The Development of an Alerting System for Spread of Brown planthoppers in Paddy Fields Using Unmanned Aerial Vehicle and Image Processing Technique

摘要

This research aimed to analyze and design an alerting system for spread of Brown planthoppers in paddy using unmanned aerial vehicle and image processing technique. The research included reviewing and collecting data, designing unmanned aerial vehicle control system, testing flying system, designing color detection and comparing efficiency. To design color detection, image processing technique was employed. The research procedures consisted of receiving data, using 10 fps of an image of 640×480 pixel in a form of RGB and converting an image to HSV to adjust color values. The image was delivered to an inspection of images detected using Threshold. It could be summarized that the system could detect rice pests. Of the 50 tests, it was found that the difference of brown color was at 1.40%, of white color was at 0.73 % and of yellow color was at 0.00% in the paddy fields with rice pests. In addition, the error of brown color was at 0.01%, of white color was at 0.05% and of yellow color was at 0.00% in the paddy fields without rice pests.