摘要
注塑制品边缘轮廓提取是实现注塑制品边缘缺陷检测的重要前提,主动轮廓模型为注塑制品边缘轮廓提取提供了思路.本文结合注塑制品特点,提出改进的主动轮廓模型方法.该方法充分利用先验知识,提出初始轮廓确定方法;综合参数主动轮廓模型与几何主动轮廓模型的思想,提出控制点搜索方法;针对传统参数主动轮廓模型不能实现曲线拓扑的问题,采用控制点与样条的形式表述制品轮廓,提出插值准则,噪声控制点抑制准则以及控制点压缩方法.实验结果证明,该方法能够快速,准确的实现对具有待检测制品位于图像的中心附近,且待检测制品的中心在制品内部的注塑制品边缘轮廓提取。
Edge extraction of injection molding product is the most important precondition of product defect detection. Active contour model offers a good way. The characteristics of injection molding product are studied and an improved method is proposed for its edge extraction. Priori knowledge is used to obtain initial contour. Parametric snakes and geometric snakes are integrated to search snaxels. Both snaxels and spline are used to formulate final contour. Interpolation standard, noise snaxel eliminating and snaxel compression are proposed. Experiment results show that this method is efficient in object edge extraction for the object that is located around the center of the image and whose center is in the inner of the object.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2009年第7期1410-1415,共6页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(60774068)
973计划子课题(2002CB312201)资助项目
关键词
注塑制品
主动轮廓模型
边缘提取
初始轮廓
控制点
injection molding product
active contour model
edge extraction
initial contour
snaxel
