首页|Detection of early stage bruise in apples using optical property mapping
Detection of early stage bruise in apples using optical property mapping
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier B.V.Apple bruises, which are mainly caused by external forces during picking, transportation and marketing, could cause significant economic losses in postharvest storage. Considering the short time window (1–2 h) between bruises occurring and apples are stored, there needs a technique that can identify the invisible early stage bruises (defined as within 1–2 h after occurring), which cannot be completed by the conventional uniform imaging techniques. This study proposed and validated a new means, i.e., optical property mapping, for detecting apple bruises at the early stage. SFDI system was firstly validated, with the results showing that accuracy for measuring μa and μs' were within 8.71 % and 4.93 %, respectively. Optical property mappings of non-bruised and early stage bruised apples were extracted by the methods of three-phase coupled with curve fitting (TP-CF), and single snapshot coupled with look-up table (SS-LUT). The extracted μs' mappings were capable of detecting early stage bruises, and the TP-CF approach resulted into better performance than SS-LUT, but at the expense of lowering efficiency about 14,000 times. Denoising algorithms significantly enhanced the visual effect of bruise detection by minimizing the influence of apple peel spots. The approach proposed in this study is promising for detecting early stage bruising for apple industry.
NSTL
Elsevier
