Abstract
A new method of extracting broad-leaf weeds from grassland, Variance Extraction Method (VEM), has been proposed. The method applies texture analysis to weed extraction. Statistical variance was found suitable as a feature parameter of the texture analysis. Only weeds can be extracted because variance calculated on the broad leaves of the weeds is small and it is large in the grassland region. In this paper, characteristics of the proposed method are closely investigated and a conditional equation of extraction is presented for the design of weed system.
