The colour of the conveyor belts was chosen to enhance the
contrast between the belts and arils in order to make segmentation
of the images easier. Conveyor belts of different colours were
tested before being installed on the prototype. These preliminary
tests consisted in acquiring and segmenting images of arils and
internal membranes placed over pieces of white, blue, dark green,
light green and grey belts and then measuring the ratio of successful
classification (Blasco et al., 2008).