8. The method according to claim 1 , wherein assigning comprises: determining a weight for each of the plural predetermined material classifiers by using the list of potential best performing classifiers; and assigning a respective probability that the unknown material belongs to a material type based on the weights of the plural predetermined material classifiers.
8. The method according to claim 1 , wherein assigning comprises: determining a weight for each of the plural predetermined material classifiers by using the list of potential best performing classifiers; and assigning a respective probability that the unknown material belongs to a material type based on the weights of the plural predetermined material classifiers. 11. The method according to claim 8 , wherein assigning a respective probability that the unknown material belongs to a material type based on the weights of the plural predetermined material classifiers comprises calculating a weighted combination of the plural predetermined material classifiers using the weights.