简介:摘要:本文提出一种新型的去噪算 法,进行了混合噪声去噪实验。用均方误差作为去噪效果的衡量标准,对几种 滤波方式进行了对比,结果表明本文算法对混合噪声的去噪效果要优于其他三 种。电缆缺陷图像分割阶段先通过三种微分算子进行了边缘检测分割,结果表 明此种分割方式的结果无法满足后续的特征提取标准。通过分析缺陷的灰度直 方图,发现缺陷部分与背景间存在显著灰度差异,转而使用三种阈值分割技术 进行实验,结果表明迭代式阈值分割可以有效地将三种缺陷分割出来。然后通 过形态学滤波去除图像中细小的干扰项,使电缆缺陷图像达到了缺陷特征提取 的标准。基于轮廓跟踪法对电缆缺陷进行轮廓追踪,并通过扫描连通域完成缺陷区 域的标记,提取出了缺陷的面积和周长特征。
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