Abstract

The environment of rice plant-hoppers in paddy fields is complex and variable. It is challenging to remove the background from the plant-hopper by general segmentation methods without a strong generalization. Park photographed brown plant-hoppers in paddy fields with a camera and used some image processing methods to count N. lugens on rice plants for the estimation of plant-hopper density. They set the threshold of plant-hopper area in the binary images to determine whether the region contained a plant-hopper. This method hardly removes noise detections similar to the plant-hoppers.