Unmanned aerial vehicle lai inversion method and device based on high-precision canopy positioning
By using a handheld RTK to record the location of LAI measurement points on the ground canopy analyzer and construct the view buffer, combined with vegetation index features, the problem of inaccurate spatial correspondence in LAI inversion of UAV imagery was solved, achieving pixel-by-pixel LAI fine inversion and improving the reliability and spatial resolution of the inversion model.
CN122415698APending Publication Date: 2026-07-17INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
Smart Images
Figure CN122415698A_ABST
Abstract
本发明公开了基于高精度冠层定位的无人机LAI反演方法，包括：获取研究区域无人机影像，采集地面LAI实测值，并通过手持RTK测量仪记录LAI测点的坐标；以LAI测点的坐标为圆心坐标，从正射影像中提取视域缓冲区的像素点，并由视域缓冲区内的像素点的无人机影像特征提取LAI 测点预选特征值，构建LAI实测值与LAI 测点预选特征值之间的高精度空间匹配的样本集；基于样本集建立确立目标反演模型，并将目标反演模型应用于研究区域，进行逐像素计算LAI值，生成像素级的LAI反演图。本发明能够提高地面样本与无人机影像的空间配准精度，降低样本错配误差，并获得连续空间上的像素级LAI分布结果。
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