Limited-angle optical computed tomography algorithms

Xiong Wan; Yiqing Gao; Qing Wang; Shuping Le; Shenglin Yu

doi:10.1117/1.1595104

1 September 2003 Limited-angle optical computed tomography algorithms

Xiong Wan, Yiqing Gao, Qing Wang, Shuping Le, Shenglin Yu

Optical Engineering, Vol. 42, Issue 9, (September 2003). https://doi.org/10.1117/1.1595104

Optical computed tomography (OCT) is often used for measuring thermophysical parameters. Unfortunately, viewing access in many tomographic experiments, such as in plasma physics, is extremely limited, which leads to a highly undetermined inversion problem. Four major approaches to this problem are compared: a novel algorithm based on maximum entropy (ME), and three traditional algorithms, namely the simultaneous iterative reconstruction technique (SIRT), algebraic reconstruction technique (ART), and multiplicative algebraic reconstruction technique (MART). A novel basis function was adopted to improve the performance of SIRT, ART, and MART. These algorithms were used to reconstruct phantom data with realistic levels of noise from a number of different imaging geometries. The phantoms, the imaging geometries, and the noise were chosen to simulate conditions encountered in typical OCT measurement. In most cases, the ME and MART algorithms give better reconstruction results than the other two algorithms for the situations studied here.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Xiong Wan, Yiqing Gao, Qing Wang, Shuping Le, and Shenglin Yu "Limited-angle optical computed tomography algorithms," Optical Engineering 42(9), (1 September 2003). https://doi.org/10.1117/1.1595104

Published: 1 September 2003

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