Copyright © IFAC Mathemalical and Conlrol Applications in Agriculture and Horticulture, Ihmnover, Gennany, 1997 THE QUALITY OF 'GOLDEN DELICJOUS ' APPLES UY COLOUR COMPUTER VISION

Abstract: A colour machine VISIon system was developed to form a basis for COIOUl ' grading and defect inspection of 'Golden Delicious ' apples. The criteria were based on European Union standards and took into account commerciai practices which add suhclasses to the basic categories. The system was able ta grade correctly more than 90 % of the apples for colour (94 % by using three colorimetrie p<-.rameters R,G,B or H,S,I and 91 % by using the single canonicaJ variate) and ensmed good nefect detection (russet, seah, fungi attack, etc.)