摘要
手机隔板在生产过程中经常出现划痕、砂粒残留、污渍等外观质量问题,从而影响手机装配及整体质量。利用砂粒呈现为圆点状局部峰值区域,具有全向对称结构特性以及灰度高斯分布特性,提出一种新颖的旋转线性扫描算子实现残留砂粒的特征分析和检测,实验表明该方法优于传统的顶帽变换、高斯模板匹配和双环滤波方法,具有对比度变化鲁棒性,误检和漏检率低,具有良好的适应性和实用性。
In the production process of mobile phone,scratches,sand residues,stains and other quality problems often appear on the partition of the mobile phone,which affect the assembly of mobile phone and the final product quality.Sand residues appear as round local peak regions,and have omnidirectional symmetric structure characteristic and gray scale Gaussian distribution characteristics.According to these observations,a novel rotating line scan operator is proposed to achieve the feature analysis and detection of the sand residue.Experiments show that the proposed method is superior to traditional top-hat transformation,Gauss template matching and double ring filtering methods.The method is robust to contrast variation,has low false negative rate and false positive rate and presents good adaptability and practicability.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2014年第3期642-649,共8页
Chinese Journal of Scientific Instrument
基金
湖南省科技厅计划(2012FJ3113)
湖南省教育厅青年项目(10B109)
湖南省重点学科资助项目
关键词
线扫描分析
手机隔板
残留砂粒
line scan analysis
mobile phone partition
sand residue
