Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/139088
Title: RECONSTRUCTION OF DEFECTIVE SKULLS BY NON-RIGID REGISTRATION WITH INTERPOLATING SURFACE
Authors: XIE SHUDONG
Keywords: skull reconstruction, non-rigid registration, interpolating surface, surgery planning
Issue Date: 24-Aug-2017
Citation: XIE SHUDONG (2017-08-24). RECONSTRUCTION OF DEFECTIVE SKULLS BY NON-RIGID REGISTRATION WITH INTERPOLATING SURFACE. ScholarBank@NUS Repository.
Abstract: Reconstruction of skulls from defective models is a very important and challenging task in craniofacial surgery, forensic investigation and physical anthropology. Manual skull reconstruction is subjective, inaccurate and time-consuming, whereas existing computer-aided reconstruction methods are not accurate and have their limitations. This thesis proposes an accurate and robust algorithm called FAIS (Flip-Avoiding Interpolating Surface) for reconstructing a normal skull given a defective target skull. The reconstruction is performed by non-rigidly registering an interpolating surface that regards corresponding target points as hard constraints, thus achieving low reconstruction error. To overcome the shortcoming of interpolating surface, a flip-avoiding method is used to detect and exclude conflicting hard constraints that would otherwise cause surface patches to flip. Comprehensive test results show that FAIS is more accurate than existing methods and it is robust against severe outliers such as radiation artifacts in CT due to dental implants. Moreover, two software tools are developed to gather the user inputs needed for the reconstruction algorithm. With the software tools equipped with the reconstruction algorithm, the user should be able to generate an accurate reconstructed skull model conveniently.
URI: http://scholarbank.nus.edu.sg/handle/10635/139088
Appears in Collections:Ph.D Theses (Restricted)

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