Multispectral imaging for zeaxanthin content in the exocarp of chili peppers
Wei Liang, Wei Gao, Xingna Lv, Jinxiang Zhao, Xuechun Tian, Shuaitao Di, Qiang Li, Dongfang Zhang, ShuangXia Luo, XuePing Chen · 2026
Read Multispectral imaging for zeaxanthin content in the exocarp of chili peppers by Wei Liang, Wei Gao, Xingna Lv, Jinxiang Zhao, Xuechun Tian, Shuaitao Di, Qiang Li, Dongfang Zhang, ShuangXia Luo, XuePing Chen (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13213780.txt.
Description
Zeaxanthin, a pigment with health value, sits in the skin of chili peppers, but measuring it usually means slow lab chemistry. Liang and co-authors build a camera-based method: multispectral imaging reads the light bouncing off the pepper skin, and a small neural network turns that signal into a pigment estimate. Among four learning methods, the network did best alone.
Adding two lab measures, capsanthin and total carotenoid content, pushed accuracy much higher, with fit values above 0.92. A stripped-down version using a simple red index instead of one lab measure still scored well. The authors offer the method for fast, high-volume screening of pepper quality.
Catalog record
| CREATOR | Wei Liang, Wei Gao, Xingna Lv, Jinxiang Zhao, Xuechun Tian, Shuaitao Di, Qiang Li, Dongfang Zhang, ShuangXia Luo, XuePing Chen |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 44 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |