Computerized tomography with total variation and with shearlets

• Published in: Inverse problems Vol. 33; no. 4; pp. 44011 - 44034
• Main Authors: Garduño, Edgar, Herman, Gabor T
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.04.2017
• Subjects: computerized tomography; optimization; reconstruction algorithm; shearlet; superiorization

To reduce the x-ray dose in computerized tomography (CT), many constrained optimization approaches have been proposed aiming at minimizing a regularizing function that measures a lack of consistency with some prior knowledge about the object that is being imaged, subject to a (predetermined) level o...