Signture dynamic discrimination method
A dynamic and trajectory technology, applied in character and pattern recognition, input/output of user/computer interaction, instruments, etc., can solve problems such as difficult linear velocity identification, great difference in stroke strength, and difficulties
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[0031] Specific embodiment one
[0032] A scheme of dynamic authentication of signatures, figure 1 Shown is the signature trajectory in the space-time coordinate system x-y-t. The signature trajectory can be expressed as a function of the y-direction position and x-direction position of a pen point change with time t respectively x=f 1 (t) and y=f 2 (t), and the relationship between y and x can be established y=f(x, t). The space-time coordinate value of a point P on the signature track is P(x,y,t), and the space-time coordinate value of the initial pen point 0 is 0(x 0 , Y 0 , T 0 ). Taking the initial pen point 0 as the starting point and point P as the end point during the signing process, a set of space-time position vectors r(x-x 0 , Y-y 0 , T-t 0 ) To express the space-time location characteristics of each point on the signature track. The space-time position vector r(x-x 0 , Y-y 0 , T-t 0 The) group is compared with the space-time position vector group of each correspond...
Example Embodiment
[0033] Specific embodiment two
[0034] A scheme of dynamic authentication of signatures, figure 2 Shown is the signature trajectory in the space-time coordinate system x-y-t. The signature trajectory can be expressed as a function of the y-direction position and x-direction position of a pen point change with time t respectively x=f 1 (t) and y=f 2 (t), and the relationship y=f(x, t) can be established. The space-time coordinate value of a point P on the signature track is P(x,y,t), and the space-time coordinate value of the initial pen point 0 is 0(x 0 , Y 0 , T 0 ). Taking the initial pen point 0 as one end point, and the point P during the signing process as the other end point, the space-time distance between each point on a set of signature trajectory and the initial pen point d=((x-x 0 ) 2 +(y-y 0 ) 2 +(t-t 0 ) 2 ) 1 / 2 , To express the temporal and spatial location characteristics of each point on the signature track. The space-time distance of each point of the current ...
Example Embodiment
[0035] Specific embodiment three
[0036] A scheme of dynamic authentication of signatures, figure 2 Shown is the signature trajectory in the space-time coordinate system x-y-t. The signature trajectory can be expressed as a function of the y-direction position and x-direction position of a pen point changing with time t, respectively, x=f 1 (t) and y=f 2 (t), and the relationship y=f(x, t) can be established. The space-time coordinate value of a point P on the signature track is P(x,y,t), and the space-time coordinate value of the initial pen point 0 is 0(x 0 , Y 0 , T 0 ). Taking the initial pen point 0 as one end point, and the point P during the signing process as the other end point, the space-time distance between each point on a set of signature trajectory and the initial pen point d=((x-x 0 ) 2 +(y-y 0 ) 2 +(t-t 0 ) 2 ) 1 / 2 To express the spatial and temporal location characteristics of each point on the signature track. In the space-time coordinate system x-y-t, the pa...
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