Digital Image Processing
Dynamics features Extraction for on-Line Signature verification
CONIELECOMP '04 Proceedings of the 14th International Conference on Electronics, Communications and Computers
Gaussian Mixture Models for on-line signature verification
WBMA '03 Proceedings of the 2003 ACM SIGMM workshop on Biometrics methods and applications
Recent Advancements in Automatic Signature Verification
IWFHR '04 Proceedings of the Ninth International Workshop on Frontiers in Handwriting Recognition
Selection of Points for On-Line Signature Comparison
IWFHR '04 Proceedings of the Ninth International Workshop on Frontiers in Handwriting Recognition
On-Line Signature Verification by Exploiting Inter-Feature Dependencies
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 02
Online signature verification using temporal shift estimated by the phase of Gabor filter
IEEE Transactions on Signal Processing
Velocity-Image Model for Online Signature Verification
IEEE Transactions on Image Processing
Novel algorithm for the on-line signature verification
ICAISC'12 Proceedings of the 11th international conference on Artificial Intelligence and Soft Computing - Volume Part II
Decision fusion of horizontal and vertical trajectories for recognition of online Farsi subwords
Engineering Applications of Artificial Intelligence
On-line signature verification using vertical signature partitioning
Expert Systems with Applications: An International Journal
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In general, shape of an on-line signature is used as a single discriminating feature. Sometimes shape of signature is used alone for verification purposes and sometimes it is used in combination with some other dynamic features such as velocity, pressure and acceleration. The shape of an on-line signature is basically formed due to the wrist and fingers movements where the wrist movement is represented by the horizontal trajectory and the movement of the fingers is represented by vertical trajectory. As the on-line signature is formed due to the combination of two movements that are essentially independent of each other, it will be more effective to use them as two separate discriminating features. Based on this observation, we propose to use these trajectories in isolation by first decomposing the pressure and velocity profiles into two partitions and then extracting the underlying horizontal and vertical trajectories. So the overall process can be thought as the process which exploits the inter-feature dependencies by decomposing signature trajectories depending upon pressure and velocity information and performs verification on each partition separately. As a result, we are able to extract eight discriminating features and among them the most stable discriminating feature is used in verification process. Further Principal Component Analysis (PCA) has been proposed to make the signatures rotation invariant. Experimental results demonstrate superiority of our approach in on-line signature verification in comparison with other techniques.