南京理工大学学报（自然科学版）2016，Vol.40Issue(1)：50-55,6.DOI:10.14177/j.cnki.32-1397n.2016.40.01.008
改进Canny的核磁共振图像伪影校正算法
Correction algorithm of artifact in magnetic resonance imaging based on improved Canny
摘要
Abstract
Correction of magnetic resonance imaging artifact is a hot research in the field of image processing. In order to eliminate the artifacts in magnetic resonance imaging and improve the quality of magnetic resonance imaging, a new algorithm based on the improved Canny is proposed in this paper. We analyze the current research situation of magnetic resonance imaging artifact correction, and point out their shortcomings,and use the improved Canny operator to detect and identify the false image edge. Bilateral filtering is used to remove the noise and enhance the artifact information of magnetic resonance imaging while the optimal threshold is selected by the Otsu method. The B spine method is used to correct the abnormal projection data and the performance of the algorithm are verified by simulation experiments. The results show that the proposed algorithm can effectively suppress the artifacts in the magnetic resonance imaging,and the visual effect and objective results are better than the current classical correction algorithms, which is conducive to the following processing of magnetic resonance imaging.关键词
核磁共振图像/边缘检测/伪影校正/Canny算子/图像退化/双边滤波/高斯滤波Key words
magnetic resonance imaging/edge detection/artifact correction/Canny operator/image degradation/bilateral filtering/Gauss filter分类
信息技术与安全科学引用本文复制引用
张琳梅,赵莉..改进Canny的核磁共振图像伪影校正算法[J].南京理工大学学报（自然科学版）,2016,40(1):50-55,6.基金项目
河南省教育厅科学技术研究重点项目(16A520091) （16A520091）
