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In current society, the necessity of recognising people is increasing every day. Logical or physical access is restricted to authorised users, which in many cases have to provide tokens where their personal information is stored. At the same time, biometrics proposes a feasible solution for the recognition problem. The combination of both solutions is coming up front. However, up till now, owing to...
In this work, the authors explore different lossless strategies of organizing the sample point values from an on-line signature data format, in order to obtain higher compression performance. A new near-lossless strategy of organizing sample point values is also proposed, with the introduction of a control error difference level mechanism. Seven different data compression algorithms and three public...
Nowadays, the use of portable devices with touch screens has reached an extended use among the population. With this technology, it is possible to incorporate to such devices the possibility of using handwritten signature to authenticate the user. In order to study the possibilities to carry on this authentication, a previous analysis has been carried out in this paper to evaluate how an already implemented...
Nowadays, more biometric systems are used. These systems used for identification or verification purposes have shown a more secure solution than conventional identification systems; however the consequences of a successful attack in these systems are worst than in previous one. A successful attack can compromise personal data, such the biometric template, attempt against user's privacy and furthermore,...
This paper deals with the Signature Data Formats proposed by ISO 19794 project: 19794 part 7 Full Format and Compact Format (published in 2007) and the new 19794 part 11, which is under development. It will be shown how these formats handle the raw data coming from a Signature Input Device, and what the size of a Biometric Information Record is for each one. Another compression method, using LZ77...
This paper continue our previous work on combining dynamic time warping and Gaussian mixture modelling for automatic signature verification. MCyT signature database which contains data for 100 users, with 25 genuine and 25 forged signatures per users, has been used to test the proposed methods.
Handwriting signature is the most diffuse mean for personal identification. Lots of works have been carried out to get reasonable errors rates within automatic signature verification on-line. Most of the algorithms that have been used for matching work by features extraction. This paper deals with the analysis of discriminative powers of the features that can be extracted from an on-line signature,...
Many airports are employing Biometric Technology to check the user identity nowadays. Till nowadays, the use of Biometric in this situation is restricted to verification, i.e., the user at the same time he/she provides his/her Biometric data, provides also his/her identity. However, in some cases, it is needed to search among all users stored in the database for the identity of the user. For this...
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