Process and plant for quality control inspection of bakery products

摘要

In accordance with the invention, the products to be inspected are made to travel past the field of vision of a matrix camera (4) which captures successive images when the products are lit alternately in direct lighting mode (32, 32) and in backlighting mode (33) through a translucent conveyor belt (35). With the help of the images obtained under backlighting, a contour inside which is defined a sample zone covering a surface of predetermined shape calculated so as to be intruded fully within the area of said contour is determined for each product. The contrasts discernible in surface analysis on the direct lighting image are then examined, for example to determined a density of blemishes.