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The Modified DTW Method for On-Line Automatic Signature Verification [chapter]

Dong Uk Cho, Young Lae J. Bae, Il Seok Ko
2005 Lecture Notes in Computer Science  
Most practical applications of this method in signature verification have been based on the practical implementational version proposed by Sakoe and Chiba [1], and is usually applied as a case of slope  ...  Dynamic Programming Matching (DPM) is a mathematical optimization technique for sequentially structured problems, which has, over the years, played a major role in providing primary algorithms in pattern  ...  for automatic signature verification [1] , [2] , [3] , [4] .  ... 
doi:10.1007/11577188_48 fatcat:oqhl64w73jbnngcyevzrqyhu7y

A Novel Signature Verification Based Automatic Teller Machine

Akash choubey
2012 International Journal of Information and Electronics Engineering  
The paper further presents a comparison of three extremely efficient methods CDTW (Continuous Dynamic Time Warping), DTW (Dynamic Time Wraping) and HMM (Hidden Markov Model) employed for signature verification  ...  Signature verification is an important domain for confirming a person's identity.  ...  DTW has been previously used for on-line signature verification. In this method, the user's signature is sampled at time interval with respect to the edge points and stored.  ... 
doi:10.7763/ijiee.2012.v2.163 fatcat:xx2qu5loxnfkrd2yndzawsm4h4

On-line Signature Verification Based on Modified Dynamic Time Warping and Wavelet Sub-band Coding [chapter]

Juan Carlos Sánchez-Diaz, Juan Manuel Ramírez-Cortes, Rogerio Enriquez-Caldera, Pilar Gomez-Gil
2010 Lecture Notes in Computer Science  
This paper presents an on-line signature biometric system based on a modified Dynamic Time Warping (DTW) algorithm applied to the signature wavelet coefficients.  ...  The modification on DTW relies on the use of direct matching points information (DMP) to dynamically adapt the similarity measure during the matching process, which is shown to increase the verification  ...  Offline signature verification takes as input the image of a signature and is useful in automatic verification of signatures found on bank checks and documents.  ... 
doi:10.1007/978-3-642-15992-3_23 fatcat:fysx3dqjwzb57pgnvbgsqhi3iu

Signature verification: A comprehensive study of the hidden signature method

Joanna Putz-Leszczyńska
2015 International Journal of Applied Mathematics and Computer Science  
An important group of these methods is based on dynamic time warping (DTW).  ...  Traditional use of DTW for signature verification consists in forming a misalignment score between the verified signature and a set of template signatures.  ...  Summary and conclusions There is a great demand for automatic signature verification systems on the commercial market.  ... 
doi:10.1515/amcs-2015-0048 fatcat:cpfyotcnure47jv5nomhkuptvu

On-line signature verification with two-stage statistical models

Liang Wan, Bin Wan, Lin Z-C
2005 Eighth International Conference on Document Analysis and Recognition (ICDAR'05)  
In this paper, we propose a new two-stage statistical system for automatic on-line signature verification.  ...  Our system is composed of a simplified GMM model for global signature features, and a discrete HMM model for local signature features.  ...  For on-line signature verification [4] , dynamic time warping (DTW) [10] [17] [6] [8] is one widely-used method to find the similarity between the input signature patterns and the stored templates.  ... 
doi:10.1109/icdar.2005.175 dblp:conf/icdar/WanW05 fatcat:o5x3mi5febdd3nol3ohc5mfvwy

Offline signature authenticity verification through unambiguously connected skeleton segments [article]

Jugurta Montalvão, Luiz Miranda, Jânio Canuto
2017 arXiv   pre-print
A method for offline signature verification is presented in this paper.  ...  method by [shanker2007], also based on DTW, and (3) the average human performance under equivalent experimental protocol.  ...  ACKNOWLEDGMENT This work was supported by grant from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) to J.M.  ... 
arXiv:1711.03082v1 fatcat:x232qfq5ararhmtl2zjvo576ym

DeepAirSig: End-to-End Deep Learning based In-Air Signature Verification

Jameel Malik, Ahmed Elhayek, Suparna Guha, Sheraz Ahmed, Amna Gillani, Didier Stricker
2020 IEEE Access  
We refer the reader to [19] - [23] for a detailed literature review on off-line and on-line signature verification.  ...  Verification in online methods has been performed using hidden markov model (HMM) [4] , SVM [5] , dynamic time warping (DTW) [6] , [7] and modified DTW [8] .  ... 
doi:10.1109/access.2020.3033848 fatcat:zk4malrqnfb5hachpdirkoi4uu

Offline Signature Authenticity Verification Through Unambiguously Connected Skeleton Segments

Jugurta Montalvão, Luiz Miranda, Jânio Canuto
2018 Journal of Communication and Information Systems  
A method for offline signature verification is presented in this paper.  ...  method also based on DTW, and (3) the average (nonspecialist) human performance based on Mean Opinion Scores (MOS) under equivalent experimental protocol.  ...  BASELINE METHOD Two methods for automatic offline signature verification are proposed in this paper.  ... 
doi:10.14209/jcis.2018.33 fatcat:cudgwawdureunkotyff35mea4a

Combining local, regional and global matchers for a template protected on-line signature verification system

Loris Nanni, Emanuele Maiorana, Alessandra Lumini, Patrizio Campisi
2010 Expert systems with applications  
In this work an on-line signature authentication system based on an ensemble of local, regional, and global matchers is presented.  ...  Specifically, the following matching approaches are taken into account: the fusion of two local methods employing Dynamic Time Warping, a Hidden Markov Model based approach where each signature is described  ...  Fierrez-Aguilar for the helpful discussions on on-line signature when he was a visiting researcher at the University of Bologna, Italy.  ... 
doi:10.1016/j.eswa.2009.10.023 fatcat:rlthbz2jsnafnotl5p36ryfjoy

Template selection for on-line signature verification

Ningning Liu, Yunhong Wang
2008 Pattern Recognition (ICPR), Proceedings of the International Conference on  
In this paper, we propose two effective methods to perform automatic template selection where the goal is to select prototype signature templates for a user from a given set of online signatures.  ...  In the experiment, two typical online signature verification have been employed, respectively based on global and local features, and the verifying results on a database Task2 of SVC2004 ( First Signature  ...  For on-line signature verification, it is obvious that the stability of the signatures associated with an individual is of influence on the verification accuracy.  ... 
doi:10.1109/icpr.2008.4761537 dblp:conf/icpr/LiuW08 fatcat:6dmrg4zukra2jc3eklrpgopv4u

Forensic Analysis of Offline Signatures Using Multilayer Perceptron and Random Forest

Abdul Salam Shah, Masood Shah, Muhammad Fayaz, Fazli Wahid, Hira Khalid Khan, Asadullah Shah
2017 International Journal of Database Theory and Application  
The process of forensic investigation for the verification of genuine signature and detection of forgery signatures in law related departments has been manual and the same can be automated using digital  ...  Research has been done to automate the forensic investigation process, but due to the internal variations of signatures, the automation of signature verification still remained a challenging problem for  ...  In the digital era, the automatic signature verification system will be very valuable in the field of Forensics. The signatures are mainly classified into two major groups i.e. On-line and Off-line.  ... 
doi:10.14257/ijdta.2017.10.1.13 fatcat:4onmwosg7rffvmspzqlixxbiru

Off-line Signature Verification Using Flexible Grid Features and Classifier Fusion

J. P. Swanepoel, J. Coetzer
2010 2010 12th International Conference on Frontiers in Handwriting Recognition  
On-line and off-line signatures The field of automatic signature verification may currently be divided into two distinct sub-categories, namely those systems concerned with on-line signature verification  ...  Automatic identification systems The process of manual signature verification is a laborious one.  ...  Appendix A Dynamic Time Warping: Key Concepts This appendix provides a detailed discussion on the DTW-algorithm, as used by the DTW base classifiers developed in this study.  ... 
doi:10.1109/icfhr.2010.52 dblp:conf/icfhr/SwanepoelC10 fatcat:747kntwfvjbrlcinghr3gacc3e

A Perspective Analysis of Handwritten Signature Technology

Moises Diaz, Miguel A. Ferrer, Donato Impedovo, Muhammad Imran Malik, Giuseppe Pirlo, Réjean Plamondon
2019 ACM Computing Surveys  
Over the last 40 years, the interest in signature studies has grown steadily, having as its main reference the application of automatic signature verification, as previously published reviews in 1989,  ...  Best practices in automatic signature verification are discussed in Section 3. In Section 4, a summary of the main competition results is reported by highlighting the state of the art in the field.  ...  These external comparisons give a more objective evaluation of the state of the art in automatic signature verification and define the goal for publishing results on new systems.  ... 
doi:10.1145/3274658 fatcat:au7cal7rkzeczd2dzrkzimu2wy

Online Signature Verification Using Fourier Descriptors

Berrin Yanikoglu, Alisher Kholmatov
2009 EURASIP Journal on Advances in Signal Processing  
We present a novel online signature verification system based on the Fast Fourier Transform.  ...  We report on the effectiveness of the proposed method, along with the effects of individual preprocessing and normalization steps, based on comprehensive tests over two public signature databases.  ...  Acknowledgments The authors would like to thank Professor Anil Jain for hosting B. Yankoglu during her sabbatical, Dr.Özgür Gürbüz for valuable help with the Fourier transform, and J.  ... 
doi:10.1155/2009/260516 fatcat:fdo6d4rtffcp5j6b4o3xapahzq

Handwritten Signature Verification Method based on Improved Combined Features

Yiwen Zhou, Jianbin Zheng, Huacheng Hu, Yizhen Wang
2021 Applied Sciences  
This paper proposes a handwritten signature verification method based on improved combined features.  ...  We extract the static and dynamic features of the signature and verify them with support vector machine (SVM) and dynamic time warping (DTW) respectively.  ...  For example, collecting signatures in different languages to compare the verification effect of the proposed method on different languages.  ... 
doi:10.3390/app11135867 fatcat:kugevrc7ojd3jb245v5d57af3u
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