Abstract
This study aimed to compare accuracy and precision errors of three Digital Volume Correlation (DVC) approaches in a particular 3D zero-strain condition for both trabecular and cortical bone specimens, imaged repeatedly using micro-CT. Both scalar average errors and errors affecting the individual components of displacements and strains were calculated. For each DVC approach, errors decreased asymptotically for larger sub-volume sizes in the range explored. Considering this particular set of images, the global approach (ShIRT-FE) showed an overall better accuracy and precision than the local ones (DaVis). The latter show reasonable results for large nodal spacing, particularly for trabecular bone.
Original language | English |
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Article number | 071006 |
Number of pages | 14 |
Journal | Journal of Biomechanical Engineering |
Volume | 137 |
Issue number | 7 |
Early online date | 2 Jun 2015 |
DOIs | |
Publication status | Published - Jul 2015 |
Keywords
- Digital volume correlation
- registration
- micro-CT
- zero-strain test
- bone
- accuracy
- precision