An Ear Recognition Method Based on Rotation Invariant Transformed DCT

Human recognition systems have gained great importance recently in a wide range of applications like access, control, criminal investigation and border security. Ear is an emerging biometric which has rich and stable structure and can potentially be implemented reliably and cost efficiently. Thus human ear recognition has been researched widely and made greatly progress. High recognition rates which are reported in most existing methods can be reached only under closely controlled conditions. Actually a slight amount of rotation and translation which is inescapable would be injurious for system performance. In this paper, a method that uses a transformed type of DCT is implemented to extract meaningful features from ear images. This algorithm is quite robust to ear rotation, translation and illumination. The proposed method is experimented on two popular databases, i.e. USTB II and IIT Delhi II, which achieves significant improvement in the performance in comparison to other methods with good efficiency based on LBP, DSIFT and Gabor. Also because of considering only important coefficients, this method is faster compared to other methods

Human recognition based on ear biometric data

In the field of ear biometrics, despite recent developments, there are no freely available tools or databases captured in the wild that would ease the comparison of methods for ear biometric recognition. A new ear database captured in the wild was developed as a part of this thesis as well as a new toolbox for ear recognition. Rotation invariant local phase quantization method was also applied, for the first time in the field of ear biometrics, together with a fusion of this method with vectors of normalized images. Results are comparable but not better than the state-of-the-art, however, with the fusion we have achieved better results than the rotation invariant local phase quantization alone. The developed toolbox for ear recognition presents a new step towards standardization in the field of ear recognition and tests on the ear database have shown that the database presents greater challenge than the existing ones, but it is still comparable, which makes it suitable for further use

Análisis espacial y prognosis de la seguridad en entornos urbanos : comprensión de la trazabilidad de la conducta espacial y de su vínculo con las fuerzas motrices de la seguridad

Tesis de la Universidad Complutense de Madrid, Facultad de Geografía e Historia, Departamento de Geografía Humana, leída el 30-01-2018Currently, our societies demand a permanent and trustable security. The number and typologyof threats that they are facing on daily basis can lead to their eminent collapse. The ground of theabove-mentioned status quo is simple: a security applied en mass is based on a fallacies and myths.This mythical security puts on risk much more than an ordinary clash between theoretical securitymodels: the entire social peace system is questioned. Transversally to those threats is proposed thetraceability concept, frequently used in bioscience and biometric technologies, but not in commonuse for spatial analysis purposes. Within this unprecedented research founded in the field of thespatial analysis, we will analyze the main security driving forces existing in our societies - from amulti-scale perspective - with the aim to achieve a final social improvement.The doctoral thesis presented herein covers a comprehensive pursuit of the spatial conductbehaviour and its traceability. In this thesis, focused on urban areas, it will be analyzed how thecontemporary surveillance technologies work, evaluating whether those technologies and massprograms are covering the security demanded by the societies. Within the following chapters we willreview how modern security have intentionally designed and developed a smokescreen that istricking a true pragmatic security and which is creating an unprecedented security failure. Once thissmokescreen is revealed and questioned, the results are demonstrating minimal capabilities of itsapplication and profitability for traceability purposes. What we presented herein, is not exclusively ameta-theoretical analysis of a state of art...Actualmente, nuestras sociedades demandan un estado permanente y verificable de seguridad.Los riesgos y amenazas a los que nos enfrentamos a diario pueden constituir el punto deinflexión que derive a nuestras sociedades - tal y como las conocemos y comprendemos - hacia uncolapso inminente. Los motivos de dicho status quo son simples: la seguridad - como producto - aplicadaen masa se fundamenta en un arquetipo de falacias y mitos. A pesar de que objetivamente sonindiscutibles las capacidades de vigilia tecnológica actual, la ratio volumen- eficiencia es sumamentecuestionable. Consecuentemente, el producto resultante adquirido - la seguridad como garantía de lapaz y orden social - pone en riesgo mucho más que una mera confrontación entre planteamientosmeta-teóricos: el conjunto de paz y garantías sociales vigentes en nuestra sociedad está en riesgo.Transversalmente al conjunto de riesgos y amenazas presentes nos encontramos con elconcepto de la trazabilidad, frecuentemente usado en ciencias naturales y tecnologías vinculadas alanálisis biométrico, pero raramente asociado al análisis espacial. Durante la presente investigación,de la cual no existen precedentes en cuanto al tratamiento de la temática, nos centraremos en el análisisde las fuerzas motrices vinculadas a la seguridad – desde una perspectiva multiescalar – con elobjetivo de aportar un beneficio social...Depto. de GeografíaFac. de Geografía e HistoriaTRUEunpu