Original paper: Real-time image processing for crop/weed discrimination in maize fields

Authors:
Xavier P. Burgos-Artizzu;Angela Ribeiro;Maria Guijarro;Gonzalo Pajares
Affiliations:
Artificial Perception Group (GPA), Centro de Automática y Robótica UPM-CSIC, Spanish National Research Council, Madrid, Spain;Artificial Perception Group (GPA), Centro de Automática y Robótica UPM-CSIC, Spanish National Research Council, Madrid, Spain;Departamento de Ingeniería del Software e Inteligencia Artificial, Universidad Complutense de Madrid (UCM), Spain;Departamento de Ingeniería del Software e Inteligencia Artificial, Universidad Complutense de Madrid (UCM), Spain
Venue:
Computers and Electronics in Agriculture
Year:
2011

Citing 13
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Abstract

This paper presents a computer vision system that successfully discriminates between weed patches and crop rows under uncontrolled lighting in real-time. The system consists of two independent subsystems, a fast image processing delivering results in real-time (Fast Image Processing, FIP), and a slower and more accurate processing (Robust Crop Row Detection, RCRD) that is used to correct the first subsystem's mistakes. This combination produces a system that achieves very good results under a wide variety of conditions. Tested on several maize videos taken of different fields and during different years, the system successfully detects an average of 95% of weeds and 80% of crops under different illumination, soil humidity and weed/crop growth conditions. Moreover, the system has been shown to produce acceptable results even under very difficult conditions, such as in the presence of dramatic sowing errors or abrupt camera movements. The computer vision system has been developed for integration into a treatment system because the ideal setup for any weed sprayer system would include a tool that could provide information on the weeds and crops present at each point in real-time, while the tractor mounting the spraying bar is moving.