Propagation Beam Consideration for 3D THz Computed Tomography
Idioma
en
Article de revue
Este ítem está publicado en
Optics Express. 2012-02-27, vol. 20, n° 5, p. 5817-5829
Optical Society of America - OSA Publishing
Resumen en inglés
In this paper, a model of the beam propagation is developed according to the physical properties of THz waves used in THz computed tomography (CT) scan imaging. This model is first included in an acquisition simulator to ...Leer más >
In this paper, a model of the beam propagation is developed according to the physical properties of THz waves used in THz computed tomography (CT) scan imaging. This model is first included in an acquisition simulator to observe and estimate the impact of the Gaussian beam intensity profile on the projection sets. Second, the model is introduced in several inversion methods as a convolution filter to perform efficient tomographic reconstructions of simulated and real acquired objects. Results obtained with three reconstruction methods (BFP, SART and OSEM) are compared to the techniques proposed in this paper. We focus our discussion on the efficiency of optimized algorithms to increase the overall quality and accuracy of the reconstructions.< Leer menos
Palabras clave en inglés
Terahertz imaging
Tomographic imaging
Three-dimensional image processing
Image reconstruction techniques
Scanners.
Scanners
Proyecto europeo
Development and Optimization of THz NDT on Aeronautics Composite Multi-layered Structure
Orígen
Importado de HalCentros de investigación