计算机科学 ›› 2020, Vol. 47 ›› Issue (5): 154-160.doi: 10.11896/jsjkx.190200295
曹义亲, 段也钰, 武丹
CAO Yi-qin, DUAN Ye-yu, WU Dan
摘要: 针对二维最大类间方差阈值法(2D-Otsu)抗噪性较弱、计算时间较长的问题,文中提出了一种基于随机权重及异步价值因子取值的人群搜索算法,并将其应用于2D-Otsu中对钢轨缺陷图像进行分割。该算法采用随机权重加快收敛速度,采用异步价值因子提高搜索能力,有利于全局收敛到最优值。根据测试函数分析,WFSOA算法能够快速收敛,寻优值结果精度高,收敛时间短,算法稳定性好。在钢轨缺陷图像分割中,将2D-Otsu的迹函数作为WFSOA的目标函数,实验结果表明图像检测实时性高,对表面灰度不匀或生锈的钢轨缺陷分割结果清晰,有效降低了钢轨缺陷误检率和漏检率,在计算时间上仅占2D-Otsu算法的2%,可满足实际工程对实时性的需求。
中图分类号:
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