Fusion of X-ray and geometrical data in computed tomography for nondestructive testing applications
Proceedings of the Fifth International Conference on Information Fusion. FUSION 2002. (IEEE Cat.No.02EX5997) - Tập 1 - Trang 309-316 vol.1
Tóm tắt
X-ray computed tomography (CT) is widely used in nondestructive testing (NDT) techniques. While in medical imaging, classical methods based on backprojection (BP) or algebraic reconstruction techniques (ART) are satisfactory, in NDT applications, data acquisition constraints are such that these methods do not give satisfactory results. There is then a need for extra information and other kinds of data. In this paper, we consider an X-ray CT image reconstruction problem using two different kind of data: classical X-ray radiographic data and geometrical information and propose new methods based on regularization and Bayesian estimation for this data fusion problem. We use two kinds of geometrical information: partial knowledge of values in some regions and partial knowledge of the edges of other regions. We show the advantages of using such information on increasing the quality of reconstructions in a NDT application of wide layered shape (sandwich) structures. We also show results to analyze the effects of errors in these data on the reconstruction results.
Từ khóa
#Computed tomography #X-ray imaging #Nondestructive testing #Image reconstruction #Biomedical imaging #Subspace constraints #Data acquisition #Radiography #Bayesian methods #ShapeTài liệu tham khảo
10.1109/83.551699
10.1109/83.392335
10.1137/S003614299529230X
10.1109/42.24868
10.1109/34.120331
10.1109/ICIP.1994.413553
blake, 1987, Visual Reconstruction, 10.7551/mitpress/7132.001.0001
10.1109/ICIP.1998.999027
10.1109/42.52985
10.1109/CVPR.1994.323842
10.1007/978-1-4613-0147-9_6
fiani, 2001, Algorithmes ART semi-quadratiques pour la reconstruction a? partir de radiographies, Actes du Colloque GRETSI
10.1109/42.251117
gautier, 1995, Vers la fusion de donne?es gammagraphiques et ultrasonores, Actes du Colloque GRETSI, 869
mohammad-djafari, 1997, Probabilistic methods for data fusion, Maximum Entropy and Bayesian Methods
gautier, 1995, Fusion de Donne?es Radio-graphiques et Ultrasonores en Vue d'Une Applicaion en Contro?le Non Destructif
10.1007/BF00735535
10.1049/ip-vis:19941184
gautier, 1996, Fusion de Donne?es Gammagraphiques et Ultrasonores Application Au Contro?le Non Destructif
gautier, 1995, Data Fusion in the Field of Non Destructive Testing Maximum Entropy and Bayesian Methods