光学精密工程2025，Vol.33Issue(5)：763-776,14.DOI:10.37188/OPE.20253305.0763
基于机器视觉的透明软管内微量液体体积测量
Machine vision-based method for measuring micro-volume liquid in transparent tubes
摘要
Abstract
This study addresses the necessity for rapid and precise measurement of micro-volume liquids(approximately 0.1 mL to 0.6 mL)within transparent tubes in industrial production settings.A machine vision-based measurement methodology is proposed,which integrates a specifically designed imaging sys-tem alongside an adaptive neighborhood-weighted brightness analysis algorithm to reliably extract the pixel length of liquid segments.This approach effectively mitigates challenges such as bubble interference,un-even lighting,and reflections from the tube's surface.Two measurement strategies are consequently intro-duced:the first is a calibration-based method utilizing static weighing to establish a quantitative model that correlates the pixel length of the liquid segment with the actual volume;the second is a homography-based coordinate transformation method,which translates pixel coordinates into physical space and calculates vol-ume by incorporating the tube's inner diameter.Experimental results indicate that,under complex condi-tions,the proposed methods achieve measurement accuracies of approximately 98.3%and 98.4%,there-by satisfying the demands for rapid micro-volume liquid measurement in industrial applications.This meth-odology demonstrates significant potential for application and offers prospects for widespread adoption.关键词
机器视觉/目标分割/曲线拟合/体积测量Key words
machine vision/object segmentation/curve fitting/volume measurement分类
计算机与自动化引用本文复制引用
王昊,李星辉,肖巍,钱翔,王晓浩..基于机器视觉的透明软管内微量液体体积测量[J].光学精密工程,2025,33(5):763-776,14.基金项目
国家自然科学基金资助项目(No.62275142) （No.62275142）
深圳市稳定支持计划资助项目(No.WDZC20231124201906001) （No.WDZC20231124201906001）
