Optical reflectance sensor for detecting plants

Geoffrey J. Shropshire; Kenneth Von Bargen; David A. Mortensen

doi:10.1117/12.25093

1 February 1991 Optical reflectance sensor for detecting plants

Geoffrey J. Shropshire, Kenneth Von Bargen, David A. Mortensen

Proceedings Volume 1379, Optics in Agriculture; (1991) https://doi.org/10.1117/12.25093
Event: Advances in Intelligent Robotics Systems, 1990, Boston, MA, United States

Abstract

The reflectance ratio meter, an optical device for detecting weeds by measuring the ratio of reflected red and near-infrared light, is described. Experiments were conducted to evaluate the accuracy of the sensor in detecting weeds in the inter-row of growing soybeans and to characterize its sensitivity. Several methods for interpreting the signal were evaluated. The reflectance ratio meter is shown to have potential for estimating local weed populations.

Citation Download Citation

Geoffrey J. Shropshire, Kenneth Von Bargen, and David A. Mortensen "Optical reflectance sensor for detecting plants", Proc. SPIE 1379, Optics in Agriculture, (1 February 1991); https://doi.org/10.1117/12.25093

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