The first dual use radio system for communication and radar operations based on photonics and exploiting a single dual-band slotted waveguide antenna array i...

• S. Melo
• S. Pinna
• F. Laghezza
• F. Scotti
• I. F. da Costa
• D. H. Spadoti
• Arismar Cerqueira S. Jr.
• A. Bogoni

• dual-band antenna
• dual-use system
• microwave photonics
• photonics-based radio transceiver

SBrT 2016

This paper investigates the inclusion of dynamic features in the input vectors used by the multiple classification scheme which employ the null space to co...

• Eduardo Esteves Vale
• Abraham Alcaim
• Rosângela Coelho

• Delta features
• delta-delta features
• multiple subband-classifiers
• speaker recognition

SBrT 2010

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...

• Fabiana O. P. Fernandes
• Willian G. de Almeida
• Flávia M. Freitas
• Abraham Alcaim

• shape encoding
• object-based image compression
• MPEG-4
• chain code
• grid cell

SBrT 2010

This paper presents an innovative approach that employs an ideal neighbourhood mask (INM) that has the ability to efficiently use Local Binary Pattern (LBP...

• Christian Arcos Gordillo
• Marley Vellasco
• Abraham Alcaim

• Enhancement
• mask
• Neighborhood
• TimeFrequency
• noise.

SBrT 2018

Este artigo compara o desempenho do reconhecimento de voz contínua – corrompida por ruído aditivo – utilizando três tipos de atributos: MFCC, SSCH e PNCC. ...

• Jan Krueger Siqueira
• Abraham Alcaim

• Reconhecimento Robusto de Voz Contínua
• ruído
• MFCC
• SSCH
• PNCC
• HTK
• TIMIT
• NOISEX-92.

SBrT 2011