数据采集与处理2017，Vol.32Issue(5)：861-868,8.DOI:10.16337/j.1004-9037.2017.05.002
一种基于全相位预处理有效消除图像Gibbs伪迹的方法
Reduction of Gibbs Ringing Artifact Based on All-Phase Pre-processing
摘要
Abstract
As an important tool of signal processing,classical Fourier reconstruction does well in reconstructing continuous signals,but it also suffers from Gibbs artifact for reconstruction of discontinuous signals.Since Gibbs artifact causes serious edge distortion and greatly degrades the quality of image,this paper presents an improved 2D all-phase Fourier reconstruction algorithm.The algorithm incorporates multiple higher-frequency harmonics with a limited number of discrete Fourier transform (DFT) coefficients,and therefore it can reconstruct discontinuous signals with higher precision.When the proposed algorithm is applied to magnetic resonance imaging (MRI) image reconstruction,experimental results show that,compared with the classical Fourier transform,the proposed algorithm can restrain Gibbs artifact more effectively and improve the quality of reconstructed images under the condition of the same amount of 2D Fourier coefficients.关键词
经典傅氏重构/磁共振成像/Gibbs效应/全相位Key words
classical Fourier reconstruction/magnetic resonance imaging/Gibbs artifact/all-phase分类
信息技术与安全科学引用本文复制引用
褚晶辉,王晓娜,黄翔东,吕卫..一种基于全相位预处理有效消除图像Gibbs伪迹的方法[J].数据采集与处理,2017,32(5):861-868,8.基金项目
国家自然科学基金(61271609)资助项目. （61271609）
