COMPLEX AND COLORED OBJECT INSPECTION

This paper presents a technique for the recognition of objects which a re both complex and coloured. The transformation of the colour cluster is designed to obtain a colour set which makes it possible to use the colour cluster information for n-tuple classification. Generally, if two objects have different colour patterns, their colour clusters will be different. Therefore, the colour cluster is an important character istic for coloured object recognition. Further processing takes place, where some colour planes are sliced from the colour set, and every pl ane is sampled separately and applied to a classifier based on the n-t uple technique of pattern recognition. The colour cluster called 'pure colour information' is position invariant. Therefore, the system has one great advantage of position invariant inspection for coloured obje cts. The system interrogation time is always the same for whatever the complexity of the object, which is another advantage of the technique for the inspection of complex objects. Preliminary results using thes e techniques have shown promise in the classification and inspection o f various artefacts.