title: An integrated fiber-optic probe combined with support vector regression for fast estimation of optical properties of turbid media.
abstract: A fiber-optic probe system was developed to estimate the optical properties of turbid media based on spatially resolved diffuse reflectance. Because of the limitations in numerical calculation of radiative transfer equation (RTE), diffusion approximation (DA) and Monte Carlo simulations (MC), support vector regression (SVR) was introduced to model the relationship between diffuse reflectance values and optical properties. The SVR models of four collection fibers were trained by phantoms in calibration set with a wide range of optical properties which represented products of different applications, then the optical properties of phantoms in prediction set were predicted after an optimal searching on SVR models. The results indicated that the SVR model was capable of describing the relationship with little deviation in forward validation. The correlation coefficient (R) of reduced scattering coefficient μ'(s) and absorption coefficient μ(a) in the prediction set were 0.9907 and 0.9980, respectively. The root mean square errors of prediction (RMSEP) of μ'(s) and μ(a) in inverse validation were 0.411 cm(-1) and 0.338 cm(-1), respectively. The results indicated that the integrated fiber-optic probe system combined with SVR model were suitable for fast and accurate estimation of optical properties of turbid media based on spatially resolved diffuse reflectance.
authors.affiliation: College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; College of Information and Electronic Engineering, ZheJiang University of Science and Technology, Liuhe Road, Hangzhou 310023, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China. Electronic address: fuxp@zju.edu.cn.
authors.forename: Xiaping
authors.initials: X
authors.lastname: Fu
authors.affiliation: College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
authors.forename: Yibin
authors.initials: Y
authors.lastname: Ying
authors.affiliation: College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
authors.forename: Zhenhuan
authors.initials: Z
authors.lastname: Fang
mesh_terms: D005336:Fiber Optic Technology; D008962:Models, Theoretical; D009010:Monte Carlo Method; D009391:Nephelometry and Turbidimetry / Q000295:instrumentation*; D019047:Phantoms, Imaging; D060388:Support Vector Machine
keywords: Diffuse reflectance; Fiber-optic probe system; Optical properties; Support vector regression; Turbid media