By estimating the number of tubers within each pre-classified
size grades (small, medium, large and extra large grades); the system
offered 100% accuracy for providing such grades as shown in
the confusion matrix presented in Table 6 for the validation set
(162 regular tubers). The developed software is very friendly to
the user if the operator needs to change the grading thresholds
which are imperative requirements of the industry. Furthermore,
if a linear relationship could be established between potato sizes
and weights, it could be supplied to the algorithms to grade potatoes
based on their weight