Algebraic filter approach for fast approximation of nonlinear tomographic reconstruction methods

作者：Plantagie Linda^*; Batenburg Kees Joost

来源：Journal of Electronic Imaging, 2015, 24(1): 013026.

DOI：10.1117/1.JEI.24.1.013026

• tomography
• filtered backprojection
• algebraic reconstruction methods
• image reconstruction

We present a computational approach for fast approximation of nonlinear tomographic reconstruction methods by filtered backprojection (FBP) methods. Algebraic reconstruction algorithms are the methods of choice in a wide range of tomographic applications, yet they require significant computation time, restricting their usefulness. We build upon recent work on the approximation of linear algebraic reconstruction methods and extend the approach to the approximation of nonlinear reconstruction methods which are common in practice. We demonstrate that if a blueprint image is available that is sufficiently similar to the scanned object, our approach can compute reconstructions that approximate iterative nonlinear methods, yet have the same speed as FBP.

• 出版日期2015-1