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Path recognition of UAV based on improved super-greening algorithm and design of adaptive Trichogramma pill dispenser

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Abstract

Aiming at the problem that the traditional Trichogramma pill dispenser is inaccurate due to the change of wind speed during operation, and the traditional algorithm cannot meet the accuracy and applicability of the Unmanned Aerial Vehicle (UAV) path identification and the delivery process, this paper proposes path recognition of UAV based on an improved super-greening algorithm and design of adaptive Trichogramma pill dispenser. The improved super-greening algorithm and the maximum inter-class variance method are used to automatically obtain the green feature binary image, and the morphological processing is used to improve the image quality; the crop location point extraction algorithm based on edge detection is used to extract the feature points, and the feature points are used to fit the navigation line. The wind pressure sensor is used to obtain the voltage signal, and the measured voltage is output after being processed by the airborne 5G board, and the motor speed is controlled according to the adaptive PID control algorithm. The simulation results show that the improved super-greening algorithm more truly reflects the green content in the image, which makes the image extraction more accurate; the crop positioning point extraction algorithm of edge detection is 3.4 and 3.7 smaller than the vertical projection algorithm in average error and positioning error respectively; compared with the vertical projection method, the edge detection method reduces the time consumption by 150 ms and increases the accuracy by 8%; adaptive PID control algorithm compared with the traditional PID control algorithm, the rise time, adjustment time and overshoot are 1.5%, 4.8% and 11.5% smaller respectively. The research results can provide research ideas for the application of UAV precise delivery of Trichogramma bee pills technology in agriculture.

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Correspondence to Shengzheng Ji.

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Ji, S., Yao, C. & Feng, Z. Path recognition of UAV based on improved super-greening algorithm and design of adaptive Trichogramma pill dispenser. Multimed Tools Appl 82, 17301–17320 (2023). https://doi.org/10.1007/s11042-022-14209-9

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