On the roles of sparsity and sparsifying transforms in Computerized Tomography

Sonkar, Munnu and Sastry, Challa Subrahmanya (2015) On the roles of sparsity and sparsifying transforms in Computerized Tomography. Masters thesis, Indian Institute of Technology Hyderabad.

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X-ray computed tomography (CT) is one of the most widely used imaging modalities for diagnostic tasks in the clinical application. As X-ray dosage given to the patient has potential to induce undesirable clinical consequences, there is a need for reduction in dosage while maintaining good quality in reconstruction. This report explores the roles of concept of sparsity and sparsifying trans-forms via Frames, Wavelets etc. and their relevance to low-dose tomography. After giving detailed descriptions of basics of Computed Tomography, Frames/Wavelets and Compressive Sensing Theory, the report proposes a TV-norm based method for the reconstruction of Tomography. Finally, the report ends with some discussion on simulation results.

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IITH Creators:
IITH CreatorsORCiD
Sastry, Challa SubrahmanyaUNSPECIFIED
Item Type: Thesis (Masters)
Uncontrolled Keywords: Wavelets, computed tomography, Frames, TD399
Subjects: ?? sub3.8 ??
Divisions: Department of Mathematics
Depositing User: Library Staff
Date Deposited: 14 Jul 2015 05:39
Last Modified: 21 May 2019 10:44
URI: http://raiith.iith.ac.in/id/eprint/1697
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