An Efficient, Fast and Accurate Online Signature Verification Using Blended Feature Vector and Deep Learning

Abstract

Online signature verification is one of the biometric authentication techniques. Online signature verification reduces the human error that may occur due to physical signature verification. Many researchers have provided a method of online signature verification still there is a scope for improvement. In this paper, a novel blended feature vector (BFV) is formed by combining two feature vectors. The first of these feature vectors is formed using a raw online signature database and the other feature vector is formed of the features extracted from the grayscale images obtained from the signature database. The algorithm makes use of the probability distribution of the features to provide a feature vector that results in an enhanced verification system. Two online signature databases, namely SVC2004 and ATVS-SSig are used. BFV is used to train the proposed mixed sequence deep neural network (MS-DNN). The use of a blended feature vector in the training of MS-DNN, instead of a whole online signature database, improves the training time of deep neural network to a great extent. This reduction in training time might be useful for new user registration. The performance parameters considered are validation efficiency and equal error rate. Results are compared with the existing state of technology and the comparison shows that the use of a blended feature vector as a classification vector improves the validation efficiency (99.5%) and also there is an improvement in the verification success rate in terms of equal error rate (EER 1.5%) as compared to the existing research.

KEYWORDS:

• Deep learning
• Equal Error Rate (EER); feature extraction
• signature verification

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Manas Singhal

Manas Singhal received the ME degree in ECE from NITTTR, Panjab University, Chandigarh, India in 2016. He is currently pursuing a PhD. in ECE from AKTU, Lucknow, India. He is currently working in the Department of Electronics and Communication Engineering, MIT, Moradabad as an assistant professor. His area of interest is biometric authentication, digital image processing, and digital signal processing. He has authored more than 20 research papers in various Journals. He has got published 2 patents in the field of Engineering. Corresponding author. Email: [email protected]

Kshitij Shinghal

Kshitij Shinghal is currently working as a professor and head of department of ECE, MIT, Moradabad, India. His area of interest is neural network, VLSI, etc. He has Authored Various Papers in Various National and International Journals and Conferences. Email: [email protected]