This research was aimed at determining the effect of optical variables for a single integrating sphere system, coupled with the inverse adding-doubling method, on estimating the reduced scattering coefficient ( μ s ′ ) of turbid media. Integrating sphere measurements were performed on a total of 36 liquid samples and two solid samples. The results demonstrated that the system had good accuracy, with average errors for estimating absorption coefficient μa (pure absorption) and μ s ′ (pure scattering) of liquid samples being 15.0% and 4.7% over 550–900 nm, compared with the collimated transmittance and empirical equation, respectively. The system also had good reproducibility for μa and μ s ′ , with the coefficients of variation lower than 4%. Sensitivity analysis revealed that the detectable values of μa and μ s ′ were around 0.02 cm−1 and 4.5 cm−1. Entrance and detector port diameters, standard reflectivity and anisotropy factor had a negligible effect on estimating μ s ′ ( μ s ′ (2.8%–35.3%). Hence these variables should be carefully chosen or accurately measured before optical property measurements are carried out. Application examples of the μ s ′ estimation for apple skin and flesh further validated the system performance, indicating that appropriate selection of optical variables could improve the estimation of μ s ′ .

中文翻译：

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单积分球系统中光学变量对混浊介质散射特性估计的影响

本研究旨在确定单个积分球系统的光学变量与逆加倍法相结合，对估计混浊介质的减少散射系数 (μ s ' ) 的影响。对总共 36 个液体样品和两个固体样品进行了积分球测量。结果表明，该系统具有良好的准确性，与准直透射率相比，估计液体样品的吸收系数 μa（纯吸收）和 μs ′（纯散射）的平均误差在 550-900 nm 范围内分别为 15.0% 和 4.7%和经验方程，分别。该系统对 μa 和 μ s ' 也具有良好的重现性，变异系数低于 4%。灵敏度分析显示 μa 和 μ s ' 的可检测值约为 0.02 cm-1 和 4.5 cm-1。