公开(公告)号：EP1920597A2

公开(公告)日：2008-05-14

申请号：EP06813840.3

申请日：2006-08-28

申请人： Lumidigm, Inc.

发明人： ROWE, Robert, K. ,  CORCORAN, Stephen, P. ,  NIXON, Kristin, A. ,  DOUCET, Todd ,  MARTIN, Ryan

IPC分类号： H04N5/335

CPC分类号： H04N9/045 ,  A61B5/0077 ,  A61B5/443 ,  H04N5/335

摘要： Methods are described of evaluating the genuineness of a sample presented for biometric evaluation (figure 14). The sample is illuminated under distinct optical conditions (1404). Light scattered from the sample is received (1408). Multiple images are formed, each image being formed from the received light for one of the optical conditions. A set of texture measures is generated, each texture measure being generated from one of the images. It is determined whether the generated texture measures is consistent with the sample being authentic unconcealed biological tissue (1420).

公开(公告)号：EP2047622A2

公开(公告)日：2009-04-15

申请号：EP07873909.1

申请日：2007-07-30

申请人： Lumidigm, Inc.

发明人： SIDLAUSKAS, David, P. ,  NIXON, Kristin, A. ,  ROWE, Robert, K.

IPC分类号： H04K1/00

CPC分类号： G06K9/00114 ,  G06K9/00906

摘要： Methods and apparatus are provided of deriving a discrimination feature set for use in identifying biometric spoofs. True skin sites are illuminated under distinct optical conditions and light reflected from each of the true skin sites is received. True-skin feature values are derived to characterize the true skin sites. Biometric spoofs is similarly illuminated under the distinct optical conditions and light reflected from the spoofs is received. Spoof feature values are derived to characterize the biometric spoofs. The derived true-skin feature values are compared with the derived spoof feature values to select a subset of the features to define the discrimination feature set.

公开(公告)号：EP2041697A1

公开(公告)日：2009-04-01

申请号：EP07873944.8

申请日：2007-07-19

申请人： Lumidigm, Inc.

发明人： ROWE, Robert, K. ,  CORCORAN, Stephen, P. ,  NIXON, Kristin, A. ,  MARTIN, Ryan ,  DOUCET, Todd

IPC分类号： G06K9/00

CPC分类号： G06K9/0012 ,  A61B5/1172 ,  A61B5/726 ,  A61B5/7264 ,  G06K9/00067

摘要： Methods and systems are provided for performing a biometric function. A purported skin site of an individual is illuminated with illumination light. The purported skin site is in contact with a surface. Light scattered from the purported skin site is received in a plane that includes the surface. An image is formed from the received light. An image-texture measure is generated from the image. The generated image-texture measure is analyzed to perform the biometric function.

摘要翻译： 提供了用于执行生物测定功能的方法和系统。 用照明光照亮个人的声称的皮肤部位。 声称的皮肤部位与表面接触。 从声称的皮肤部位散射的光线被接收在包括该表面的平面中。 从接收到的光形成图像。 从图像生成图像纹理度量。 生成的图像纹理测量被分析以执行生物测量功能。

公开(公告)号：EP2041696A2

公开(公告)日：2009-04-01

申请号：EP07873303.7

申请日：2007-07-19

申请人： Lumidigm, Inc.

发明人： ULUDAG, Umut ,  ROWE, Robert, K. ,  NIXON, Kristin, A. ,  ENNIS, Matthew, S.

IPC分类号： G06K9/00

CPC分类号： G06K9/00375 ,  G06K9/00046 ,  G06K9/6293 ,  G06K2009/0006 ,  G06K2009/00932

摘要： A skin site of an individual is illuminated and light scattered from the skin site under multispectral conditions is received. The light includes light scattered from tissue beneath a surface of the skin site. Multiple biometric modalities are derived from the received light. The biometric modalities are fused into a combined biometric modality that is analyzed to perform a biometric function.