薄型层叠钢板的Hough 空间计数

为了进一步提高现有工业层叠薄型钢板计数方法的精准性和效率，研究基于面阵CCD 图像检测的薄型钢板计数方法。基于CLAHE(Contrast Limited Adaptive Histogram Equalization)原理、二维均值滤波及形态学膨胀腐蚀优化原理，提出了粗背景分离并修正阈值的自适应OTSU 分割算法。针对传统Hough 变换的参数空间峰值点漏检或误检等不足，提出了基于自相关特征分割的参数空间波峰提取算法。实验表明，本文测数方法对0.5 mm 以上规格的层叠钢板堆垛统计准确，实时性强，鲁棒性好。

Abstract

In order to improve the accuracy and efficiency of existing industrial laminated thin steel-plates counting method, a thin steel-plates counting method based on Array CCD image detection was studied. An OTSU improved algorithm within rough background separation and self-adaptive segmenting threshold corrected was proposed, which was based on CLAHE (Contrast Limited Adaptive Histogram Equalization) principle, dimensional mean-filtering and morphology optimization principle of expansion and corrosion. Due to the shortcomings on missing or error peaks detecting in parameter space of traditional Hough transform, an algorithm based on auto-correlation principle and feature segmentation was proposed. Experimental results demonstrate that the proposed counting method for stacked thin steel-plates of specification 0.5 mm above is real-time, and has high statistical accuracy and good robustness.

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谭旺, 王英, 陈培锋, 夏灵林. 薄型层叠钢板的Hough 空间计数[J]. 光电工程, 2015, 42(11): 25. TAN Wang, WANG Ying, CHEN Peifeng, XIA Linglin. Hough Spatial Counting Method of Thin Laminated Steel-plates[J]. Opto-Electronic Engineering, 2015, 42(11): 25.

薄型层叠钢板的Hough 空间计数

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