Optical characterization of liquid phantoms in 500–1000 nm using an improved single integrating sphere system

Sun, Xiaolin; Sun, Zhizhong; Zhou, Tongtong; Hu, Dong; Sun, Tong; Yang, Zidong; Zhou, Guoquan

doi:10.1016/j.infrared.2022.104386

Cited by 3 publications

(1 citation statement)

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“…In this method, Monte Carlo (MC), which has been widely applied to simulate light propagation in single-and multiple-layered biological tissues, was employed for the simulation experiment [8,29,34]. Optical property parameters ( 𝜇 𝑎 , 𝜇′ 𝑠 ) of apple tissues at the six wavelengths were measured by our integrating sphere system [35], which were taken as the inputs in the simulation.…”

Section: Experiments 2: Investigating Light Penetration Depthmentioning

confidence: 99%

Analysis of Light Penetration Depth in Apple Tissues by Depth-Resolved Spatial-Frequency Domain Imaging

Zhou

Qiu

et al. 2023

Foods

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Spatial-frequency domain imaging (SFDI) has been developed as an emerging modality for detecting early-stage bruises of fruits, such as apples, due to its unique advantage of a depth-resolved imaging feature. This paper presents theoretical and experimental analyses to determine the light penetration depth in apple tissues under spatially modulated illumination. Simulation and practical experiments were then carried out to explore the maximum light penetration depths in ‘Golden Delicious’ apples. Then, apple experiments for early-stage bruise detection using the estimated reduced scattering coefficient mapping were conducted to validate the results of light penetration depths. The results showed that the simulations produced comparable or a little larger light penetration depth in apple tissues (~2.2 mm) than the practical experiment (~1.8 mm or ~2.3 mm). Apple peel further decreased the light penetration depth due to the high absorption properties of pigment contents. Apple bruises located beneath the surface peel with the depth of about 0–1.2 mm could be effectively detected by the SFDI technique. This study, to our knowledge, made the first effort to investigate the light penetration depth in apple tissues by SFDI, which would provide useful information for enhanced detection of early-stage apple bruising by selecting the appropriate spatial frequency.

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Section: Experiments 2: Investigating Light Penetration Depthmentioning

confidence: 99%

Analysis of Light Penetration Depth in Apple Tissues by Depth-Resolved Spatial-Frequency Domain Imaging

Zhou

Qiu

et al. 2023

Foods

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show abstract

Internal quality evaluation of ‘Fuji’ apples during storage based on bulk optical properties or diffuse reflection and transmission spectra

Hu,

Guo,

Sun

et al. 2024

LWT

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Analysis of light penetration depth in apple tissues by depth- resolved spatial-frequency domain imaging

Zhou

Qiu

et al. 2022

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Spatial-frequency domain imaging (SFDI) has been developed as an emerging modality for detecting early-stage bruises of fruits, like apples, due to its unique advantage of depth-resolved imaging feature, in comparison with the conventional imaging techniques under uniform or diffuse illumination. This paper presents theoretical and experimental analyses to determine the light penetration depth in apple tissues under spatially modulated illumination. First, light penetrating capacity of the demodulated direct component and amplitude component images was investigated to prove the performance of the constructed SFDI system. Simulation and practical experiments were then carried out to explore the maximum light penetration depths in ‘Golden Delicious’ apples, in terms of two critical parameters, i.e., image contrast, and ratio of peak-to-valley intensity. Finally, apple experiment for early-stage bruise detection using the estimated reduced scattering coefficient mapping was conducted to validate the results of light penetration depths. The results showed that the simulations produced comparable or a little larger light penetration depth in apple tissues (~ 2.2 mm) than the practical experiment (~ 1.8 mm, or ~ 2.3 mm). Apple peel further decreased the light penetration depth due to the high absorption properties of pigment contents. The apple bruise, located beneath the surface peel with the depth of about 0-1.2 mm, could be effectively detected by the SFDI technique. This study, to our knowledge, made the first effort to investigate the light penetration depth in apple tissues by SFDI, which would provide useful information for enhanced detection of early-stage apple bruising by selecting appropriate spatial frequency.

show abstract

Optical characterization of liquid phantoms in 500–1000 nm using an improved single integrating sphere system

Cited by 3 publications

References 50 publications

Analysis of Light Penetration Depth in Apple Tissues by Depth-Resolved Spatial-Frequency Domain Imaging

Analysis of Light Penetration Depth in Apple Tissues by Depth-Resolved Spatial-Frequency Domain Imaging

Internal quality evaluation of ‘Fuji’ apples during storage based on bulk optical properties or diffuse reflection and transmission spectra

Analysis of light penetration depth in apple tissues by depth- resolved spatial-frequency domain imaging

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