Design of an optical weed sensor using plant spectral characteristics

Ning Wang; Naiqian Zhang; Dallas E. Peterson; Floyd E. Dowell

doi:10.1117/12.411740

29 December 2000 Design of an optical weed sensor using plant spectral characteristics

Ning Wang, Naiqian Zhang, Dallas E. Peterson, Floyd E. Dowell

Proceedings Volume 4203, Biological Quality and Precision Agriculture II; (2000) https://doi.org/10.1117/12.411740
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States

Abstract

A spectral-based weed sensor was designed and tested in laboratory and in field. The effective sensing area of the sensor was determined by measuring sensor responses when weeds were placed at different grid points in front of the sensor. When multiple weeds shared the effective sensing area with soil, the weed classification rate was above 70%. The classification rate was below 50% for single weeds. Under field conditions, the weed classification rate reach 87%. Variations in sunlight did not affect the performance of the sensor significantly. The effect of shadows on the performance was significant.

Citation Download Citation

Ning Wang, Naiqian Zhang, Dallas E. Peterson, and Floyd E. Dowell "Design of an optical weed sensor using plant spectral characteristics", Proc. SPIE 4203, Biological Quality and Precision Agriculture II, (29 December 2000); https://doi.org/10.1117/12.411740

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