An auto-focus method for generating sharp 3D tomographic images

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 7804, Issue , 2010, Pages

  Kingston, A M ^a   Sakellariou, A ^a   Sheppard, A P ^a   Varslot, T K ^a   Latham, S J ^a  

^a AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

alignment; autofocus; Computed tomography; sharpness

Indexed keywords

3D RECONSTRUCTION; ALIGNMENT PARAMETER; AUTO-FOCUS; COMPUTATION TIME; COMPUTED TOMOGRAPHY; GEOMETRIC MODELS; ITERATIVE TECHNIQUE; MICRO CT; MULTISCALES; OFF-LINE SOFTWARES; PARALLEL BEAMS; PARAMETER SET; PROJECTION DATA; PROJECTION SETS; RECONSTRUCTION ALGORITHMS; SHARPNESS; TOMOGRAPHIC; TOMOGRAPHIC IMAGES; TOMOGRAPHIC RECONSTRUCTION;

ALIGNMENT; IMAGING SYSTEMS; THREE DIMENSIONAL;

COMPUTERIZED TOMOGRAPHY;

EID: 78649430525     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.860285     Document Type: Conference Paper

References (27)

1. Bronnikov, A., "Virtual alignment of x-ray cone-beam tomography system using two calibration aperture measurements," Optical Engineering 38, 381-386 (1999). (Pubitemid 129583767)
2. Weitkamp, T. and Bleuet, P., "Automatic geometrical calibration for x-ray microtomography based on Fourier and Radon analysis," in [Proc. SPIE Developments in X-Ray Tomography IV], Bonse, U., ed., 5535, 623-627 (2004).
3. Sun, Y., Hou, Y., Zhao, F., and Hu, J., "A calibration method for misaligned scanner geometry in cone-beam computed tomography," NDT & E International 39(6), 499-513 (2006).
4. Yang, K., Kwan, A., Miller, D., and Boone, J., "A geometric calibration method for cone beam ct systems," Medical Physics 33(6), 1695-1706 (2006). (Pubitemid 43830258)
5. Mennessier, C. and Clackdoyle, R., "Automated geometric calibration and reconstruction in circular conebeam tomography," in [Proc. IEEE Nuclear Science Symposium], 5081-5085 (2008).
6. Mennessier, C., Clackdoyle, R., and Noo, F., "Direct determination of geometric alignment parameters for cone-beam scanners," Physics in Medicine and Biology 54, 1633-1660 (2009).
7. Kyprianou, I., Paquerault, S., Gallas, B., Badano, A., Park, S., and Myers, K., "Framework for determination of geometric parameters of a cone beam ct scanner for measuring the system response function and improved object reconstruction," in [Proc. IEEE Int. Symposium on Biomedical Imaging], 1248-1251 (2006).
8. Viskoe, A., "Computed tomography postacquisition data correction for system alignment errors," IEEE Trans. instrumentation & measurement 48(55), 972-977 (1999). (Pubitemid 30523392)
9. Panetta, D., Belcari, N., Guerra, A. D., and Moehrs, S., "An optimization-based method for geometrical calibration in cone-beam CT without dedicated phantoms," Physics in Medicine and Biology 53(14), 3841-3861 (2008). (Pubitemid 352020270)
10. Patel, V., Chityala, R., Hoffmann, K., Ionita, C., Bednarek, D., and Rudin, S., "Self-calibration of a cone-beam micro-ct system," Medical Physics 36(1), 48-58 (2009).
11. Brunetti, A. and Carlo, F. D., "A robust procedure for determination of center of rotation in tomography," in [Proc. SPIE Developments in X-Ray Tomography IV], Bonse, U., ed., 5535, 652-659 (2004).
12. Kyriakou, Y., Lapp, R., Hillebrand, L., Ertel, D., and Kalender, W., "Simultaneous misalignment correction for approximate circular cone-beam computed tomography," Physics in Medicine and Biology 53(22), 6267-6289 (2009).
13. Atkinson, D., Hill, D., Stoyle, P., Summers, P., and Keevil, S., "An autofocus algorithm for the automatic correction of motion artifacts in mr images," Information Processing in Medical Imaging LNCS 1230, 341-354 (1997). (Pubitemid 127085764)
14. Atkinson, D., Hill, D., Stoyle, P., Summers, P., Clare, S., Bowtell, R., and Keevil, S., "Automatic compensation of motion artifacts in mri," Magnetic Resonance in Medicine 41(1), 163-170 (1999). (Pubitemid 29068049)
15. Feldkamp, L., Davis, L., and Kress, J., "Practical cone-beam algorithm," J. Opt. Soc. Am. A(1), 612-619 (1984).
16. Sakellariou, A., "Investigation of misalignment errors for cone beam x-ray tomography," Internal Report - Dept. of Applied Math., Research School of Physics & Eng., Australian National University (2005).
17. Horn, B., "Focusing," Tech. Rep. Memo 160, MIT Artificial Intelligence Lab. (1968).
18. Groen, F., Young, I., and Ligthart, G., "A comparison of different focus functions for use in autofocus algorithms," Cytometry 6, 81-91 (1985).
19. Schlag, J., Sanderson, A., Neumann, C., and Wimberly, F., "Implementation of automatic focusing algorithms for a computer vision system with camera control," Tech. Rep. CMU-RI-TR-83-14, Carnegie Mellon Univ. (1983).
20. Krotkov, E., "Focusing," J. Comp. Vision 1, 223-237 (1987).
21. Subbarao, M., Choi, T., and Nikzad, A., "Shape from focus," J. Opt. Eng. 32, 2824-2836 (1993).
22. Shih, L., "Autofocus survey: a comparison of algorithms," in [Digital Photography III], Proc. SPIE-IS&T 6502, 65020B-1-65020B-11 (2007).
23. Tenenbaum, J., Accommodation in computer vision, PhD thesis, Stanford Univ. (1970).
24. Press, W., Teukolsky, S., Vetterling, W., and Flannery, B., [Numerical recipes in C (2nd ed.): the art of scientific computing], Cambridge University Press, New York, NY, USA (1992).
25. Sasov, A., Liu, X., and Salmon, P., "Compensation of mechanical inaccuracies in micro-CT and nano-CT," in [Developments in X-Ray Tomography VI], Proc. SPIE 7078, 70781C-1-70781C-9 (2008).
26. Varslot, T., Kingston, A., Sheppard, A., and Sakellariou, A., "Helical cone-beam micro-CT for fast highresolution imaging," in [Developments in X-Ray Tomography VII], SPIE (Aug 2010).
27. Katsevich, A., "Theoretically exact filtered backprojection-type inversion algorithm for spiral ct," SIAM Journal on Applied Mathematics 62(6), 2012-2026 (2002).