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).