Non-iterative model based image reconstruction of diffuse optical tomography based on de and RTE in quality control of agricultural product studies
Nadhira V.a, Juliastuti E.a, Garnadi A.D.b, Kurniadi D.a, Hoshi Y.c
a Instrumentation and Control Research Group, Faculty of Industrial Technology, Institute Technology of Bandung, Bandung, 40132, Indonesia
b Departement of Mathematics, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Kampus Darmaga, Bogor, 16680, Indonesia
c Department of Biomedical Optics, Medical Photonics Research Center, Hamamatsu University, School of Medicine, Higashi-ku, Hamamatsu city, Shizuoka, 431-3192, Japan
Abstract
© Published under licence by IOP Publishing Ltd.In a previous study, we developed the non-iterative image reconstruction based on diffusion equation. Within this research, we applied the same non-iterative algorithm scheme using radiative transfer equation. Basically, the non-iterative image reconstruction is a development of model based image reconstruction that implemented truncated singular value decomposition and L-curve analysis to solve the ill-posed problem. This algorithm reduces the computation time to reconstruct the cross-sectional area. As part of continuous development on agricultural application, optical tomography based quality control is offered. An experiment was conducted on potato to evaluate these two non-iterative algorithms. The object was illuminated by the near infrared source from 8 positions on the object boundary. In this experiment, we vary the position and the amount of epoxy on the object then we analyze the residual value between measurement and reconstructed boundary data. The reconstructions were performed in continuous-wave domain. Furthermore, we compared the residual value from diffuse optical tomography using diffusion equation and radiative transfer equation. The result of this study indicates that these algorithms are promising to detect the presence of epoxy on potato which is useful for quality control of agricultural products.
Author keywords
Continuous development,Cross sectional area,Diffuse optical tomography,Diffusion equations,Ill posed problem,Non-iterative algorithms,Radiative transfer equations,Truncated singular value decomposition