Special Section on Optical Computational Imaging

Comprehensive study of methods for automatic choice of regularization parameter for diffuse optical tomography

[+] Author Affiliations
Zhonghua Sun, Yaqi Wang, Kebin Jia, Jinchao Feng

Beijing University of Technology, Beijing Advanced Innovation Center for Future Internet Technology, Chaoyang District, Beijing 100124, China

Beijing Laboratory of Advanced Information Networks, Chaoyang District, Beijing 100124, China

Beijing University of Technology, College of Electronic Information and Control Engineering, Chaoyang District, Beijing 100124, China

Opt. Eng. 56(4), 041310 (Dec 23, 2016). doi:10.1117/1.OE.56.4.041310
History: Received October 10, 2016; Accepted December 5, 2016
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Abstract.  The image reconstruction in diffuse optical tomography (DOT) is a typical inverse problem; therefore, regularization techniques are essential to obtain a reliable solution. The most general form of regularization is Tikhonov regularization. With any Tikhonov regularized reconstruction algorithm, one of the crucial issues is the selection of the regularization parameter that controls the trade-off between the regularized solution and fidelity to the given sets of data. Automatic methods such as L-curve, generalized cross-validation, minimal residual method, projection error method, and model function method have been introduced to select the regularization parameter over the years. However, little investigation of comparison of all the algorithms has been reported in DOT. The performance of the five methods for choosing regularization parameter is comprehensively compared, and advantages and limitations are discussed.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Zhonghua Sun ; Yaqi Wang ; Kebin Jia and Jinchao Feng
"Comprehensive study of methods for automatic choice of regularization parameter for diffuse optical tomography", Opt. Eng. 56(4), 041310 (Dec 23, 2016). ; http://dx.doi.org/10.1117/1.OE.56.4.041310


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