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Geometric Region Reconstruction of Steel-tube Computed Radiography Using Nonlinear Structural Analysis  

Hwang, Jae-Ho (Dept. of Electronic Engineering Hanbat National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.46, no.6, 2009 , pp. 146-152 More about this Journal
Abstract
The steel-tube is exposed to a radiation from X-ray source. The transmitted radiation is detected by a detector, usually film or more recently an imaging plate(IP) of Computed Radiography(CR). The detected radiation overlaps the region of both sides of the object. The radiographic images reflect the projections of the rays, passing twice through both external and internal tube material. Nonlinear distortion due to the radioactive transmission and geometric disposition also appears on images. In this paper, an analytical approach is presented to achieve image reconstruction from the steel-tube CR images. Parameters related to radiation and measuring structure, such as intensities, absorption in material and geometric specifications linked with the collimating components, are calculated and identified in order to construct the renoval images for twofold regions of circle-type steel tubes. A correction procedure for region recovery most similar to the true tube is designed. The application of this approach on CR images is shown and reconstructed results are discussed.
Keywords
Computed Radiography; Image reconstruction; Steel-tube; Measuring structure;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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