CT理论与应用研究2025，Vol.34Issue(4)：525-533,9.DOI:10.15953/j.ctta.2025.116
基于梯度信息约束的双视角CT重建算法
Dual-view CT Reconstruction Algorithm Based on Gradient Information Constraints
摘要
Abstract
Computed tomography(CT)technology has demonstrated significant application value in industrial inspection owing to its non-destructive testing capabilities,high resolution,and visualization features.However,in certain industrial inspection scenarios,extremely limited scanning conditions pose substantial challenges for projection data acquisition,restricting the application of traditional reconstruction methods.To address this challenge,this study proposes an orthogonal dual-view 3D reconstruction network tailored for rapid CT imaging.The proposed method employs an encoder-decoder architecture,utilizing 2D convolutions instead of 3D convolutions to infer the depth dimension of CT volumes through feature channels,thereby enhancing model inference speed.Additionally,gradient information and gradient loss are introduced to strengthen the edge recovery capability of the network.The method is validated on walnut and Fuze datasets.Experimental results showed that reconstructing a volume with a resolution of 128 required only 0.19 s,and the structural similarity of the reconstructed images was higher than 0.98.This approach demonstrates effective capability in inferring 3D CT volumes from dual-view 2D projections,revealing its future potential in rapid CT imaging.关键词
双视角投影/CT重建/编解码网络/梯度约束Key words
dual-view projection/CT reconstruction/encoder-decoder network/gradient constraint分类
信息技术与安全科学引用本文复制引用
胡海,孙雪琴,李毅红,陈平..基于梯度信息约束的双视角CT重建算法[J].CT理论与应用研究,2025,34(4):525-533,9.基金项目
国家重点研发计划(半导体器件封装质量智能检测关键技术研究与应用示范(2023 YFE0205800)) （半导体器件封装质量智能检测关键技术研究与应用示范(2023 YFE0205800）
国家自然科学基金(面向固体火箭发动机内结构剖面动态测试的双视角X射线快速CT成像(62471442)) （面向固体火箭发动机内结构剖面动态测试的双视角X射线快速CT成像(62471442）
国家自然科学基金(面向黄土质煤岩层孔裂隙结构动态表征的宽视场高分辨动态CT成像研究(U23 A20285)) （面向黄土质煤岩层孔裂隙结构动态表征的宽视场高分辨动态CT成像研究(U23 A20285）
山西省自然科学基金(基于双视角X射线CT成像的固体火箭发动机内结构剖面测试方法(202303021211149)) （基于双视角X射线CT成像的固体火箭发动机内结构剖面测试方法(202303021211149）
山西省重点研发计划复杂产品三维CT实时成像及缺陷智能识别(202302150401011)). （202302150401011）
