Method for grading food products able to roll on their outer surface, such as certain fruits and vegetables

摘要

A method for grading substantially rigid food products able to roll on their outer surface, such as fruit and vegetables, comprises the operating steps of:
feeding each food product (1) and making it roll on its outer surface;
detecting the relative surface structure of the food product (1) at one or more of its surface portions (2);
repeating the detection step a plurality of times, for detecting at least once the relative surface structure of at least most of the surface of the food product (1);
combining the relative surface structures detected to reconstruct an overall surface structure of the food product (1); and
grading each food product (1) according to the overall surface structure detected.