公开(公告)号：GB2356961A

公开(公告)日：2001-06-06

申请号：GB0029202

申请日：2000-11-30

Applicant: IBM

Inventor： BOLLE RUDOLF MAARTEN ,  DORAI CHITRA ,  RATHA NALINI K

IPC: A61B5/117 ,  A61B5/11 ,  G06K9/00 ,  G06T7/00 ,  G07C9/00

Abstract: A resultant biometric is a combination of a traditional biometric and some controlled change to the traditional biometric. Resultant finger- or palm prints, for example, are consecutive print images where the subject exerts force, torque and/or rolling (controlled change) over an image acquisition interval of time. The physical way the subject distorts the images is the behavioural part of the resultant biometric, the finger or palm print is the physiological part of the resultant biometric. An undistorted print image in combination with an expression of the distortion trajectory which can be computed from the sequence of distorted print images, forms a more compact representation of the resultant fingerprint. A template representing the resultant print biometrics is derived from the traditional template representing the finger- or palm print plus a template representing the trajectory. Other traditional biometrics also lend themselves to temporal modification.