An experimental comparison for the identification of weeds in sunflower crops via unmanned aerial vehicles and object-based analysis

Research areas:

• Methodology - Machine learning

Year:

2015

Type of Publication:

In Proceedings

Authors:

• Pérez-Ortiz, María
• Gutiérrez, Pedro Antonio
• Peña, J. M.
• Torres-Sánchez, J.
• Hervás-Martínez, César
• Granados, F. López

Volume:

9094

Book title:

13th International Work-Conference on Artificial Neural Networks (IWANN 2015)

Series:

Lecture Notes in Computer Science

Pages:

252-262

Organization:

Palma de Mallorca (Spain)

Month:

10th-12th June

ISBN:

978-3-319-19257-4

Abstract:

Weed control in precision agriculture refers to the design of site-specific control treatments according to weed coverage and it is very useful to minimise costs and environmental risks. The crucial component is to provide precise and timely weed maps via weed monitoring. This paper compares different approaches for weed mapping using imagery from Unmanned Aerial Vehicles in sunflower crops. We explore differ- ent alternatives, such as object-based analysis, which is a strategy that is spreading rapidly in the field of remote sensing. The usefulness of these approaches is tested by considering support vector machines, one of the most popular machine learning classifiers. The results show that the object-based analysis is more promising than the pixel-based one and demonstrate that both the features related to vegetation indexes and those related to the shape of the objects are meaningful for the problem.