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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

Zhen Li

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Open access Sep 2026

A camera calibration method driven by unmanned aerial vehicles and high-precision estimation of maize SPAD values under adverse conditions

Rapid and non-destructive monitoring of maize SPAD is important for precision water and nitrogen management in arid irrigation areas. This study developed a UAV–smartphone cross-device calibration framework for SPAD estimation using UAV multispectral imagery, smartphone RGB images, and ground-measured SPAD data collect...

Jian-Wen Yan, Shi-Long Miao, Xianyue Li et al. · 0 citations

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