基于金相图片与OpenCV技术的二次枝晶间距测量系统  

System for Secondary Dendrite Spacing Measurement Based on Metallographic Images and OpenCV Technique

作　　者：李胜民 谢垚 李军义 殷亚军[1] 沈旭[1] 计效园[1] 王东新 周建新[1] Li Shengmin;Xie Yao;Li Junyi;Yin Yajun;Shen Xu;Ji Xiaoyuan;Wang Dongxin;Zhou Jianxin(State Key Laboratory of Material Processing and Die&Mould Technology,Huazhong University of Science and Technology;Northwest Rare Metal Materials Research Institute Ningxia Co.,Ltd.)

机构地区：[1]华中科技大学材料成形与模具技术全国重点实验室 [2]西北稀有金属材料研究院宁夏有限公司

出　　处：《特种铸造及有色合金》2023年第12期1628-1632,共5页Special Casting & Nonferrous Alloys

基　　金：国家重点研发计划资助项目(2020YFB1710100)。

摘　　要：为了解决传统测量方法中过分依赖经验、操作时间较长、缺乏专业软件的问题,提出了一种利用OpenCV自动分析金相图测量二次枝晶间距的方法,并开发了相应自动计算系统。通过50组金相组织的测量试验验证了系统的高效性和准确性。结果表明,测量系统与传统方法的测量误差不超过15%,耗时相比于传统方法缩短了75%以上。In order to solve the problems of over reliance on experience,long operation time and lack of professional software in traditional measurement methods,a method of automatically analyzing metallographic images and measuring secondary dendrite spacing was proposed using the OpenCV,and a corresponding automatic calculation system was developed.The efficiency and accuracy of the system were verified by 50 sets of metallographic measuring experiments.The results indicate that the measurement error between the measurement system and traditional method is less than 15%,and the time consumption is reduced by more than 75%,compared with traditional methods.

关 键 词：OPENCV 二值化 机器视觉 二次枝晶间距 

分 类 号：TG245[金属学及工艺—铸造] TP311[自动化与计算机技术—计算机软件与理论]