Adaptive grid pattern artifact reduction in radiography imaging based on the significant-signal bandwidth

Abstract

In order to obtain more clear x-ray images, an antiscatter grid, which can absorb the scattered rays, is employed. In the high-resolution direct digital radiography, however, the artifacts due to the grid pattern are visible, and their strength are dependent on the x-ray exposure amount. In this paper, we first analyze the effect of the exposure amount on the grid artifacts by proposing a modulated image formation model, and then, to reduce the grid artifacts, an adaptive filtering algorithm, which can measure the strength of the grid artifacts based on the significant-signal bandwidth, is proposed. Numerical analysis for real x-ray digital images are also conducted with some comparison.

DOI: 10.1109/ICIP.2011.6115721

4 Figures and Tables

Cite this paper

@article{Kim2011AdaptiveGP, title={Adaptive grid pattern artifact reduction in radiography imaging based on the significant-signal bandwidth}, author={Dong Sik Kim and Sanggyun Lee}, journal={2011 18th IEEE International Conference on Image Processing}, year={2011}, pages={1473-1476} }