Abstract
The propagation of light in stone fruit tissue was modeled using the Monte Carlo (MC) method. Peaches were used as the representative model of stone fruits. The effects of the fruit core and the skin on light transport features in the peaches were assessed. It is suggested that the skin, flesh and core should be separately considered with different parameters to accurately simulate light propagation in intact stone fruit. The detection efficiency was evaluated by the percentage of effective photons and the detection sensitivity of the flesh tissue. The fruit skin decreases the detection efficiency, especially in the region close to the incident point. The choices of the source-detector distance, detection angle and source intensity were discussed. Accurate MC simulations may result in better insight into light propagation in stone fruit and aid in achieving the optimal fruit quality inspection without extensive experimental measurements.
Highlights
Fruit quality inspection techniques play a very important role in the production and consumption of fruits
The spatially resolved diffuse reflectance measurement system used in this work consisted of a light source, a sensing fiber-optic probe, a spectrometer, a micro-displacement platform, and a computer used for data acquisition and measurement control
The results indicate that a large detection angle near 80~90 degrees should be avoided to improve the detection efficiency and sensitivity of diffuse reflectance spectral measurement
Summary
Fruit quality inspection techniques play a very important role in the production and consumption of fruits. As visible-near infrared (vis-NIR) spectroscopy measurements can be carried out in a non-destructive way, their potential for fruit grading has been investigated by many research groups worldwide [1]. The light-based techniques of fruit quality measurement are challenging, and their accuracy and robustness are often limited. Light interaction with fruit tissue is a complicated phenomenon involving both absorption and scattering. While absorption in the vis-NIR range is related to some important chemical quality attributes, such as the total sugar content, scattering is related to the physical properties of the fruit (e.g., density, particle size, and microstructure) [2]. There is a growing demand for accurate and fast models to theoretically predict the light distribution in fruits that have given optical properties and to inversely deduce the optical properties from the measurable quantities. The radiation transport equation (RTE) is generally used to describe the light transport in a turbid media
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
