单目视觉测量强夯夯沉量的误差分析
Error Analysis of Ramming Settlement Measurement with Monocular Vision Method
高乔裕 1金银龙 1张宏阳 1李飞羽 1刘全1
作者信息
- 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北 武汉,430072
- 折叠
摘要
人工测量夯沉量的方式精度差、效率低且危险性高.针对这些问题,利用单目视觉方法实现了夯沉量的实时高效测量.为验证该方法的有效性,基于夯沉量解算模型,根据误差传播定律建立了夯沉量精度评价模型,并进行了误差敏感性分析,给出了提高夯沉量测量精度的方法和建议.结果表明,对测量精度影响最大的参数为相机俯仰角;特征点识别误差是测量结果误差的主要来源.工程实测结果表明,夯沉量解算均方误差为±28.46 mm,符合工程现场夯沉量测量误差的精度要求,具有推广价值.
Abstract
To address the problems of manual measurement of ramming settlement such as poor accuracy,low efficiency and high risk,the monocular vision method is used to realize the real-time and high-efficiency measurement of ramming set-tlement.To verify the effectiveness of this method,the ram-ming settlement accuracy evaluation model is established based on the ramming settlement calculation model and the er-ror propagation law.The error sensitivity analysis is carried out,and some suggestions are given to improve the accuracy of ramming settlement measurement.The results show that the parameter which has the greatest impact on the measure-ment accuracy is the camera pitch angle,and the feature point recognition error is the main source of the measurement error.The engineering results show that the mean square error of the ramming settlement is±28.46 mm,which meets the ac-curacy requirements of the measurement error of ramming set-tlement at the engineering site,and has great promotion value.
关键词
单目视觉/夯沉量/误差传播定律/敏感性分析Key words
monocular vision/ramming settlement/error propagation law/error sensitivity analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据