Hough 变换用于提取试件边缘参数的研究

Study on Hough Transform Testing Sample Edge Extraction

提出了一种采用二次迭代量化的灰度Ｈｏｕｇｈ变换提取试件边缘参数的新方法。它首先在整个参数空间内进行低精度的量化和第一次Ｈｏｕｇｈ变换以提取边缘的初检参数，然后在以初检参数为中心的一个空间邻域内进行高精度的量化和第二次Ｈｏｕｇｈ变换以提取边缘的精度参数。它有效地克服了常规Ｈｏｕｇｈ变换所存在的缺点。实验结果证明该方法具有抗干扰能力强、检测精度高、实时性好等优点。

A new method of testing sample edge extraction used two level parameters quantified Hough transform is proposed in this paper.First,it makes a low resolution quantization of the entire parameter space and the first Hough transform for the coarse testing sample edge extraction.It then makes a high resolution quantization of the part parameter space in the center of the coarse sample edge parameter and the second Hough transform for the fine sample edge extraction. It overcomes the general Hough transforms disadvantages effectively.The testing results show the advantages of this method in anti interference,accurate and real time.