Ring Artifact Location Algorithm Based on Edge Detection
- VernacularTitle:一种基于边缘检测的环状伪影定位算法
- Author:
Weidong XI
;
Xiaoe YU
;
Ming ZHAO
- Publication Type:Journal Article
- Keywords:
ring artifact;
edge detection;
Sobel operator;
linear interpolation
- From:
Chinese Medical Equipment Journal
1989;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the Ring Artifact Location Algorithm based on edge detection to eliminate the ring artifact.Methods The Sobel operator was used to extract the ring edge,and then an algorithm,which combined scan line searching with line fitting,was applied to determining the ring center and its size.Finally the linear interpolation algorithm was used to get rid of the ring artifact.Results This method was very effective to eliminate the ring artifact of both phantom and clinical images.Conclusion This algorithm is faster and more effective than the usual one and its speed and accuracy are improved.
