PURPOSE: To correspond with a large number of brands by speedily judging the brands by way of carrying out picture image processing about brand patterns marked on packages concerning the brands of the packages such as parcel packages, corrugated board box boxed goods and the like.
CONSTITUTION: A picture image picking up a brand pattern marked on a packaged 20 is converted to white and black binarized picture element information in accordance with picture image brightness. A ratio of the picture element number of a black part Q or a while part P of the picture element information and the total picture element number in a screen frame F is made total area ratio information. An ratio of picture element in a circle C with the black part Q of the pattern part as the center of gravity is made partial area ratio information. The number of the picture element forming the boundary of the black part Q and the white part P of the pattern part is made boundary picture information. In accordance with the total area ratio information, partial area ratio information and boundary picture element number information, fuzzy inference is carried out and a brand of the packaged goods 20 is judged.
MAEDA SHOICHIRO
YAZAKI MASAKAZU
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