基于改进Hough变换的纸塑复合袋视觉定位算法  

Visual Positioning Algorithm of Paper Plastic Composite Bag Based on Improved Hough Transform

作　　者：严国平 吴世燃 朱晓凡 钟飞[1] 周宏娣 YAN Guo-ping;WU Shi-ran;ZHU Xiao-fan;ZHONG Fei;ZHOU Hong-di(School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学机械工程学院,武汉430068

出　　处：《包装工程》2021年第7期220-224,共5页Packaging Engineering

基　　金：湖北省技术创新专项(重大专项)(2018AAA026);湖北省自然科学基金(2019CFB326);湖北工业大学博士启动基金(BSQD2017001)。

摘　　要：目的为快速精确获取纸塑复合袋纠偏过程中的位置偏移和倾角信息,提出一种基于改进Hough变换的纸塑复合袋视觉定位算法。方法首先通过大津法对平台上的纸塑复合袋图像进行分割,去除皮带部分;然后利用基于方差的差异化滤波方法对纸塑复合袋图像进行降噪处理,突出复合袋图像边缘;最后运用Canny算子获取纸塑复合袋边缘点,利用改进的Hough变换算法对纸塑复合袋4条边线进行直线提取,求解纸塑复合袋的中心位置和倾角。结果改进算法在直线提取精度和耗时2个方面均优于传统Hough变换算法,获取纸塑复合袋位置和倾角只需0.335 s,耗时减少了76%。结论改进算法的耗时满足纠偏定位要求。In order to quickly and accurately obtain the position offset and inclination information of the paper-plastic composite bag during the correction process,this paper proposes a paper-plastic composite bag visual positioning algorithm based on improved Hough transform.First,the paper-plastic composite bag image on the platform was segmented by the Otsu method to remove the belt part;then the paper-plastic composite bag image was denoised by the variance-based differential filtering method to highlight the edge of the composite bag image;finally,the Canny calculation was used to obtain the edge points of the paper-plastic composite bag,and the improved Hough transform algorithm was used to extract the four edges of the paper-plastic composite bag as a straight line to solve the center position and inclination of the paper-plastic composite bag.The improved algorithm was superior to the traditional Hough transform algorithm in terms of line extraction accuracy and time-consuming.It only took 0.335 s to obtain the position and inclination of the paper-plastic composite bag,which reduced the time consumption by 76%.Therefore,the time consumption of the improved algorithm meets the requirements of deviation correction and location.

关 键 词：纸塑复合袋 视觉定位 图像滤波 HOUGH变换 

分 类 号：TB487[一般工业技术—包装工程]