三结构各向同性包覆燃料颗粒相衬CT图像的噪声和伪像抑制方法初探

彭亚辉, 曹旭阳, 陈后金, 李艳凤, 李居朋, 王贤刚

电子学报 ›› 2019, Vol. 47 ›› Issue (2) : 448-453.

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电子学报 ›› 2019, Vol. 47 ›› Issue (2) : 448-453. DOI: 10.3969/j.issn.0372-2112.2019.02.027
学术论文

三结构各向同性包覆燃料颗粒相衬CT图像的噪声和伪像抑制方法初探

  • 彭亚辉1, 曹旭阳1, 陈后金1, 李艳凤1, 李居朋1, 王贤刚2
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Preliminary Study on Noise and Artifact Reduction in Phase-Contrast CT Image of Tristructural-Isotropic Coated Fuel Particle

  • PENG Ya-hui1, CAO Xu-yang1, CHEN Hou-jin1, LI Yan-feng1, LI Ju-peng1, WANG Xian-gang2
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文章历史 +

摘要

对三结构各向同性包覆燃料颗粒相衬CT图像的噪声和伪像抑制进行了初步探索,提出了三种方法分别抑制由探测器随机噪声、非线性漂移以及灵敏度非均匀性所导致的图像噪声或伪像.对抑制噪声或伪像前后的图像质量进行了主观评价以及定量分析,结果表明,本文提出的三种方法在有效抑制上述三种类型噪声或伪像的同时仍然能够保证重建图像中不同结构间边缘的清晰度.

Abstract

The purpose of the study was to reduce the noise and artifact in the phase-contrast computed tomography image of a tristructural-isotropic coated fuel particle.Three algorithms were proposed to reduce the noise and artifacts caused by the stochastic noise,non-linear drifting,and non-uniform sensitivity of the imaging detector,respectively.Subjective and quantitative evaluations were conducted before and after applying the algorithms.The results demonstrated that the proposed algorithms effectively reduced the three types of noise and artifacts,leaving the boundaries between different structures intact.

关键词

相衬计算机断层成像 / 三结构各向同性包覆燃料颗粒 / 噪声 / 伪像 / 抑制

Key words

phase-contrast computed tomography / tristructural-isotropic coated fuel particle / noise / artifact / reduction

引用本文

导出引用
彭亚辉, 曹旭阳, 陈后金, 李艳凤, 李居朋, 王贤刚. 三结构各向同性包覆燃料颗粒相衬CT图像的噪声和伪像抑制方法初探[J]. 电子学报, 2019, 47(2): 448-453. https://doi.org/10.3969/j.issn.0372-2112.2019.02.027
PENG Ya-hui, CAO Xu-yang, CHEN Hou-jin, LI Yan-feng, LI Ju-peng, WANG Xian-gang. Preliminary Study on Noise and Artifact Reduction in Phase-Contrast CT Image of Tristructural-Isotropic Coated Fuel Particle[J]. Acta Electronica Sinica, 2019, 47(2): 448-453. https://doi.org/10.3969/j.issn.0372-2112.2019.02.027
中图分类号: TP317.4   

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基金

国家自然科学基金 (No.11575095,No.61571262)
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