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Sociedade Brasileira de Telecomunicações


Providing Higher Entropy Cryptographic Keys by the Use of Biometrics

In this paper modifications are investigated to a previously introduced Key Regeneration system used to obtain cryptographic keys from biometric data, spec...

SBrT 2010


A Robust MERRY Channel Shortening Technique for OFDM Systems in PLC Environment Corrupted by Impulsive Noise

This contribution introduces a robust version of the multicarrier equalization by restoration of redundance (MERY) algorithm for data communication through...

SBrT 2010


Lossless Multi-Grid Chain Code with Optimized Cell Usage for Contour Description of Visual Objects

In the context of object-based image compression, shape encoders that describe the contour of the objects, called chain codes, tend to be more efficient th...

SBrT 2010


Modelling Power Consumption in IEEE 802.16e WiMAX Mobile Nodes

Energy availability is the main delimiter for usage time of mobile devices. As wireless network interfaces are usually the most power-demanding subsystem ...

SBrT 2010


Detection of Panoramic Takes in Soccer Videos Using Phase Correlation and Boosting

We propose an automatic engine for panoramic-take detection which relies on an algorithm based on phase correlation and boosting. The motion between two se...

SBrT 2010