提出一种结合小波变换与共现矩阵用于纺织品图像缺陷检测的方法。首先将灰度图像分解成子带;然后将纹理图像分割成互不重叠的子窗口,提取共现特征;最后用无缺陷样品训练的Mahalanobis分类器将每一子窗口划分为缺陷的和无缺陷的。应用该算法进行实际工厂环境中的纺织品缺陷检测。实验结果表明,集中处理具有强判决能力的某一频带提高了检测性能,也改善了计算效率。
The paper put forward a defect-detecting method on texture image accomplished by the combination of wavelet transformation and co-occurrence matrix. First divided the gray image into sub-bands, then segmented texture image into subwindows without mutual superposition, abstracted whose co-occurring features, finally, labeled each sub-window with "faulty" or "flawless" by Mahalanobis classifier having undergone flawless sample training. The method of calculation has been applied to the daily practice of textile' s defect-detecting in factories, the outcome indicating that the calculation efficiency, as well as detecting capability can be intensified by a certain band of frequency with high discrimination scale.