Research on Fast Extraction Method of Soybean Crop Coverage Based on Images
In this study,the typical soybean production area in Northeast China was selected as the experimental area. The RGB threshold method and vegetation index (NDI,VEG,CIVE,EXG,EXR,EXGR and COM) were used to extract the vegetation cover-age from the images acquired at flowering and maturity stages,and the applicability of each extraction method was evaluated. It was shown that the accuracy of the nine extraction methods in this study was higher than 89％. For the growth period of dark green soybean leaves,the nine extraction methods had high accuracy (more than 94％),while EXG,EXRG,CIVE,VEG and COM possessed bet-ter versatility compared with the other methods for the mature stage of yellow green leaves.
NETL
NSTL
万方数据
