Temperature-stabilized laser-based sensors for accurate plant discrimination

Document Type

Journal Article

Publication Title

Computers and Electronics in Agriculture

Publisher

Elsevier

School

Electron Science Research Institute

RAS ID

24797

Comments

Askraba, S., Paap, A., Alameh, K., Rowe, J., & Miller, C. (2017). Temperature-stabilized laser-based sensors for accurate plant discrimination. Computers and Electronics in Agriculture, 140, 317-326. https://doi.org/10.1016/j.compag.2017.06.017

Abstract

We propose the use of temperature-stabilized lasers to improve the accuracy of a spectral-reflectance-based plant discrimination sensor for use in selective herbicide spraying systems. The discrimination of Canola from Wild-radish is based on Normalized Difference Vegetation Index (NDVI) measurements at two different laser wavelengths. Indoor experimental results show that the relative discrimination accuracy for a temperature non-stabilized sensor drops to 12.5% when the laser temperature varies between 16 °C and 34 °C. Experimental results also show that by controlling the temperature of the laser diodes, canola crops can be discriminated from wild radish weeds with accuracy as high as 90%.

DOI

10.1016/j.compag.2017.06.017

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