Precision agriculture implementation method by UAV systems and artificial intelligence image processing technologies

A precision agriculture implementation method by UAV systems and artificial intelligence image processing technologies, comprising the steps of:

• (a) providing an unmanned aerial vehicle, a wireless communication device and a central control unit, wherein the unmanned aerial vehicle is installed with a spray device for spraying a water solution, a salt solution, a fertilizer solution, and/or a pesticide solution, and a multispectral camera;
• (b) dividing a farming area planted with a plurality of strains of plants into an array of a plurality of blocks, wherein each block sets a plurality of navigation parameters including a center coordinate, and the central control unit set a flight path for controlling the unmanned aerial vehicle according to the navigation parameters of the plurality of blocks;
• (c) controlling the unmanned aerial vehicle by the central control unit according to the flight path to sequentially fly over each block of the farming area, and controlling the multispectral camera to capture a multispectral image of each block which at least includes a green light, a red light, a red-edge and a near infrared light;
• (d) transmitting the navigation parameters and the multispectral image of each block to the central control unit through the wireless communication device by the unmanned aerial vehicle;
• (e) processing the multispectral image by the central control unit, calculating a projected leaf area index (PLAI) and a normalized difference vegetation index (NDVI) by the multispectral image, and then setting a spray control mode of the spray device corresponding to the block according to the projected leaf area index and the normalized difference vegetation index (NDVI);
• wherein the projected leaf area index=the total projected leaf area of the plant/the plant area;
• the normalized difference vegetation index (NDVI)=(near infrared light reflection amount ρNIR−red light reflection amount ρRED)/(near infrared light reflection amount ρNIR+red light reflection amount ρRED);
• and
• (f) controlling the unmanned aerial vehicle by the central control unit to fly over the farming area sequentially according to the flight path and controlling the spray device to spray the water solution, salt solution, fertilizer solution, and/or pesticide solution to the block according to the spray control mode.