Opto-Electronic determination of insect presence in fruit

摘要

Opto-electronic methods represent a potential to identify the presence of insect activities on or within agricultural commodities. Such measurements may detect actual insect presence or indirect secondary changes in the product resulting from past orpresent insect activities. Studies have progressed from preliminary multispectral and fluorescence imaging, to more detailed tissue spectral measurement, analysis and classification of infested and healthy whole and tissue samples of cherries and also the development and evaluation of a prototype sensor probe. Infested whole cherries were detected with complete spectra information with accuracy as high as 80-85%. A prototype dedicated probe utilizing two LED-based wavebands of incident light performed well but somewhat below the complete spectra accuracy. Additional analysis for optimal wavelengths demonstrated the potential to increase total classification to near 90%.