scholarly journals Review of Image Reconstruction Methods in X-Ray Computed Tomography with Cone-Beam Geometry

2018 ◽  
Vol 18 (2) ◽  
pp. 29-37
Author(s):  
E.N. Simonov ◽  
M.V. Avramov
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
Cone Beam ◽  
X Ray ◽  
Beam Geometry ◽  
Reconstruction Methods ◽  
X Ray Computed

Automatic Knot Detection in Coarse-Resolution Cone-Beam Computed Tomography Images of Softwood Logs

2019 ◽  
Vol 69 (3) ◽  
pp. 185-187
Author(s):  
Magnus Fredriksson ◽  
Julie Cool ◽  
Stavros Avramidis
Keyword(s):  
Computed Tomography ◽  
Exploratory Study ◽  
Ct Scanning ◽  
Detection Algorithm ◽  
Cone Beam ◽  
X Ray ◽  
Coarse Resolution ◽  
Computed Tomography Images ◽  
X Ray Computed ◽  
Accurate Position

Abstract X-ray computed tomography (CT) scanning of sawmill logs is associated with costly and complex machines. An alternative scanning solution was developed, but its data have not been evaluated regarding detection of internal features. In this exploratory study, a knot detection algorithm was applied to images of four logs to evaluate its performance in terms of knot position and size. The results were a detection rate of 67 percent, accurate position, and inaccurate size. Although the sample size was small, it was concluded that automatic knot detection in coarse resolution CT images of softwoods is feasible, albeit for knots of sufficient size.

scholarly journals Effects of off-focal radiation on dimensional measurements in industrial cone-beam micro-focus X-ray computed tomography systems

2020 ◽  
Vol 66 ◽  
pp. 472-481
Author(s):  
Nadia Flay ◽  
Stephen Brown ◽  
Wenjuan Sun ◽  
Thomas Blumensath ◽  
Rong Su
Keyword(s):  
Computed Tomography ◽  
Cone Beam ◽  
X Ray ◽  
Dimensional Measurements ◽  
X Ray Computed

scholarly journals Constrained Total Generalized p-Variation Minimization for Few-View X-Ray Computed Tomography Image Reconstruction

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0149899 ◽  
Author(s):  
Hanming Zhang ◽  
Linyuan Wang ◽  
Bin Yan ◽  
Lei Li ◽  
Ailong Cai ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
X Ray ◽  
Tomography Image ◽  
X Ray Computed ◽  
Computed Tomography Image
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