金属表面LED线结构光条纹图像增强方法  

Image Enhancement Method of LED Line Structured Light Stripe on Metal Surface

作　　者：商执亿 尹培丽[1] SHANG Zhiyi;YIN Peili(School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710021,China;School of Mechanical and Electrical Engineering,Xi’an Polytechnic University,Xi’an 710048,China)

机构地区：[1]西安工业大学机电工程学院,陕西西安710021 [2]西安工程大学机电工程学院,陕西西安710048

出　　处：《机械与电子》2022年第9期3-6,共4页Machinery & Electronics

基　　金：国家自然科学基金资助项目(51975448);陕西省科技重大专项(2019zdzx01-02-02);陕西省教育厅专项科研计划项目(21JK0692)。

摘　　要：为避免线结构光测量中的干涉散斑噪声的影响,提出采用相干性低的LED光源的线结构光测量法,并搭建了测量系统。通过分析该方法在测量金属工件表面的条纹图像特点,提出了采用基于拉普拉斯金字塔的曝光图像融合方法来增强条纹图像质量。实验室环境图像的融合实验验证了该图像增强方法的可行性。最后完成了条纹图像的增强实验,结果表明,经2幅曝光图像融合后的条纹图的质量得到了提高,光条区的光强分布均匀,不存在明显的信息缺失区。To avoid the influence of interference speckle noise in line structured light measurement,a line structured light measurement method using low coherence LED light source is proposed,and a corresponding measurement system is developed.By analyzing the characteristics of stripe images on metal surface measured by this method,an exposure fusion method based on Laplace pyramid is proposed to enhance quality of stripe images.The feasibility of this image enhancement method is verified by fusion experiment of laboratory environment images.Finally,the enhancement experiment of stripe image is performed.The results indicates that the quality of stripeimage is improved by fusing the two exposure images.The light intensity distribution in stripe area is uniform,and there is no obvious information missing areas.

关 键 词：金属表面 LED光 线结构光 图像增强 曝光融合 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]