Scientists are using artificial vision technology to detect rotten oranges, and sort citrus fruit by quality (Photo: IVIA)
There’s a reason that the oranges you see in the store usually aren’t rotten – someone at a sorting facility has already looked over all the oranges coming in from the fields, and taken out the spoiled ones. This is typically done with the help of ultraviolet light, which illuminates the essential oils in the rinds of rotten oranges. Such an approach is subject to human error, however, plus workers can only remain in the vicinity of the harmful UV light for limited periods of time. Now, scientists from Spain’s Valencian Institute of Agrarian Research (IVIA) have created a machine that does the same job automatically. While they were at it, they also came up with one that sorts oranges according to aesthetic appeal, and one that sorts mandarin segments.