羊绒与羊毛直径的水平集中轴线法测量

摘要

As the existing methods of calculating the axis is inaccurate, a new level set of central axis method of cashmere and wool diameter was proposed. Firstly, the fiber image obtained by optical microscope were processed including pretreatment, region growth segmentation and thinning algorithm. Smooth, continuous and single pixel distribution central axis was attained using central axis method based on the previous processing. Diameters of 100 samples randomly selected from 6 batches of cashmere were measured using this new method and their mean was compared with the real value. Results show that the average error of cashmere fiber diameter is 0. 29μm, and the mean square error is 0. 05;and the average error of wool fiber diameter is 0. 37 μm, and the mean square error is 0. 06. The similarity between diameters of cashmere and wool and the real values proves the accuracy of this method. In addition, the better robustness of this method is proved by the result of mean square.%针对中轴线法测量求取不准确的问题,提出了一种新的水平集中轴线法的羊绒与羊毛直径测量方法.首先对由光学显微镜得到的纤维图像进行处理,包括预处理、区域生长分割和细化,在此基础上采用水平集中轴线法获得光滑、连续、单像素分布的中轴线.并随机抽取100根6个批次的山羊绒、绵羊毛纤维,利用该测量方法对其直径进行测量,计算其平均值,并与真实值进行比较.结果表明,羊绒直径的平均误差为0.29μm,均方差为0.05,羊毛直径的平均误差为0.37μm,均方差为0.06.用本文方法测得的羊绒与羊毛直径值与真实直径值极为接近,说明该方法比较准确,且由均方差可知,该算法的鲁棒性也较好.