Accurate and efficient image-intensifier distortion-correction algorithm and its application in volume tomographic angiography

1997 ◽  
Author(s):  
Xiaohui Wang ◽  
Ruola Ning
Keyword(s):  
Image Intensifier ◽  
Distortion Correction ◽  
Correction Algorithm ◽  
Tomographic Angiography

An Integrated Method for XRII Image Distortion Correction

2015 ◽  
Vol 742 ◽  
pp. 252-256 ◽  
Author(s):  
Yuan Jin Li ◽  
Hua Zhong Shu ◽  
Tao Wang ◽  
Yang Wang ◽  
You Yong Kong
Keyword(s):  
Imaging System ◽  
Spline Interpolation ◽  
Image Intensifier ◽  
Least Square Method ◽  
Integrated Approach ◽  
Distortion Correction ◽  
Least Square ◽  
Integrated Method ◽  
Negative Effect ◽  
Biharmonic Spline Interpolation

The distorted X-Ray Image Intensifier (XRII) image can introduce negative effect on following work for C-arm CT imaging system. In this paper, we propose an integrated approach based on least squares and Biharmonic spline interpolation to correct geometric distortions of XRII images. The method first uses morphology operation to extract the coordinate values of control points. Then the least square method fits the extracted coordinate values in every row and computes the more coordinate values by fixing the length in every row. Finally, The Biharmonic spline interpolation is used to interpolate the all coordinate values and correct the distortional XRII image. The experiment shows that the integrated method can effectively correct the distorted XRII image.

Projection-angle-dependent distortion correction in high-speed image-intensifier-based x-ray computed tomography

2020 ◽  
Vol 32 (3) ◽  
pp. 035404
Author(s):  
Joaquim G Sanctorum ◽  
Sam Van Wassenbergh ◽  
Van Nguyen ◽  
Jan De Beenhouwer ◽  
Jan Sijbers ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Speed ◽  
Image Intensifier ◽  
Distortion Correction ◽  
X Ray ◽  
X Ray Computed ◽  
Projection Angle
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