Color indices for weed identification under various soil, residue, and lighting conditions

D. M. Woebbecke, G. E. Meyer, K. Von Bargen, D. A. Mortensen

Research output: Contribution to journalArticle

528 Citations (Scopus)

Abstract

Color slide images of weeds among various soils and residues were digitized and analyzed for red, green, and blue (RGB) color content. Red, green, and blue chromatic coordinates (rgb) of plants were very different from those of background soils and residue. To distinguish living plant material from a nonplant background, several indices of chromatic coordinates were studied, tested, and were successful in identifying weeds. The indices included r-g, g-b, (g-b)||r-g|, and 2g-r-b. A modified hue was also used to distinguish weeds from non-plant surfaces. The modified hue, 2g-r-b index, and the green chromatic coordinate distinguished weeds from a nonplant background (0.05 level of significance) better than other indices. However, the modified hue was the most computationally intense. These indices worked well for both nonshaded and shaded sunlit conditions. These indices could be used for sensor design for detecting weeds for spot spraying control.

Original languageEnglish (US)
Pages (from-to)259-269
Number of pages11
JournalTransactions of the American Society of Agricultural Engineers
Volume38
Issue number1
StatePublished - Jan 1 1995

Fingerprint

Lighting
weed
lighting
Soil
Color
weeds
Soils
color
Spraying
soil
Plant Weeds
Sensors
spraying
sensors (equipment)
background level
index
sensor

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

Woebbecke, D. M. ; Meyer, G. E. ; Von Bargen, K. ; Mortensen, D. A. / Color indices for weed identification under various soil, residue, and lighting conditions. In: Transactions of the American Society of Agricultural Engineers. 1995 ; Vol. 38, No. 1. pp. 259-269.
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Color indices for weed identification under various soil, residue, and lighting conditions. / Woebbecke, D. M.; Meyer, G. E.; Von Bargen, K.; Mortensen, D. A.

In: Transactions of the American Society of Agricultural Engineers, Vol. 38, No. 1, 01.01.1995, p. 259-269.

Research output: Contribution to journalArticle

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