，利用角点分段算法和最佳拟合长方形算法相结合测量岩石裂隙宽度，与其他测量方法相比不仅实现了计算机的自动测量，而且测量的精确度更高。

Rock Fracture Width Measurement Method Based on Corner Segment Algorithm

To measure the width of rock fracture aperture using digital image processing technique,it needs to divide the fracture into a number of segments first.Since information of rock fracture aperture is concentrated at the corners,the paper pre-sents a corner segment algorithm.Divide segments by corner segment algorithm and measure the width of fracture aperture by best-fit rectangle algorithm.It draws the conclusion by analyzing the result: combining corner segment algorithm with best-fit rectangle algorithm is one of the best methods for measuring rock fracture aperture measurement.The method not only achieves automatic measurement by computer,but also improves the accuracy of aperture measurement comparing to other algorithms.