北京测绘2025，Vol.39Issue(5)：636-641,6.DOI:10.19580/j.cnki.1007-3000.2025.05.010
最大池化与自注意力池化相结合的古城墙加固工程三维测量技术
Three-dimensional measurement technology for ancient city wall reinforcement based on a combination of max pooling and self-attention pooling
摘要
Abstract
Due to the complex imaging optical path of the ancient city wall reinforcement images,the image feature regions are interdependent and intertwined,leading to insufficient accuracy in the generated structural information of the ancient city wall and a decline in the accuracy of the three-dimensional(3D)measurement results.To address this issue,this paper proposed a three-dimensional measurement technology for ancient city wall reinforcement that combines max pooling and self-attention pooling.First,by analyzing the center of the light path in the imaging of the ancient city wall,a Fourier transform window was established,and the ancient city wall image was reconstructed through three-phase shifting to remove image noise.Then,by combining the max pooling method with the self-attention pooling mechanism,a dual pooling operation was performed on the ancient city wall image.The weight of each image in the self-attention pooling layer was calculated to analyze the dependency relationships between the feature regions in the image,thereby generating the key structural features of the ancient city wall image.Finally,based on the generated image features,the parameters of the ancient city wall 3D model were calibrated to achieve 3D measurement for the ancient city wall reinforcement.According to engineering practice,the confidence interval(CI)of this technology in practical applications reaches above 0.75,demonstrating high accuracy in 3D measurement and meeting the data measurement requirements in the ancient city wall reinforcement project.关键词
自注意力池化机制/双重池化操作/古城墙加固/傅里叶变换窗口/三维测量Key words
self-attention pooling mechanism/dual pooling operation/ancient city wall reinforcement/Fourier transform window/three-dimensional(3D)measurement分类
测绘与仪器引用本文复制引用
李国勇..最大池化与自注意力池化相结合的古城墙加固工程三维测量技术[J].北京测绘,2025,39(5):636-641,6.基金项目
广东省重点领域研发计划(2020B0101130009) （2020B0101130009）
