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    • 6. 发明专利
    • Machine learning based imaging method of determining authenticity of a consumer good
    • GB2591178A
    • 2021-07-21
    • GB202018278
    • 2020-11-20
    • PROCTER & GAMBLE
    • JONATHAN RICHARD STONEHOUSEBOGUSLAW OBARA
    • G06K9/00G06K7/14G06K19/06
    • Method of determining counterfeit consumer products using a machine learning classification model, comprising: inputting an image of the consumer good into the model 11 and outputting a classification from the model indicating a likelihood that the consumer good is authentic or non-authentic 76. The model is trained with images from a plurality of different camera types thereby avoiding camera bias in the trained model. Images of authentic products comprise a visible steganographic feature (Fig. 2) and/or a manufacturing line variable printing (batch) code (Fig. 3). The steganographic features may comprise differing font styles and/or a change in location of a character or punctuation (25-37, Fig. 2A-H). The Manufacturing Line Variable Printing Code may comprise: alphanumeric characters, non-alphanumeric characters; pattern boxes; and/or dotted columns (41, 43, 45, Fig. 3 respectively). A product specification for an authentic item may comprise: production codes; batch codes; brand name; product line label; artwork, ingredient list; and/or usage instructions. The training dataset may be spatially manipulated, by geometric or colour distortion, before training the machine learning classifier (Fig. 7). The image of the consumer product to be authenticated may be spatially manipulated before classification.