Papers by Dr.Jyotika Chopra
An Efficient Watermarking for Protecting Signature Biometric Template
2018 5th International Conference on Signal Processing and Integrated Networks (SPIN), 2018
Digital watermarking is a process by which we can embed the message in security key as watermark ... more Digital watermarking is a process by which we can embed the message in security key as watermark to provide copyright protection to various text, image, audio and video documents. The Choice of optimal efficient watermarking technique is an challenging task. Many scientists have used large number of watermarks for the task which leads not only to poor performance of the algorithm but also to higher computational cost. In this paper, we propose an efficient watermarking technique which uses map based security key for offline signature which is used as an input signature biometric template. The watermark is introduced in the grayscale image by Exclusive–OR operation. The way avoids problematical computations because of its simplicity and non-fragility nature of the scheme. Experimental results show that the inserted watermark is perceptually invisible and robust to various geometric operations viz. rotation, scaling etc. and also to signal processing attacks like salt & pepper noise, speckle noise etc. The advantage of technique is that there is no reduction of image quality after watermark. Image quality constraints such as Peak Signal to Noise Ratio (PSNR), Bit Correct Ratio (BCR) are measured to validate the proposed method.
Identification and Verification of person on the basis of biometric features has become known in ... more Identification and Verification of person on the basis of biometric features has become known in our society. When the biometric systems are connected to a person’s body remarkably decreases the possibility of fraud. A biometric system basically is a pattern recognition system and to recognize the pattern or the image is not an easy task. From the various biometric techniques, recognisation done by fingerprint technique is best. Due to various qualities of fingerprint technique like easy to use, reliabilty, high stability, high acceptance in indentification and authentification, fingerprint technique is used mostly. The use of such technique ensures that the facilities provided are used by a authenticated user and no one else. Examples of such applications include secure access to buildings, computer systems, laptops, cellular phones, and ATMs. In security applications, biometrics are most often used to verify a person’s identity for the purpose of granting access to property or inf...
A biometric system essentially is a pattern recognition system that makes a personal identificati... more A biometric system essentially is a pattern recognition system that makes a personal identification on the basis of a specific physiological or behavioral characteristic possessed by the user. As biometric system provides us many advantages over traditional methods but still there are pros and cons of every developed system. There is main issue involved if the biometric key we are using if it will be stolen, then what will happen? So the system needs security , in this paper security techniques are discussed , from it is concluded that the watermarking technique will improve the system performance. Keywords— Watermarking, Biometric System, key,
Biometric system finds applications in crime prevention, banking, personnel identification etc. W... more Biometric system finds applications in crime prevention, banking, personnel identification etc. With advancement of electronics and information technology, sophisticated biometric systems have come to existence. However, there are still many issues and challenges which need to be addressed in this area. In this paper, we give the basic modules of biometric system, enumerate the various security aspects and the methodologies to tackle them. Specifically, the role of watermarking and its implications and selection of suitable watermarking technique for a given biometric system have been discussed. Comparative study of various watermarking methods has also been done. Keywords— Biometric system, Image Processing, Signal Enhancement, Security, Watermarking, Performance indices
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Papers by Dr.Jyotika Chopra