专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP4386586A1 AUTHENTICATION OF PHYSICAL OBJECTS BASED ON RELIABLE PARTS OF COPY DETECTION PATTERNS 审中-公开
公开(公告)号：EP4386586A1
公开(公告)日：2024-06-19
申请号：EP22212904.1
申请日：2022-12-12
申请人： Université de Genève
发明人： Voloshynovskiy, Svyatoslav , Tutt, Joakim , Chaban, Roman , Taran, Olga , Holotyak, Taras
IPC分类号： G06F18/2135 , G06F18/22 , G06F18/2413 , G06F18/2433 , G06V10/22 , G06V10/24 , G06V10/28 , G06V10/44 , G06V10/50 , G06V10/74 , G06V10/764 , G06V10/82 , G06V10/98 , G06V20/80 , G06V20/00 , G03G21/04 , H04N1/00 , G06F18/211 , G06V10/771
CPC分类号： G06V20/80 , G06V20/95 , G06V10/22 , G06V10/245 , G06V10/28 , G06V10/443 , G06V10/50 , G06V10/82 , G06V10/761 , G06V10/764 , G06V10/993 , G06F18/2135 , G06F18/22 , G06F18/24133 , G06F18/2433 , G03G21/046 , H04N1/00846 , H04N1/00883 , G06F18/211 , G06V10/771
摘要： The present invention concerns a method for authentication of physical objects, by sampling and verifying of a probe image of a copy detection pattern (CDP) representing an object to be authenticated. The method comprises, at a training stage, the steps of
acquiring a set of reference templates tnn=1N,
acquiring a set of training images xnn=1N,
pre-processing of the training images, and, at an authentication stage,
acquiring a probe image y (70) of a copy detection pattern (CDP) representing an object to be authenticated,
performing pre-processing of the probe image, and
producing a decision about authenticity of the physical object.
The method further comprises, at said training stage, the steps of producing a set of estimates of reference templates,
determining a pattern reliability (60), and, at said authentication stage,
producing an estimate of probe reference template t̃ (80),
applying the determined pattern reliability (60), by use of a mask m reflecting said pattern reliability (60), for a weighted score computation (120, 121, 122),
the step of producing a decision about authenticity being based on at least a score s (125) produced by said weighted score computation (120, 121, 122).

2. 发明公开

EP4102399A1 OBJECT AUTHENTICATION USING DIGITAL BLUEPRINTS AND PHYSICAL FINGERPRINTS 审中-实审
公开(公告)号：EP4102399A1
公开(公告)日：2022-12-14
申请号：EP21182951.0
申请日：2021-06-30
申请人： Université de Genève
发明人： Voloshynovskiy, Svyatoslav , Taran, Olga , Tutt, Joakim , Holotyak, Taras
IPC分类号： G06K9/00 , G06K9/62
摘要： A method of object authentication based on digital blueprints and physical fingerprints comprising the steps of acquiring a set of training blueprints and fingerprints, training, object enrollment and object authentication. The method uses a pair of a mapper preferably realized as an encoder and a decoder and a set of multi-metric scores originating from the decomposition of mutual information and applied to both the output of the encoder and decoder and producing a feature vector for a one-class classifier. The method is trained only on the original physical objects and does not use any fakes for reliable authentication. The invention also concerns a method for generating synthetic fingerprints from given blueprints with controllable parameters of proximity to a manifold of original data that simulates the entire chain of production and acquisition as well as a method for training on these synthetically generated fingerprints. The method offers a solution how different synthetically generated fingerprints can be used to enhance the authentication performance under the variability of manufacturing at acquisition conditions while minimizing the probability of miss and allows to compensate the lack of priors about fakes while minimizing the probability of false acceptance. The invention is also directed to corresponding computer program means adapted to implement the proposed method, devices adapted for implementation of the proposed method, as well as applications which are particularly adapted for use of the proposed method.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式