| 基于梯度投影稀疏重建算法的电容层析成像图像重建 |
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| 引用本文： | 张立峰,宋亚杰.基于梯度投影稀疏重建算法的电容层析成像图像重建[J].计量学报,2019,40(4):631-635. |
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| 作者姓名： | 张立峰 宋亚杰 |
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| 作者单位： | 华北电力大学自动化系,河北保定,071003;华北电力大学自动化系,河北保定,071003 |
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| 基金项目： | 国家自然科学基金(51306058); 中央高校基本科研业务费专项资金(2017MS131) |
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| 摘 要： | 为解决两相流中存在中心物体、物体比较小或存在多个物体且相距较近时电容层析成像(ECT)重建图像精度较差的问题,基于稀疏分布的流型其介电常数分布满足稀疏性的先验条件,采用梯度投影稀疏重建(GPSR-BB)算法进行ECT图像重建。仿真及实验测试结果表明:GPSR-BB算法对于流体中小目标以及复杂流型的图像重建质量较好,重建图像的形状保真度高。
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| 关 键 词： | 计量学 电容层析成像 图像重建 稀疏重构 梯度投影 Barzilai-Borwein法 |
| 收稿时间： | 2018-01-11 |
Image Reconstruction for Electrical Capacitance Tomography Based on Barzilai-Borwein Gradient Projection for Sparse Reconstruction Algorithm |
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| ZHANG Li-feng,SONG Ya-jie.Image Reconstruction for Electrical Capacitance Tomography Based on Barzilai-Borwein Gradient Projection for Sparse Reconstruction Algorithm[J].Acta Metrologica Sinica,2019,40(4):631-635. |
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| Authors: | ZHANG Li-feng SONG Ya-jie |
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| Affiliation: | Department of Automation, North China Electric Power University, Baoding, Hebei 071003, China |
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| Abstract: | During the process of image reconstruction for electrical capacitance tomography, the permittivity of sparse distribution flow regime meets the priori condition of sparsity, the ECT image reconstruction algorithm based on Barzilai-Borwein gradient projection for sparse reconstruction (GPSR-BB) was presented to solve the problem that the reconstructed image is poor when there is a central object, the object is small or there are many objects close to each other in the two-phase flow. Simulation and experimental results showed that GPSR-BB algorithm has a better imaging effect for image reconstruction of small and complex flow patterns, and the reconstructed images with better shape fidelity can be obtained. |
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| Keywords: | metrology electrical capacitance tomography image reconstruction sparse reconstruction gradient projection Barzilai-Borwein method |
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