发明名称 |
Packaging film for product authentication, authentication method and system |
摘要 |
A packaging film which contains pigment particles randomly distributed in a low surface-area density is used for the authentication of products. An imaging device is used to record a first digital image of a packaged product. The positional coordinates, and optionally the color values, of the pigment particles contained in the packaging film are determined from the digital image by means of a computer program and an identification code is calculated from the coordinate or color values and stored in a database. To authenticate the product at a later time, a second digital image is recorded and a test code is determined and compared with the recorded identification code.
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申请公布号 |
US2011164748(A1) |
申请公布日期 |
2011.07.07 |
申请号 |
US20090997895 |
申请日期 |
2009.07.02 |
申请人 |
KOHLERT CHRISTIAN;SCHMIDT BERND;EGENOLF WALTER;ZISTJAKOVA TAMARA |
发明人 |
KOHLERT CHRISTIAN;SCHMIDT BERND;EGENOLF WALTER;ZISTJAKOVA TAMARA |
分类号 |
H04N1/44;B32B1/02;B32B5/16 |
主分类号 |
H04N1/44 |
代理机构 |
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代理人 |
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主权项 |
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