改进了多阶段的米地面生物质估计,使用来自无人机遥感的波形纹理融合植被指数
Jinpeng Li1,2, Qiang Cao1,2, Shuaipeng Wang1,2
1College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, China.
Plants (Basel, Switzerland)
|September 27, 2025
概括
离散波波变形纹理 (WTs) 改善了水地表生物质 (AGB) 的估计,特别是与植被指数 (VIs) 结合使用时. 这种综合方法提供了一种更准确,更稳定的方法来监测跨增长阶段的AGB.
科学领域:
- 农业遥感 农业遥感
- 生物质估计生物质估计
- 信号处理 信号处理
背景情况:
- 传统的植被指数 (VIs) 用于估计地表生物质 (AGB) 在密集的树冠下和,并很难检测垂直生长.
- 离散波纹转换 (DWT) 提供了提取树冠结构特征的潜力,但在作物生物质监测方面尚未充分探索.
研究的目的:
- 评估基于离散波纹转换 (DWT) 的纹理,用于在多个生长阶段估计大米AGB.
- 评估是否将基于DWT的纹理指数 (WTI) 与VI结合起来可以提高AGB估计的准确性.
主要方法:
- 在无人机多光谱成像下,对四种水品种和五种处理进行了实地实验.
- 提取VI和波纹纹理 (WTs),构建新的WTI.
- 使用相关性分析,回归和随机森林 (RF) 的AGB估计模型的开发.
主要成果:
- 波形纹理指数 (WTI) 与大米AGB的相关性高于单个WTs.
- 射频模型表现出卓越的性能;WTI在标题后和所有阶段的AGB估计中表现出色.
- 与VIs相比,将WTI与VI相结合显著改善了AGB预测准确度 (R2增加了10-15%) 和减少错误 (RMSE减少了13-17%) 仅与VI相比.
结论:
- 基于DWT的纹理有效地提高了高精度大米AGB估计.
- 将WTI与VI集成,为在各种条件下进行大米AGB预测提供了一种经济,高效,准确和稳定的方法.
相关概念视频
02:16Light Acquisition
9.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.4K
01:13Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
1.2K
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...
1.2K