Identification of weed species using dimensionless analysis of leaves

摘要

To identify weed species in digital images, a dimensionless analysis of leaves was tested at two locations in the Czech Republic with different soil and climatic conditions (Zabeice and Brevenec) in 1999 and 2000. Differences were determined among the following six weed species: Agropyron repens (AGRRE), Chenopodium album (CHEAL), Galinsoga parviflora (GALPA), Amaranthus retroflexus (AMARE), Malva neglecta (MALNE), and Convolvulus arvensis (CONAR). Discrimination was carried out according to the following leaf features: compactness, roundness, elongation, roughness and aspect (ratio of ellipse length and width at the equivalent area). it was possible to distinguish significantly the presented weed species from each other. There was the only case (location Zabeice in 2000) when significance of differences between the species GALPA and CONAR could not be assessed.