Grading Method of Crop Disease Based on Image Processing

摘要: At present, in the crop disease harm degree is graded mainly by measure with eye or paper cut primarily, which greatly influenced subjective factors, and results obvious error. For improvement on identification precision of disease, this developed a new grading method based computer image processing. Image preprocessing, segmentation statistical calculation were applied effectively study. According to classification standard, was determined computing proportion sickness spot area normal leaf. The experiment indicated that accuracy improved, time costs reduced manual evaluation, providing accurate data for study crop’s other aspects has broad prospect application.