EQUIPMENT AND METHOD FOR DETECTION OF PRESENCE OF AN EXISTENCE ON OR IN THE SURFACE OF AN ITEM CONVEYED BY A CONVEYOR

摘要

Equipment for detecting presence of an existence on or in the surface of an item conveyed by a conveyor (1), which equipment comprises an electronic camera (3) for taking a plurality of pictures of the item conveyed by the conveyor, and a lighting device (4), where the lighting device is adapted to during a first taking to illuminate the surface of the item with light of a first, predetermined colour, during a second taking illuminates the surface of the item with light of a second, predetermined colour, and during possible further takings illuminates the surface of the item with light of one or more further, predetermined colours, and that the equipment comprises a calculating unit for data processing at least two of the pictures taken of the item with illuminations of different colour, and to perform an examination of the achieved data for presence of an existence on or in the surface of the item.