Optical reflectance sensor for detecting plants

Geoffrey J. Shropshire, Kenneth Von Bargen, David Mortensen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)222-235
Number of pages14
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1991

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


Dive into the research topics of 'Optical reflectance sensor for detecting plants'. Together they form a unique fingerprint.

Cite this