| Titre : | From laboratory to field tomography : data collection and performance assessment (2011) |
| Auteurs : | Zeljko Kuzeljevic, Auteur ; Milorad Dudukovic, Auteur ; Hugh Stitt, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 50 N° 17, Septembre 2011) |
| Article en page(s) : | pp. 9890-9900 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Tomography |
| Résumé : | In field tomography, the total number of scan lines collected during imaging is usually limited. At the same time, the demands on the technique regarding resolution are low, corresponding to diagnostic purposes (e.g., presence or absence of maldistribution). In this study, we investigate the level of information needed for purpose of field diagnostics when using a fan beam tomography scanner. We utilize the theoretical framework of Fisher information content to examine dependence between projection data collection methodology and image quality. The findings are substantiated by experimental results obtained on suitable phantom designed to mimic maldistribution in packed bed. The performance of expectation-maximization and alternating-minimization image reconstruction algorithms for varying number of scan lines used is compared. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=24483632 |
