Title :
Geometrical similarities of the Orlov and Tuy sampling criteria and a numerical algorithm for assessing sampling completeness
Author :
Metzler, S.D. ; Bowsher, J.E. ; Jaszczak, R.J.
Author_Institution :
Dept. of Radiol., Duke Univ., Durham, NC, USA
Abstract :
Tuy (1983) and others have derived a sufficiency condition for complete sampling using a cone-beam geometry. Herein, we express Tuy´s cone-beam condition in the language and geometry of Orlov´s (1975) condition for parallel-beam collimation. One may determine from this condition what volume is completely sampled. This inversion has been implemented in software. The software determines a lower bound on the completely sampled volume for arbitrary orbits.
Keywords :
computerised tomography; image reconstruction; image sampling; medical image processing; Orlov sampling; Tuy sampling; computerized tomography; sampling completeness; software; Biomedical engineering; Collimators; Density functional theory; Electron microscopy; Geometry; Orbits; Radiology; Sampling methods; Solids; Tin;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2002 IEEE
Print_ISBN :
0-7803-7636-6
DOI :
10.1109/NSSMIC.2002.1239544
