Enhancing Biometric-Capsule-based Authentication and Facial Recognition via Deep Learning

In recent years, developers have used the proliferation of biometric sensors in smart devices, along with recent advances in deep learning, to implement an array of biometrics-based authentication systems. Though these systems demonstrate remarkable performance and have seen wide acceptance, they present unique and pressing security and privacy concerns. One proposed method which addresses these concerns is the elegant, fusion-based BioCapsule method. The BioCapsule method is provably secure, privacy-preserving, cancellable and flexible in its secure feature fusion design. In this work, we extend BioCapsule to face-based recognition. Moreover, we incorporate state-of-art deep learning techniques into a BioCapsule-based facial authentication system to further enhance secure recognition accuracy. We compare the performance of an underlying recognition system to the performance of the BioCapsule-embedded system in order to demonstrate the minimal effects of the BioCapsule scheme on underlying system performance. We also demonstrate that the BioCapsule scheme outperforms or performs as well as many other proposed secure biometric techniques

The ORL Active Floor

In this article a novel type of sensor system called the Active Floor is presented that allows the time varying spatial weight distribution of the active office environment to be captured. The properties of the Active Floor are described showing that it differs substantially from other commonly encountered sensor systems. Furthermore classification of the footstep signature of a number of individuals is attempted by application of the hidden Markov model technique. Introduction We are concerned in this paper with a weight sensitive floor, to be used as a means of sensing the distribution and time variation of loads within a building. Data obtained from such a floor can be fed into a distributed location system for the Active Office (1 ) . The Active Floor is a square grid of conventional carpet tiles, each backed by 18mm plywood and 3mm steel plate, supported at the corners by cylindrical load cells which are instrumented to give us the total vertical force. In the data acquisition ..

Groups definable in partial differential fields with an automorphism

In this paper we study groups definable in existentially closed partial differential fields of characteristic 0 with an automorphism which commutes with the derivations. In particular, we study Zariski dense definable subgroups of simple algebraic groups, and show an analogue of Phyllis Cassidy’s result for partial differential fields. We also show that these groups have a smallest definable subgroup of finite index.Universidad de Costa Rica/[821-C0-464]/UCR/Costa RicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigaciones en Matemáticas Puras y Aplicadas (CIMPA