使用线性转换的基于反射率的光谱指数,对番茄溶性固体含量进行了新的估计
Naisen Liu1, Yuan Fang1, Yongzhen Zhao1
1School of Life Science, Huaiyin Normal University, Huai'an, China.
Frontiers in plant science
|February 23, 2026
概括
一种使用遗传算法 (GA) 的新型高光谱模型改善了多种品种番茄的可溶性固体含量 (SSC) 预测. 这种方法提高了模型的稳定性和可转移性,用于非破坏性质量评估.
科学领域:
- 农业科学 农业科学
- 频谱学是一种光谱学.
- 化学测量 化学测量 化学测量
背景情况:
- 对于番茄质量评估而言,溶性固体含量 (SSC) 的非破坏性估计至关重要.
- 现有的光谱模型往往缺乏跨不同番茄品种的概括性.
- 开发各种番茄类型的强大模型仍然是一个重大挑战.
研究的目的:
- 开发一种强大的可溶性固体含量 (SSC) 预测框架,用于使用高光谱反射率和遗传算法 (GA) 的多种番茄类型.
- 提高用于非破坏性番茄质量评估的光谱模型的概括能力和可转移性.
主要方法:
- 收集了来自13种番茄品种的152种水果的超光谱反射和SSC数据.
- 开发了新的线性变换光谱指数 (ltDSI, ltNDSI, ltRSI) 用于光谱数据分析.
- 使用遗传算法 (GA) 来优化波长组合和光谱指数的转换系数.
主要成果:
- 用GA优化的光谱指数表现优于传统指数和全频谱模型.
- 拟议的模型表明对番茄类型的敏感性降低,在验证数据集中达到R2 ≈ 0.80,RMSE ≈ 0.6 °Brix,MRE ≈ 10%.
- 开发的框架显示了改进的模型稳定性和可转移性.
结论:
- 对光谱指数结构和参数的联合优化有效地提高了SSC预测的模型稳定性和可转移性.
- 拟议的框架为番茄的非破坏性SSC评估提供了一个可扩展的解决方案.
- 为开发现场部署的光谱传感工具提供实用指导,用于跨品种的水果质量表型化.
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